Official Paper

RRB ALP CBT-II (Electronic Mechanic) Official Paper (Held On: 02 May, 2025 Shift 1) (Previous Year Paper)

175 questions · 150 minutes · with answers · free

Attempt as Timed Mock Test

Part A (100 questions)

1

The resistivity of a conductor depends on which of the following factors?

  1. ((a))

    Area of ​​the conductor

  2. ((b))

    Mass of the conductor

  3. ((c))

    Nature of the conductor

  4. ((d))

    Diameter of conductor

Show Answer
Answer: ((a))

Area of ​​the conductor

2

Which of the following statements is correct regarding negative work done?

  1. ((a))

    The work done cannot be negative.

  2. ((b))

    When the force is perpendicular to the displacement, the work done is negative.

  3. ((c))

    When the force acts opposite to the direction of displacement, the work done is negative.

  4. ((d))

    When the force and displacement are in the same direction, the work done is negative.

Show Answer
Answer: ((a))

The work done cannot be negative.

3

In areas with hot climate, white colour of the exterior walls of the house is preferred because

  1. ((a))

    White color keeps the interior environment of the house cool by reflecting sunlight.

  2. ((b))

    White color makes the wall more durable.

  3. ((c))

    White color makes the house brighter by absorbing more sunlight.

  4. ((d))

    The white color looks good.

Show Answer
Answer: ((a))

White color keeps the interior environment of the house cool by reflecting sunlight.

4

The sum of Yash's and his father's ages is 90 years. When Yash's age equals his father's present age, he will be five times his son Suraj's present age. When Yash's age equals his father's present age, Suraj's age will be 12 years more than Yash's present age. Find Suraj's present age.

  1. ((a))

    15 years

  2. ((b))

    18 years

  3. ((c))

    12 years

  4. ((d))

    16 years

Show Answer
Answer: ((a))

15 years

5

What should come in place of question mark (?) in the given alphanumeric series?

G5, I10, L15, N20, Q25, S30, ?

  1. ((a))

    W35

  2. ((b))

    V35

  3. ((c))

    V40

  4. ((d))

    U35

Show Answer
Answer: ((a))

W35

6

Which of the following is a supplementary protocol that allows non-ASCII data to be sent via e-mail?

  1. ((a))

    HTTPS

  2. ((b))

    Multipurpose Internet Mail Extensions (MIME)

  3. ((c))

    DNS

  4. ((d))

    Mailing Lists

Show Answer
Answer: ((a))

HTTPS

7

Which of the following options best describes the primary function of digital signatures in electronic communications?

  1. ((a))

    It automatically stores all electronic documents for future reference.

  2. ((b))

    It encrypts the entire message content to ensure confidentiality.

  3. ((c))

    It verifies the identity of the sender and ensures the integrity of the message.

  4. ((d))

    This allows the recipient to edit the document before adding the signature.

Show Answer
Answer: ((a))

It automatically stores all electronic documents for future reference.

8

The areas of three adjacent faces of a solid cuboid are 216 cm², 114 cm² and 19 cm². Find the volume (in cm³) of the cuboid.

  1. ((a))

    684

  2. ((b))

    955

  3. ((c))

    532

  4. ((d))

    880

Show Answer
Answer: ((a))

684

9

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it seems to be at variance from commonly known facts, decide which of the given conclusions logically follows from the statements.

Statements:

Some bananas are litchis.

All litchis are kiwis.

Some kiwis are strawberries.

Conclusions:

  1. All bananas are kiwis is a possibility.
  2. All kiwis are litchis.
  1. ((a))

    Only conclusion 1 follows

  2. ((b))

    Only conclusion 2 follows

  3. ((c))

    Neither conclusion 1 nor 2 follows

  4. ((d))

    Both conclusions 1 and 2 follow

Show Answer
Answer: ((a))

Only conclusion 1 follows

10

Which of the following ecosystems has very low temperatures and frozen soil?

  1. ((a))

    Desert

  2. ((b))

    Tropical rainforest

  3. ((c))

    Pasture

  4. ((d))

    Tundra

Show Answer
Answer: ((a))

Desert

11

If A is an acute angle and p tan A = n sec A, then find the value of p2−n2pn\frac{p^2 - n^2}{pn}.

  1. ((a))

    cot A .cos A

  2. ((b))

    sin A .cos A

  3. ((c))

    tan⁡Asec⁡A\frac{\tan A}{\sec A}

  4. ((d))

     None of the above.

Show Answer
Answer: ((a))

cot A .cos A

12

A fruit vendor initially had a few apples. He sold 40% of them and still had 300 apples left. How many apples did he initially have?

  1. ((a))

    750

  2. ((b))

    450

  3. ((c))

    600

  4. ((d))

    500

Show Answer
Answer: ((a))

750

13

Megha bought a bag for ₹1,271 after getting an 18% discount on the marked price. Find the marked price of the bag.

  1. ((a))

    1,450

  2. ((b))

    1,650

  3. ((c))

    1,550

  4. ((d))

    1,350

Show Answer
Answer: ((a))

1,450

14

Which of the following methods is the safest method for disposal of toxic dust?

  1. ((a))

    Leaving it in the air for dilution.

  2. ((b))

    Sweeping it in open areas.

  3. ((c))

    Using special hazardous waste disposal containers.

  4. ((d))

    Putting it in regular trash cans.

Show Answer
Answer: ((a))

Leaving it in the air for dilution.

15

Vijay cycles 10 meters from home to tuition, then 5 meters to the shop. He returns home in the same way, covering the same distance. Find the total length of the path.

  1. ((a))

    20 m

  2. ((b))

    15 m

  3. ((c))

    Zero

  4. ((d))

    30 m

Show Answer
Answer: ((a))

20 m

16

A, B, C, D, E, and F live on six different floors of the same building. The ground floor is numbered 1, the floor immediately above it is numbered 2, and so on, until the topmost floor is numbered 6. D lives on an odd-numbered floor, but not 3. The sum of the floors on which D and E live is 7. A lives on the floor immediately below C. F lives on the topmost floor. How many people live between E and F?

  1. ((a))

    4

  2. ((b))

    1

  3. ((c))

    3

  4. ((d))

    2

Show Answer
Answer: ((a))

4

17

Which of the following noise levels is considered potentially harmful to human health when experienced over a long period of time?

  1. ((a))

    70 dB

  2. ((b))

    90 dB

  3. ((c))

    30 dB

  4. ((d))

    50 dB

Show Answer
Answer: ((a))

70 dB

18

Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair does not belong to that group? (Note: The odd letter-cluster pair is not based on the number of consonants/vowels or their position.)

  1. ((a))

     GN-PV

  2. ((b))

     JQ-SY

  3. ((c))

    HO-QW

  4. ((d))

    AH-JR

Show Answer
Answer: ((a))

 GN-PV

19

Which of the following relations is not correct?

  1. ((a))

    Electric power = (current)2 × resistance

  2. ((b))

    Electric power = voltage × current

  3. ((c))

    Electric power = voltage/current

  4. ((d))

    Electric power = (voltage)2 / resistance

Show Answer
Answer: ((a))

Electric power = (current)2 × resistance

20

In the following triplet, each group of letters is related to the next group following a certain logic. Select the option from the given ones that follows the same logic.

TERM-ERTM-TMRE

  1. ((a))

    WHEN-HWEN-WENH

  2. ((b))

    ZERO-EZRO-ZREO

  3. ((c))

    VICE-ICVE-VECI

  4. ((d))

    USER-RESU-REUS

Show Answer
Answer: ((a))

WHEN-HWEN-WENH

21

Which of the following options does not correctly represent the electric power P in a circuit (current, potential difference and resistance are symbolically written as I, V and R respectively.)

  1. ((a))

    P=V2RP = \frac{V^2}{R}

  2. ((b))

    P=I2RP = I^2 R

  3. ((c))

    P=VIP = VI

  4. ((d))

    P=IR2P = {IR^2}

Show Answer
Answer: ((a))

P=V2RP = \frac{V^2}{R}

22

In a certain code language, 'BARE' is coded as '8264' and 'RIDS' is coded as '3587'. What is the code for 'R' in the given code language?

  1. ((a))

    3

  2. ((b))

    8

  3. ((c))

    6

  4. ((d))

    5

Show Answer
Answer: ((a))

3

23

Kinetic energy and potential energy together are called which form of energy?

  1. ((a))

    Mechanical

  2. ((b))

    Chemical

  3. ((c))

    Ionic

  4. ((d))

    Nuclear

Show Answer
Answer: ((a))

Mechanical

24

If a circuit contains resistors of 10 Ω, 20 Ω and 60 Ω are connected in parallel, then find the total resistance of the circuit.

  1. ((a))

    90 Ω.

  2. ((b))

    60 Ω

  3. ((c))

    6 Ω

  4. ((d))

    20 Ω

Show Answer
Answer: ((a))

90 Ω.

25

What term is used to describe organisms in an ecosystem that produce their own food?

  1. ((a))

    Consumer

  2. ((b))

    Decomposer

  3. ((c))

    Vegetarian

  4. ((d))

    Producer

Show Answer
Answer: ((a))

Consumer

26

What should come in place of question mark (?) in the given series?

185 174 163 152 ? 130

  1. ((a))

    144

  2. ((b))

    142

  3. ((c))

    143

  4. ((d))

    141

Show Answer
Answer: ((a))

144

27

What is the primary source of energy for most ecosystems?

  1. ((a))

    Soil

  2. ((b))

    Wind

  3. ((c))

    Sunlight

  4. ((d))

    Water

Show Answer
Answer: ((a))

Soil

28

Potential energy falls under which of the following categories of energy?

  1. ((a))

    Thermal energy

  2. ((b))

    Light energy

  3. ((c))

    Chemical energy

  4. ((d))

    Mechanical energy

Show Answer
Answer: ((a))

Thermal energy

29

Two resistors of resistance 20 Ω and 30 Ω are connected in series in a circuit. If the supplied voltage is 250 V, find the current transmitted through the circuit.

  1. ((a))

    8 A

  2. ((b))

    12 A

  3. ((c))

    5 A

  4. ((d))

    20 A

Show Answer
Answer: ((a))

8 A

30

Study the given bar graph and answer the question below.

The given bar graph shows the number of flats sold by a builder in five different cities in the year 2020.

The number of flats sold in Delhi is what percent more than the number of flats sold in Mumbai?

  1. ((a))

    75%

  2. ((b))

    125%

  3. ((c))

    120%

  4. ((d))

    150%

Show Answer
Answer: ((a))

75%

31

Which of the following instruments is used to measure temperature?

  1. ((a))

    Hygrometer

  2. ((b))

    Voltmeter

  3. ((c))

    Thermometer

  4. ((d))

    Odometer

Show Answer
Answer: ((a))

Hygrometer

32

Use of energy efficient machinery in industrial settings mainly helps in ____________.

  1. ((a))

    increase energy consumption and consequently the cost of the product

  2. ((b))

    reducing industrial energy requirements and improve the competitiveness of products

  3. ((c))

    reducing operational efficiency

  4. ((d))

    extending the life of old equipment

Show Answer
Answer: ((a))

increase energy consumption and consequently the cost of the product

33

A dozen pairs of jeans costing ₹3,520 are available at a discount of 35%. How many pairs of jeans can be purchased for ₹572?

  1. ((a))

    2

  2. ((b))

    5

  3. ((c))

    1

  4. ((d))

    3

Show Answer
Answer: ((a))

2

34

Refer to the following letter and symbol series and answer the question that follows. Counting is to be done from left to right only. 

<br>

(Left) L R Ω Y A $ K ^ T J # Q & # E % S U * £ B (Right)

How many such symbols are there, each of which is immediately preceded by a vowel and also immediately followed by a letter?

  1. ((a))

    Two

  2. ((b))

    One

  3. ((c))

    Four

  4. ((d))

    Three

Show Answer
Answer: ((a))

Two

35

In the SI system, which of the following options best describes the fundamental quantities?

  1. ((a))

    Distance, Speed, Acceleration

  2. ((b))

    Temperature, pressure, volume

  3. ((c))

    Force, power, energy

  4. ((d))

    Length, mass, time

Show Answer
Answer: ((a))

Distance, Speed, Acceleration

36

An ammeter has 20 divisions between 0 and 2 A. The least count of an ammeter is _______________.

  1. ((a))

    0.2 A

  2. ((b))

    0.1 A

  3. ((c))

    1 A

  4. ((d))

    2 A

Show Answer
Answer: ((a))

0.2 A

37

If 'A' denotes '÷', 'B' denotes 'x', 'C' denotes '+' and 'D' denotes '-', then what will come in place of question mark (?) in the following equation?

38 C 32 A 4 D 5 B 7=?

  1. ((a))

    10

  2. ((b))

    8

  3. ((c))

    11

  4. ((d))

    9

Show Answer
Answer: ((a))

10

38

If x3+y3=16x^3 + y^3 = 16 and x + y = 4, then find the value of xy.

  1. ((a))

    4

  2. ((b))

    2

  3. ((c))

    3

  4. ((d))

    0

Show Answer
Answer: ((a))

4

39

What is the average human body temperature?

  1. ((a))

    40°C

  2. ((b))

    32°C

  3. ((c))

    42°C

  4. ((d))

    37°C

Show Answer
Answer: ((a))

40°C

40

Which of the following statements is true?

  1. ((a))

    In the kitchen, aluminium utensils are used because aluminium is a good conductor of heat.

  2. ((b))

    Both insulators and conductors allow heat to pass through them easily.

  3. ((c))

    Plastic is a good conductor of heat.

  4. ((d))

    Wood is a good conductor of heat.

Show Answer
Answer: ((a))

In the kitchen, aluminium utensils are used because aluminium is a good conductor of heat.

41

Refer to the following letter and symbol series and answer the question that follows. Counting is to be done from left to right only.

(Left) ^ T J # * £ B L R Ω Y # E % S U $ K Q & (Right)

How many such letters are there, each of which is immediately preceded by a letter and also immediately followed by a symbol?

  1. ((a))

    One

  2. ((b))

    Two

  3. ((c))

    Three

  4. ((d))

    Four

Show Answer
Answer: ((a))

One

42

According to the SI system of units, how many fundamental units are used to measure physical quantities?

  1. ((a))

    5

  2. ((b))

    10

  3. ((c))

    7

  4. ((d))

    4

Show Answer
Answer: ((a))

5

43

Eight people are sitting in two parallel rows containing 4 people in each row, in such a way that there is an equal distance between adjacent persons. Row 1 contains A, B, C and D, all of whom are facing south. Row 2 contains P, Q, R and S, all of whom are facing north. Thus, each person faces another person in the other row. Only two people sit between P and Q. A faces the person sitting to the immediate left of P. R sits to the immediate left of S. D sits to the immediate right of C. Who among the following faces P?

  1. ((a))

    D

  2. ((b))

    C

  3. ((c))

    B

  4. ((d))

    A

Show Answer
Answer: ((a))

D

44

Which of the following sequences of components primarily serves to execute instructions, store permanent firmware, temporarily store data during program execution, and provide a platform for interconnecting hardware components on a computer motherboard?

  1. ((a))

     RAM-ROM - CPU - PCB

  2. ((b))

     PCB-ROM-CPU-RAM

  3. ((c))

    CPU-RAM-ROM-PCB

  4. ((d))

    CPU-ROM-RAM- PCB

Show Answer
Answer: ((a))

 RAM-ROM - CPU - PCB

45

The area of ​​a regular polygon with side 12 cm is 144 cm². If the perpendicular distance from the center to the side of the polygon is 6 cm, find the number of sides of the polygon.

  1. ((a))

    5

  2. ((b))

    7

  3. ((c))

    6

  4. ((d))

    4

Show Answer
Answer: ((a))

5

46

A man purchased two varieties of pens at the rates of ₹8 for 9 pens and ₹8 per pen. If he purchased an equal number of pens of each of the two varieties and then sold all his pens at ₹6 per pen, what was his profit percentage?

  1. ((a))

    33%

  2. ((b))

    32%

  3. ((c))

    45%

  4. ((d))

    35%

Show Answer
Answer: ((a))

33%

47

Match the columns:

Engineering ApplicationsTypes of Engineering Drawings
A) Plans, facade elevations, and foundation drawings of houses to be constructed.P) Mechanical Engineering Drawings
B) Circuit Diagrams and Electrical Installation Drawings.Q) Electronics Engineering Drawings
C) PCB Track Drawings.R) Electrical Engineering Drawings
D) Riveted Joints and Welded Joints.S) Civil Engineering Drawings
  1. ((a))

     A-P: B-R; C-Q; D-S

  2. ((b))

     A-S; B-P; C-Q; D-R

  3. ((c))

    A-S; B-R; C-Q; D-P

  4. ((d))

    A-S; B-R; C-P; D-Q

Show Answer
Answer: ((a))

 A-P: B-R; C-Q; D-S

48

6 men or 5 women can complete a task in 7 days. 6 men work for 5 days and then leave. Find the number of women needed to complete the remaining task in 5 days.

  1. ((a))

    4

  2. ((b))

    2

  3. ((c))

    1

  4. ((d))

    3

Show Answer
Answer: ((a))

4

49

Which of the following statements are correct regarding the use of a fire extinguisher?

Statement 1: It is safe to attempt to extinguish any type of fire, regardless of the presence of toxic fumes.

Statement 2: The P.A.S.S. technique, which stands for Pull, Aim, Squeeze, and Sweep, is recommended for effective use of a fire extinguisher.

  1. ((a))

    Neither statement 1 nor 2 is correct.

  2. ((b))

    Only statement 1 is correct.

  3. ((c))

    Both statements 1 and 2 are correct.

  4. ((d))

    Only statement 2 is correct.

Show Answer
Answer: ((a))

Neither statement 1 nor 2 is correct.

50

Which of the following three-dimensional geometric figures has eight vertices and six rectangular faces?

  1. ((a))

    Pyramid

  2. ((b))

    Cylinder

  3. ((c))

    Parallelogram

  4. ((d))

    Cuboid

Show Answer
Answer: ((a))

Pyramid

51

In a hospital, the ratio between the number of doctors and the number of nurses was 1 : 3. The addition of 12 new doctors and the departure of 24 nurses brings the ratio to 3 : 4. After k more nurses resign from the hospital, the ratio becomes 1 : 1. Find the value of k.

  1. ((a))

    12

  2. ((b))

    28

  3. ((c))

    24

  4. ((d))

    26

Show Answer
Answer: ((a))

12

52

Which of the following statements is/are correct regarding functional dimension (F) in engineering drawings?

Statement 1: Functional dimensions are essential for the function of the component or space.

Statement 2: Functional dimensions are usually shown without any boundaries.

Statement 3: Functional dimensions are shown for reference purposes only.

  1. ((a))

    Only statement 1 is true

  2. ((b))

    Only statement 3 is true

  3. ((c))

    Only statements 2 and 3 are true

  4. ((d))

    Only statements 1 and 2 are true

Show Answer
Answer: ((a))

Only statement 1 is true

53

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance from commonly known facts, decide which of the given conclusions logically follows from the given statements.

Statements:

  1. Some desks are tables.

II. All tables are cabinets.

III. All cabinets are beds.

Conclusions:

I. Some beds are tables.

II. All cabinets are desks.

  1. ((a))

    Only conclusion I follows.

  2. ((b))

    Only conclusion II follows.

  3. ((c))

    Both conclusions I and II follow.

  4. ((d))

    Neither conclusion I nor conclusion II follows.

Show Answer
Answer: ((a))

Only conclusion I follows.

54

Ganpat starts from point A and walks 18 m west. He turns left, walks 32 m, then turns left again, walks 26 m, then turns left again, walks 61 m, and stops at point B. Meena starts from point Z, which is 22 m east of point A. She walks 42 m north, turns right, walks 35 m, turns right and walks 13 m, and stops at point Y. Find the shortest distance between point B and point Y. (All turns are 90-degree turns only.)

  1. ((a))

    52 m

  2. ((b))

    43 m

  3. ((c))

    57 m

  4. ((d))

    49 m

Show Answer
Answer: ((a))

52 m

55

Three circular plates of radii 3 m, 2 m, and 1 m are cut from a rectangular cardboard sheet 46 m long and 8 m wide. If the area of ​​the remaining cardboard sheet is equal to the area of ​​a square, find the length of each side of the square. (Use π=227\pi = \frac{22}{7})

  1. ((a))

    20 m

  2. ((b))

    18 m

  3. ((c))

    14 m

  4. ((d))

    16 m

Show Answer
Answer: ((a))

20 m

56

In a certain code language, 'CARD' is coded as '8674' and 'MICE' is coded as '3517'. What is the code for 'C' in the given code language?

  1. ((a))

    8

  2. ((b))

    7

  3. ((c))

    1

  4. ((d))

    6

Show Answer
Answer: ((a))

8

57

When an object of mass 50 kg is moved from one point to another along a horizontal line, what is the work done by the force of gravity on the object? (g=10m/s2)(g = 10 m / s ^ 2)

  1. ((a))

    Zero

  2. ((b))

    50 J

  3. ((c))

    500 J

  4. ((d))

    -500 J

Show Answer
Answer: ((a))

Zero

58

If 50 : x :: x : 32 and x > 0, then find the value of x.

  1. ((a))

    45.8

  2. ((b))

    40

  3. ((c))

    38.7

  4. ((d))

    40.6

Show Answer
Answer: ((a))

45.8

59

Two plumbers, X and Y, are paid a total of ₹770 per day by their employer. If X is paid 140% of the amount paid to Y, how much is Y paid per day (in ₹, rounded to two decimal places)?

  1. ((a))

    320.83

  2. ((b))

    220.83

  3. ((c))

    270.83

  4. ((d))

    370.83

Show Answer
Answer: ((a))

320.83

60

What will be the value of 10 km/hr in SI units?

  1. ((a))

    10 m/s

  2. ((b))

    0.16 m/s

  3. ((c))

    2.7 m/s

  4. ((d))

    1000 m/s

Show Answer
Answer: ((a))

10 m/s

61

In a certain code language,  

<br>

'A + B' means 'A is the mother of B',

'A - B' means 'A is the brother of B',

'A × B' means 'A is the wife of B' and

'A & B' means 'A is the father of B'.

<br>

If 'E & F + G - H x T', then how is E related to T?

  1. ((a))

    Wife's mother's father

  2. ((b))

    Wife's brother

  3. ((c))

    Wife's father

  4. ((d))

    Wife's mother's brother

Show Answer
Answer: ((a))

Wife's mother's father

62

If x = (7 + √5), y = (7 - √5), then find the value of x² + y².

  1. ((a))

    96

  2. ((b))

    137

  3. ((c))

    124

  4. ((d))

    108

Show Answer
Answer: ((a))

96

63

Convert 1 kilowatt hour (kWh) to joule.

  1. ((a))

    1 kWh=3.6×106 J{1\ \text{kWh} = 3.6 \times 10^6\ \text{J}}

  2. ((b))

    1 kWh=3.6×107 J1\ \text{kWh} = 3.6 \times 10^7\ \text{J}

  3. ((c))

    1 kWh=3.6×105 J1\ \text{kWh} = 3.6 \times 10^5\ \text{J}

  4. ((d))

    1 kWh=3.6×103 J1\ \text{kWh} = 3.6 \times 10^3\ {J}

Show Answer
Answer: ((a))

1 kWh=3.6×106 J{1\ \text{kWh} = 3.6 \times 10^6\ \text{J}}

64

Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pairs 4 to the left of :: is the same as the pattern and relationship followed between the letter-cluster pairs 4 to the right of ::?

: HDI :: MIN : %

  1. ((a))

    = JFI, % = KGL

  2. ((b))

     # = JFK, % = KGM

  3. ((c))

     # = JFK, % = KGL

  4. ((d))

    = JFK, % = KHL

Show Answer
Answer: ((a))

= JFI, % = KGL

65

What is the designation of the trimmed sheet with dimensions 297 mm x 420 mm, as per the ISO-A size series?

  1. ((a))

    A1

  2. ((b))

    A2

  3. ((c))

    A4

  4. ((d))

    A3

Show Answer
Answer: ((a))

A1

66

Which of the following expressions is not correct for electric power?

  1. ((a))

    P = VI

  2. ((b))

    P= V2/R

  3. ((c))

    P = I2/R

  4. ((d))

    P = I2R

Show Answer
Answer: ((a))

P = VI

67

What does the symbol given below in the circuit diagram represent?

  1. ((a))

    Voltmeter

  2. ((b))

    Voltage source

  3. ((c))

    Resistor

  4. ((d))

    Variable resistor

Show Answer
Answer: ((a))

Voltmeter

68

Preeti, Kiran, Grace, Ankit, Deepak, Nitin and Neelam each have an exam on a different day of the same week, starting from Monday and ending on Sunday. Preeti has an exam on Thursday. Only one person has an exam between Preeti and Nitin. Grace has an exam the day immediately before Nitin but not on Monday. Only two people have an exam between Grace and Deepak. Neelam has her exam before Ankit but after Kiran. Who among the following has an exam on Monday?

  1. ((a))

    Nitin

  2. ((b))

    Neelam 

  3. ((c))

    Kiran

  4. ((d))

    Deepak

Show Answer
Answer: ((a))

Nitin

69

If 59\frac{5}{9} of a number is 6 more than 12\frac{1}{2} of that number, then find that number.

  1. ((a))

    104

  2. ((b))

    108

  3. ((c))

    106

  4. ((d))

    102

Show Answer
Answer: ((a))

104

70

What should be done immediately after a fuel spillage in a workshop?

  1. ((a))

    Cover it with plastic to prevent evaporation.

  2. ((b))

    Use water to wash it off

  3. ((c))

    Leave it as is and inform the supervisor later

  4. ((d))

    Empty the area and control overflow using absorbent materials

Show Answer
Answer: ((a))

Cover it with plastic to prevent evaporation.

71

A cube of mass 5.74 g occupies a volume of 1.2 cm³. The density (in g/cm³) expressed with the correct number of significant figures is _____________.

  1. ((a))

    4.7833

  2. ((b))

    4.8

  3. ((c))

    4.78

  4. ((d))

    4.783

Show Answer
Answer: ((a))

4.7833

72

In science, work done is defined as:

  1. ((a))

    force / distance

  2. ((b))

    force / displacement

  3. ((c))

    force × displacement

  4. ((d))

    force × distance

Show Answer
Answer: ((a))

force / distance

73

Simplify 976 × 265 + 976 × 735.

  1. ((a))

    752800

  2. ((b))

    976000

  3. ((c))

    658200

  4. ((d))

    876000

Show Answer
Answer: ((a))

752800

74

Which of the following is not an advantage of using mobile governance using ICT?

  1. ((a))

    Reduced costs for the government

  2. ((b))

    Better access to government services for citizens

  3. ((c))

    Increased transparency and accountability in government

  4. ((d))

    Increasing the efficiency of government processes

Show Answer
Answer: ((a))

Reduced costs for the government

75

Study the given diagram carefully and answer the question given below. The numbers in different sections represent the number of children who like different desserts.

<br> <br>

How many children like both pastries and ice cream but not chocolate?

  1. ((a))

    9

  2. ((b))

    6

  3. ((c))

    7

  4. ((d))

    8

Show Answer
Answer: ((a))

9

76

The rate of doing work is known as ___________.

  1. ((a))

    Power

  2. ((b))

    Force

  3. ((c))

    Kinetic energy

  4. ((d))

    Potential energy

Show Answer
Answer: ((a))

Power

77

Which of the following actions help prevent injuries from slips and falls?

  1. ((a))

    Wearing loose shoes for comfort

  2. ((b))

    Walk carefully on wet floors

  3. ((c))

    Cleaning up spills immediately and using warning signs

  4. ((d))

    Ignoring clutter on the sidewalk

Show Answer
Answer: ((a))

Wearing loose shoes for comfort

78

In the following series, only one letter-cluster is wrong. Choose the wrong letter-cluster.

PCO MEM JGK GIJ DKG AME

  1. ((a))

    AME

  2. ((b))

    JGK

  3. ((c))

    DKG

  4. ((d))

    GIJ

Show Answer
Answer: ((a))

AME

79

Which of the following statements about geometric shapes is/are true?

  1. Geometric shapes are enclosed figures formed by joining two or more points, lines, or curves.
  2. Geometric shapes are always open-ended and made up of only straight lines.
  1. ((a))

    Only statement 1 is true

  2. ((b))

    Only statement 2 is true

  3. ((c))

    Both statements 1 and 2 are true

  4. ((d))

    Neither statement 1 nor 2 is true

Show Answer
Answer: ((a))

Only statement 1 is true

80

A tank has two inlets, I1 and I2. I1 alone can fill it in 8 hours, and I2 alone can fill it in 4 hours. If both inlets are open, how long will it take to fill the tank?

  1. ((a))

    2 hours

  2. ((b))

    2232\frac{2}{3} hours

  3. ((c))

    3233\frac{2}{3} hours

  4. ((d))

    4234\frac{2}{3} hours

Show Answer
Answer: ((a))

2 hours

81

A 280 m long train travelling at a speed of 72 km/hr crosses a platform in 30 seconds. Find the length (in m) of the platform.

  1. ((a))

    335

  2. ((b))

    280

  3. ((c))

    300

  4. ((d))

    320

Show Answer
Answer: ((a))

335

82

Amit's income in 2019 was ₹27,000. His income increases by 10% each year. What was his income (in ₹) in 2021?

  1. ((a))

    32,400

  2. ((b))

    29,700

  3. ((c))

    32,670

  4. ((d))

    27,000

Show Answer
Answer: ((a))

32,400

83

Which of the following is the best way to identify hazards at the workplace?

  1. ((a))

    Waiting for an event to occur

  2. ((b))

    Performing regular safety inspections

  3. ((c))

    Relying on employees to report accidents

  4. ((d))

    Ignoring small risks

Show Answer
Answer: ((a))

Waiting for an event to occur

84

Given below are two sets of numbers. In each set, performing certain mathematical operations on the first number gives the second number. Similarly, performing certain mathematical operations on the second number gives the third number, and so on. Which of the given options follows the same set of operations as the given sets?

<br>

(Note: Operations must be performed on whole numbers without breaking the numbers into their component digits. For example, take 13. Operations such as addition, subtraction, multiplication, etc. can be performed on 13. Breaking 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not permitted.)

<br>

3-9-12-24; 4-16-20-40

  1. ((a))

    9-2-11-24

  2. ((b))

    1-1-2-4

  3. ((c))

    6-12-18-34

  4. ((d))

    7-49-56-122

Show Answer
Answer: ((a))

9-2-11-24

85

Which of the following will verify the credentials and documents of applicants uploaded on the National Scholarship Portal?

  1. ((a))

    National Scholarship Portal

  2. ((b))

    The University/Institute in which the applicant is studying.

  3. ((c))

    Third Party

  4. ((d))

    Government

Show Answer
Answer: ((a))

National Scholarship Portal

86

The average of three numbers is 20. If two numbers are 16 and 24, find the third number.

  1. ((a))

    22

  2. ((b))

    21

  3. ((c))

    20

  4. ((d))

    19

Show Answer
Answer: ((a))

22

87

Which of the following statements is/are true?

Statement 1: Heat conductors allow heat to pass through them easily.

Statement 2: All plastics are good conductors of heat.

  1. ((a))

    Only statement 1

  2. ((b))

    Only statement 2

  3. ((c))

    Neither statement 1 nor statement 2

  4. ((d))

    Both statement 1 and statement 2

Show Answer
Answer: ((a))

Only statement 1

88

In the following number-pairs, the second number is obtained by performing certain mathematical operations on the first number. What number should be replaced by X and Y so that the pattern followed by the two numbers to the left of :: is the same as the pattern followed by the two numbers to the right of ::?

(Note: Operations must be performed on whole numbers, without breaking the numbers into their component digits. For example, take 13. Operations such as addition/subtraction/multiplication can be performed on 13. Breaking 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not permitted.)

X: 85 :: 36: Y

  1. ((a))

    x = 44, Y = 73

  2. ((b))

     x = 42, Y = 73

  3. ((c))

     x = 43, Y = 77

  4. ((d))

     x = 42, Y = 71

Show Answer
Answer: ((a))

x = 44, Y = 73

89

Jaspreet deposited ₹58,550 at 20% annual interest rate compounded annually. What is the total amount (in ₹) Jaspreet will receive after 2 years ?

  1. ((a))

    84,700

  2. ((b))

    84,312

  3. ((c))

    84,735

  4. ((d))

    83,876

Show Answer
Answer: ((a))

84,700

90

Rinku travels 136 meters in his car in 17 seconds. Find his speed (in km/hr).

  1. ((a))

    11.6

  2. ((b))

    17

  3. ((c))

    28.8

  4. ((d))

    26

Show Answer
Answer: ((a))

11.6

91

What should come in place of question mark (?) in the given series?

893 891 889 887 ? 883

  1. ((a))

    986

  2. ((b))

    885

  3. ((c))

    985

  4. ((d))

    886

Show Answer
Answer: ((a))

986

92

Ten people are sitting in two parallel rows, five in each row, in such a way that there is an equal distance between adjacent persons.

Row I contains A, B, C, D, and E, all of whom are facing south. Row II contains R, S, T, U and V, all of whom are facing north. Thus, each person faces a person from the other row. A sits at the right end of his row and faces U. R sits in the middle of his row and faces C. E sits between C and D, facing T. S sits at the right end of his row.

Who sits exactly opposite B?

  1. ((a))

    T

  2. ((b))

    R

  3. ((c))

    U

  4. ((d))

    V

Show Answer
Answer: ((a))

T

93

What type of thermometer is used to measure the internal temperature of ice?

  1. ((a))

    Digital thermometer

  2. ((b))

    Clinical thermometer

  3. ((c))

    Infrared thermometer

  4. ((d))

    Laboratory Thermometer

Show Answer
Answer: ((a))

Digital thermometer

94

An ammeter with a range of 0 to 10 A reads a current of 7.5 A. If its actual value is 6.2 A, the relative error is ________.

  1. ((a))

    13%

  2. ((b))

    17.33%

  3. ((c))

    20.96%

  4. ((d))

    4.8%

Show Answer
Answer: ((a))

13%

95

The average of 5 results is 51 and the average of the first 4 of them is 50. The 5th result is.

  1. ((a))

    55

  2. ((b))

    50

  3. ((c))

    51

  4. ((d))

    54

Show Answer
Answer: ((a))

55

96

A copper spoon is dipped in hot water. What happens to the other end?

  1. ((a))

    It gets heated by conduction.

  2. ((b))

    It cools down by conduction.

  3. ((c))

    It gets heated by convection.

  4. ((d))

    It cools down by convection.

Show Answer
Answer: ((a))

It gets heated by conduction.

97

Based on the English alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which of the given letter-clusters does not belong to that group? (Note: The odd letter-cluster is not based on the number of consonants/vowels or their position in the letter-cluster.)

  1. ((a))

    GMOT

  2. ((b))

    FLNS

  3. ((c))

    NTVB

  4. ((d))

    LRTY

Show Answer
Answer: ((a))

GMOT

98

A rod of length 89\frac{8}{9} meters breaks into two pieces. If one piece is 13\frac{1}{3} meters long, find the length (in m) of the other piece.

  1. ((a))

    29\frac{2}{9}

  2. ((b))

    79\frac{7}{9}

  3. ((c))

    59\frac{5}{9}

  4. ((d))

    49\frac{4}{9}

Show Answer
Answer: ((a))

29\frac{2}{9}

99

Four 4-ohm resistors are connected in parallel. These four parallel resistors are then connected in series with a 9-ohm resistor. Find the equivalent resistance.

  1. ((a))

    10 ohm 

  2. ((b))

    2 ohm 

  3. ((c))

    3 ohm 

  4. ((d))

    1  ओम

Show Answer
Answer: ((a))

10 ohm 

100

An object weighs 60 N on Earth. What will be its weight on the surface of the Moon?

  1. ((a))

    600 N

  2. ((b))

    10 N

  3. ((c))

    6 N

  4. ((d))

    60 N

Show Answer
Answer: ((a))

600 N

Part B (75 questions)

101

Minimum gate required to implement XOR gate using NOR gate only are:

  1. ((a))

    4

  2. ((b))

    2

  3. ((c))

    5

  4. ((d))

    3

Show Answer
Answer: ((a))

4

102

Why is it important for every person to follow safety procedures in the workplace?

  1. ((a))

    To reduce operational costs significantly

  2. ((b))

    To minimise risks and avoid accidents

  3. ((c))

    To limit the need for frequent supervision

  4. ((d))

     To increase overall production efficiency 

Show Answer
Answer: ((a))

To reduce operational costs significantly

103

What is the role of the LC oscillator in an inductive proximity switch?

  1. ((a))

     It detects light intensity. 

  2. ((b))

    It measures temperature changes. 

  3. ((c))

     It generates a high-frequency electromagnetic field.

  4. ((d))

    It converts AC voltage to DC voltage.

Show Answer
Answer: ((a))

 It detects light intensity. 

104

A circular hole of radius 3 cm is cut from a rectangular sheet of dimensions 12 cm × 10 cm. Find the remaining area.

(Take π = 3.14)

  1. ((a))

    95.86 cm²

  2. ((b))

    75.74 cm²

  3. ((c))

    100 cm²

  4. ((d))

    91.74 cm² 

Show Answer
Answer: ((a))

95.86 cm²

105

What is the Boolean expression for the carry-out (Cout) output of a Full Adder?

  1. ((a))

     Cout=(A⋅B)⊕Cin

  2. ((b))

     Cout=A⊕B⊕Cin

  3. ((c))

    Cout=(A⋅B)+(B⋅Cin)+(Cin⋅A)

  4. ((d))

    Cout=(A⋅B)⋅Cin

Show Answer
Answer: ((a))

 Cout=(A⋅B)⊕Cin

106

Which type of light source is commonly used in photoelectric switches?

  1. ((a))

    Fluorescent lamp

  2. ((b))

    Infrared LED

  3. ((c))

    Halogen lamp

  4. ((d))

    Incandescent bulb

Show Answer
Answer: ((a))

Fluorescent lamp

107

Which of the following hand-operated drilling machines is used for drilling small diameter holes up to 6 mm?

  1. ((a))

    Ratchet drilling machine

  2. ((b))

    Bevel gear type drilling machine

  3. ((c))

    Electric hand drill

  4. ((d))

    Breast drilling machine

Show Answer
Answer: ((a))

Ratchet drilling machine

108

While using a pulse code modulator circuit, the output of the quantizer is fed to the _____.

  1. ((a))

    mixer

  2. ((b))

    multiplexer

  3. ((c))

    encoder

  4. ((d))

    decoder

Show Answer
Answer: ((a))

mixer

109

A/an _____ is connected in series with the voltmeter to increase the range of the voltmeter.

  1. ((a))

    inductor

  2. ((b))

     resistor

  3. ((c))

    capacitor

  4. ((d))

    inductor and capacitor in series

Show Answer
Answer: ((a))

inductor

110

Which of the following is a switching error in electrical measuring instruments?

  1. ((a))

    Wrong connection of the meter

  2. ((b))

    Error due to wrong calculation of subdivisions

  3. ((c))

    Error due to heat

  4. ((d))

    Error due to vibration

Show Answer
Answer: ((a))

Wrong connection of the meter

111

What is the purpose of an emergency evacuation plan?

  1. ((a))

    To ensure safe and orderly evacuation during emergencies

  2. ((b))

    To allow workers to leave early

  3. ((c))

    To avoid safety drills

  4. ((d))

    To increase productivity

Show Answer
Answer: ((a))

To ensure safe and orderly evacuation during emergencies

112

Which of the following Boolean expressions represents the behaviour of a 3-input OR gate?

  1. ((a))

    A * B * C

  2. ((b))

    (A * B) + C

  3. ((c))

    A + B + C

  4. ((d))

    (A + B) * C

Show Answer
Answer: ((a))

A * B * C

113

For what purpose are pins and clips used in engineering drawings?

  1. ((a))

    To support the drawing paper/tracing paper for making drawings

  2. ((b))

    To fasten the drawing sheet on to the drawing board firmly so that it does not shake

  3. ((c))

    To transfer dimensions and dividing lines into a number of equal parts

  4. ((d))

    To draw horizontal lines, parallel lines and to guide/hold the set squares

Show Answer
Answer: ((a))

To support the drawing paper/tracing paper for making drawings

114

What is the condition for a transistor to operate in the saturation region?

  1. ((a))

    The base-emitter junction is forward-biased and the collector-emitter junction is reverse-biased.

  2. ((b))

    The base-emitter junction is reverse-biased.

  3. ((c))

    The base-emitter junction is reverse-biased and the collector-emitter junction is forward-biased.

  4. ((d))

    The base-emitter junction is forward-biased and the collector-emitter junction is also forward-biased.

Show Answer
Answer: ((a))

The base-emitter junction is forward-biased and the collector-emitter junction is reverse-biased.

115

The 8051 microcontroller supports the bit-addressable memory feature that is located at the memory locations _____.

  1. ((a))

    RAM addresses 0x30 to 0x7F

  2. ((b))

    RAM addresses 0x20 to 0x2F

  3. ((c))

    RAM addresses 0x0 to 0x1F

  4. ((d))

    RAM addresses 0x80 to 0xFF

Show Answer
Answer: ((a))

RAM addresses 0x30 to 0x7F

116

What is the primary reason for electrical injuries when a person comes in contact with electrical equipment? 

  1. ((a))

    Devices are used for too long

  2. ((b))

    Electrical equipment is not properly grounded.

  3. ((c))

    Current flows through the body causing harm. 

  4. ((d))

     Electrical devices are too powerful.

Show Answer
Answer: ((a))

Devices are used for too long

117

A circuit consists of three resistors; 15 ohms, 10 ohms, and 20 ohms. The 15-ohm resistor is in series with the parallel combination of the 10-ohm and 20-ohm resistors. If a 24 V battery is applied across the circuit, what is the total current flowing through the circuit?

  1. ((a))

    0.1 A

  2. ((b))

    3.1 A 

  3. ((c))

    2.1 A 

  4. ((d))

    1.1 A

Show Answer
Answer: ((a))

0.1 A

118

What is the primary advantage of the bit-addressable area in the 8051's internal RAM?

  1. ((a))

     It allows bit-level access to data memory, providing precise control for applications like I/O operations.

  2. ((b))

    It is used for storing large amounts of data in a compressed format

  3. ((c))

    It reduces the power consumption by allowing individual bits to be turned off.

  4. ((d))

    It increases the overall size of the internal RAM. 

Show Answer
Answer: ((a))

 It allows bit-level access to data memory, providing precise control for applications like I/O operations.

119

Gaskets, seals and spacers are made using:

  1. ((a))

     pin punch

  2. ((b))

    centre punch

  3. ((c))

    hollow punch

  4. ((d))

     prick punch 

Show Answer
Answer: ((a))

 pin punch

120

Which of the following types of pliers is used to shape loops in wires and to form curves in light metal strips?

  1. ((a))

    Flat nose pliers

  2. ((b))

    Round nose pliers

  3. ((c))

    Slip-joint pliers

  4. ((d))

    End cutting pliers

Show Answer
Answer: ((a))

Flat nose pliers

121

How are flip flops used in digital counters?

  1. ((a))

    Flip-flops convert analogue input signals to a digital count. 

  2. ((b))

     Flip-flops store the count value in binary form and change state with each clock pulse. 

  3. ((c))

    Flip-flops generate a clock signal for the counter. 

  4. ((d))

    Flip-flops perform addition operations for the counter. 

Show Answer
Answer: ((a))

Flip-flops convert analogue input signals to a digital count. 

122

In a lead-acid battery, what is the chemical composition of the material used for the positive plate during discharge?

  1. ((a))

     Lead dioxide (PbO₂)

  2. ((b))

    Sulphuric acid (H₂SO₄)

  3. ((c))

     Lead sulfate (PbSO₄)

  4. ((d))

     Lead (Pb)

Show Answer
Answer: ((a))

 Lead dioxide (PbO₂)

123

Why is a high-impedance input preferred in a frequency meter?

  1. ((a))

    To reduce display brightness fluctuations

  2. ((b))

    To increase the power consumption of the meter 

  3. ((c))

    To prevent voltage drop across the circuit being measured

  4. ((d))

    To allow better voltage regulation

Show Answer
Answer: ((a))

To reduce display brightness fluctuations

124

The unit for specific gravity is _____. 

  1. ((a))

    kg/m3

  2. ((b))

    g/cm3

  3. ((c))

    m/s2

  4. ((d))

    no unit (dimensionless)

Show Answer
Answer: ((a))

kg/m3

125

Which type of circuit is used to amplify low-level signals, such as those from sensors or microphones, to a level that is sufficient to drive a load?

  1. ((a))

    Power amplifier

  2. ((b))

    Voltage amplifier

  3. ((c))

    Current amplifier

  4. ((d))

     Operations-based Schmitt trigger

Show Answer
Answer: ((a))

Power amplifier

126

In an ideal op-amp, what would happen if there were no feedback in the circuit?

  1. ((a))

    The output would saturate to supply limits. 

  2. ((b))

    The output would be unpredictable. 

  3. ((c))

    The gain would become unity. 

  4. ((d))

    The output would remain at zero.

Show Answer
Answer: ((a))

The output would saturate to supply limits. 

127

What type of oscillator uses a capacitive voltage divider as the feedback network?

  1. ((a))

    Colpitts oscillator

  2. ((b))

    Hartley oscillator 

  3. ((c))

    Crystal oscillator

  4. ((d))

    RC oscillator

Show Answer
Answer: ((a))

Colpitts oscillator

128

Non-functional dimensions are _______________.

  1. ((a))

    not essential for the function of the space or component

  2. ((b))

    derived from the values of the related features of a drawing

  3. ((c))

    directly derived from the values given on a drawing

  4. ((d))

     essential for the function of the space or component

Show Answer
Answer: ((a))

not essential for the function of the space or component

129

When using a multimeter to measure current, which of the following is correct?

  1. ((a))

    The multimeter is connected only across resistive components.

  2. ((b))

    The multimeter is connected in parallel with the load. 

  3. ((c))

    The multimeter is connected in series with the load.

  4. ((d))

    The multimeter is connected directly to the power source.

Show Answer
Answer: ((a))

The multimeter is connected only across resistive components.

130

The loading effect of a voltmeter is determined by ______.

  1. ((a))

     the input resistance of the voltmeter

  2. ((b))

     the weight of the voltmeter 

  3. ((c))

    the size of the voltmeter display

  4. ((d))

    the frequency of the circuit 

Show Answer
Answer: ((a))

 the input resistance of the voltmeter

131

How can the range of an ammeter be extended?

  1. ((a))

     By connecting a resistor in series with the ammeter

  2. ((b))

    By increasing the applied voltage

  3. ((c))

     By connecting a shunt resistor in parallel with the ammeter

  4. ((d))

     By using a step-up transformer

Show Answer
Answer: ((a))

 By connecting a resistor in series with the ammeter

132

What is the role of a capacitor in an op-amp integrator circuit?

  1. ((a))

     It blocks AC signals and passes DC signals.

  2. ((b))

    It stores charge and accumulates voltage over time.

  3. ((c))

    It amplifies the input signal.

  4. ((d))

     It acts as a voltage divider.

Show Answer
Answer: ((a))

 It blocks AC signals and passes DC signals.

133

If a 1 : 4 demux has an input of logic 1 and the select lines (S1, S0) are set to 01, what will be the output?

  1. ((a))

    Output 2 will be 1.

  2. ((b))

    Output 3 will be 1.

  3. ((c))

    Output 0 will be 1.

  4. ((d))

    Output 1 will be 1.

Show Answer
Answer: ((a))

Output 2 will be 1.

134

Which of the following files is used for filing narrow grooves and angles above 10°?

  1. ((a))

    Half round file

  2. ((b))

    Triangular file

  3. ((c))

    Square file

  4. ((d))

     Knife-edge file

Show Answer
Answer: ((a))

Half round file

135

In the 8051, how does the interrupt enable (IE) SFR and the interrupt priority (IP) SFR work together to manage interrupt handling?

  1. ((a))

    IE enables or disables individual interrupts, while IP sets the priority level for each interrupt source

  2. ((b))

    IE sets the priority levels, while IP enables or disables individual interrupts. 

  3. ((c))

     IE enables or disables individual interrupts, while IP sets the global interrupt enable

  4. ((d))

     IE sets the global interrupt enable, while IP sets the address of the interrupt service routine. 

Show Answer
Answer: ((a))

IE enables or disables individual interrupts, while IP sets the priority level for each interrupt source

136

What is the advantage of using a transistor as a switch in a power electronic circuit?

  1. ((a))

    High current gain

  2. ((b))

    High voltage gain

  3. ((c))

    High power gain

  4. ((d))

    High switching frequency and low switching losses

Show Answer
Answer: ((a))

High current gain

137

What is the advantage of giving heat treatment to a material?

  1. ((a))

    To decrease the melting point of the material 

  2. ((b))

    To increase the weight of the material 

  3. ((c))

    To change it from one element to another element

  4. ((d))

    To make surgical knives of sharp edges

Show Answer
Answer: ((a))

To decrease the melting point of the material 

138

Which of the following configurations, commonly used in audio amplifiers, has a high current gain and a good voltage gain?

  1. ((a))

    Common Base (CB)

  2. ((b))

    Common Collector (CC)

  3. ((c))

    Common Emitter (CE)

  4. ((d))

    Common Drain (CD)

Show Answer
Answer: ((a))

Common Base (CB)

139

What happens when an object enters the sensing range of a capacitive proximity switch?

  1. ((a))

    The capacitance of the LC circuit changes. 

  2. ((b))

    The resistance of the circuit increases. 

  3. ((c))

    The circuit stops oscillating permanently. 

  4. ((d))

    The inductance of the LC circuit changes. 

Show Answer
Answer: ((a))

The capacitance of the LC circuit changes. 

140

What should be the current rating of an induction type watt meter, in general, if a current transformer is used for measurement of power? 

  1. ((a))

    2A

  2. ((b))

    5A

  3. ((c))

    10A

  4. ((d))

    30A

Show Answer
Answer: ((a))

2A

141

A drawing instrument box is used to carry all ______________ instruments.

  1. ((a))

    drilling 

  2. ((b))

    drawing

  3. ((c))

    screening

  4. ((d))

     casting

Show Answer
Answer: ((a))

drilling 

142

Manganese is used as a shunt resistor for extension of range in an Ammeter because _____.

  1. ((a))

    manganese is a superior conductor

  2. ((b))

     there won't be any magnetic loss

  3. ((c))

    there won't be any variation in resistance due to temperature

  4. ((d))

    manganese is a highly resistive material

Show Answer
Answer: ((a))

manganese is a superior conductor

143

What is the significance of beta (β) in a transistor?

  1. ((a))

    Power gain in common emitter configuration

  2. ((b))

    Current gain in common base configuration 

  3. ((c))

    Power gain in common base configuration

  4. ((d))

    Current gain in common emitter configuration

Show Answer
Answer: ((a))

Power gain in common emitter configuration

144

Which of the following is NOT the correct truth table output for an OR gate?

  1. ((a))

    1 if either input is 1

  2. ((b))

    0 if both inputs are 0

  3. ((c))

    1 if both inputs are 1

  4. ((d))

    0 if either of input is 1

Show Answer
Answer: ((a))

1 if either input is 1

145

Select the correct statement regarding amplitude modulation.

  1. ((a))

    The modulation index of AM is directly proportional to peak amplitude of the analog modulating signal and the carrier signal.

  2. ((b))

    The modulation index of AM is inversely proportional to peak amplitude of the analog modulating signal and the carrier signal.

  3. ((c))

    The modulation index of AM is directly proportional to peak amplitude of the analog modulating signal and inversely proportional to the peak amplitude of the carrier signal.

  4. ((d))

    The modulation index of AM is directly proportional to peak amplitude of the carrier signal and inversely proportional to the peak amplitude of the analog modulating signal. 

Show Answer
Answer: ((a))

The modulation index of AM is directly proportional to peak amplitude of the analog modulating signal and the carrier signal.

146

What is the sum output of a Full Adder when the inputs A = 1, B = 1, and Cin = 0?

  1. ((a))

    2

  2. ((b))

    3

  3. ((c))

    1

  4. ((d))

    0

Show Answer
Answer: ((a))

2

147

A message signal made of multiple frequency components has a maximum frequency value of 4 KHz. Find the minimum sampling frequency required according to the sampling theorem.

  1. ((a))

    8 KHz

  2. ((b))

    2 KHz

  3. ((c))

    4 KHz

  4. ((d))

    6 KHz

Show Answer
Answer: ((a))

8 KHz

148

What is a key advantage of using MOSFETs in electronic circuits compared to other types of transistors?

  1. ((a))

    High frequency response

  2. ((b))

    Ability to amplify both AC and DC signals

  3. ((c))

    Ability to handle higher voltages and currents than BJTs

  4. ((d))

    High input impedance and low power consumption

Show Answer
Answer: ((a))

High frequency response

149

If the current flowing through a conductor is 5 A and the resistance of the conductor is 10 ohms, what will be the voltage across the conductor, according to Ohm's Law?

  1. ((a))

    10 V

  2. ((b))

    50 V

  3. ((c))

    15 V

  4. ((d))

     5 V

Show Answer
Answer: ((a))

10 V

150

In a velocity-time graph, the negative slope represents _____. 

  1. ((a))

    acceleration

  2. ((b))

    retardation

  3. ((c))

    displacement

  4. ((d))

    distance

Show Answer
Answer: ((a))

acceleration

151

Which type of transformer is used in a full wave rectifier circuit with two diodes?

  1. ((a))

    Auto-transformer

  2. ((b))

     Step-up transformer

  3. ((c))

    Center-tapped transformer

  4. ((d))

    Current transformer

Show Answer
Answer: ((a))

Auto-transformer

152

In the IC 555 block diagram, which type of flip-flop is used?

  1. ((a))

    RS flip-flop

  2. ((b))

    D flip-flop

  3. ((c))

    T flip-flop

  4. ((d))

     JK flip-flop 

Show Answer
Answer: ((a))

RS flip-flop

153

How many parallel I/O ports are available in the 8051 microcontrollers?

  1. ((a))

    Five

  2. ((b))

    Four

  3. ((c))

    Three

  4. ((d))

    Two

Show Answer
Answer: ((a))

Five

154

What should you do to ensure your personal safety at work?

  1. ((a))

    Take risks to finish tasks quickly.

  2. ((b))

    Work in a hurry without checking equipment.

  3. ((c))

    Ignore warning signs and instructions. 

  4. ((d))

    Wear personal protective equipment.

Show Answer
Answer: ((a))

Take risks to finish tasks quickly.

155

Which of the following is an important safety measure during a power failure?

  1. ((a))

    Using candles for lighting

  2. ((b))

    Ignoring alarm systems

  3. ((c))

    Continuing to use equipment without verifying power status

  4. ((d))

    Ensuring all machines and electrical equipment are turned off

Show Answer
Answer: ((a))

Using candles for lighting

156

What is the output waveform of a half-wave rectifier considering input as a sinusoidal AC signal?

  1. ((a))

    Perfect sine wave

  2. ((b))

    Triangular wave

  3. ((c))

    Square wave

  4. ((d))

    Pulsating DC wave 

Show Answer
Answer: ((a))

Perfect sine wave

157

Which of the following organisations is responsible for enforcing workplace safety regulations in India?

  1. ((a))

    Environmental Protection Agency (EPA)

  2. ((b))

     World Health Organization (WHO)

  3. ((c))

     Food and Drug Administration (FDA) 

  4. ((d))

    Directorate General of Factory Advice Service and Labour Institutes (DGFASLI)

Show Answer
Answer: ((a))

Environmental Protection Agency (EPA)

158

The purpose of copper shading rings in an induction type single phase energy meter is:

  1. ((a))

     to produce eddy current damping

  2. ((b))

    to produce phase difference between flux and voltage in a pressure coil

  3. ((c))

    to produce magnetic force

  4. ((d))

     to produce controlling force

Show Answer
Answer: ((a))

 to produce eddy current damping

159

if sin⁡θ=35,\sin\theta = \frac{3}{5}, find cos⁡θ.\cos\theta.

  1. ((a))

    34\frac{3}{4}

  2. ((b))

    45\frac{4}{5}

  3. ((c))

    35\frac{3}{5}

  4. ((d))

    54\frac{5}{4}

Show Answer
Answer: ((a))

34\frac{3}{4}

160

Which of the following vices consists of a handle and a small collet chuck at one end?

  1. ((a))

    Hand vice

  2. ((b))

    Pin vice

  3. ((c))

    Toolmaker’s vice

  4. ((d))

     Pipe vice

Show Answer
Answer: ((a))

Hand vice

161

When selecting a sheet size for an original drawing, what should be the primary consideration?

  1. ((a))

    The clarity and resolution required.

  2. ((b))

    The standard size of the drawing office. 

  3. ((c))

     The size of the reproduction.

  4. ((d))

    The orientation of the drawing (horizontal or vertical).

Show Answer
Answer: ((a))

The clarity and resolution required.

162

What is the primary action that occurs in the base region of an NPN transistor when a small positive voltage is applied to the base with respect to the emitter?

  1. ((a))

    The base-emitter junction is reverse-biased.

  2. ((b))

    Electrons from the emitter are attracted to the base region.

  3. ((c))

    Holes are created in the base region.

  4. ((d))

    The collector current is reduced.

Show Answer
Answer: ((a))

The base-emitter junction is reverse-biased.

163

Arrange the following steps in the correct order to draw an equilateral triangle with each side of 35 mm.

  1. Join CA and CB.
  2. Draw a line and mark AB 35 mm as the side of the triangle.
  3. With radius AB and center A and B, draw arcs cutting at C.
  4. ABC is the required triangle.
  1. ((a))

    2, 3, 1, 4

  2. ((b))

    1, 2, 4, 3 

  3. ((c))

    2, 1, 3, 4

  4. ((d))

    3, 2, 1, 4 

Show Answer
Answer: ((a))

2, 3, 1, 4

164

What is the typical sensitivity of commercially available LVDTs?

  1. ((a))

    0.1 to 0.5 mV/mm 

  2. ((b))

    0.5 to 5 mV/mm

  3. ((c))

    5 to 10 mV/mm

  4. ((d))

    50 to 300 mV/mm

Show Answer
Answer: ((a))

0.1 to 0.5 mV/mm 

165

In a non-inverting amplifier, what is the ideal input impedance?

  1. ((a))

    Infinite

  2. ((b))

    Equal to Rin (Input Resistor)

  3. ((c))

    Zero 

  4. ((d))

    Equal to Rf (Feedback Resistor)

Show Answer
Answer: ((a))

Infinite

166

What is the effect of a decrease in base area region due to a rise in base width modulation on the collector current in a PNP transistor?

  1. ((a))

    The collector current increases.

  2. ((b))

    The collector current remains the same. 

  3. ((c))

    The collector current becomes zero.

  4. ((d))

    The collector current decreases. 

Show Answer
Answer: ((a))

The collector current increases.

167

What is the sum of  (38)+(512)?(\frac{3}{8}) + (\frac{5}{12})?

  1. ((a))

    820\frac{8}{20}

  2. ((b))

    712\frac{7}{12}

  3. ((c))

    1924\frac{19}{24}

  4. ((d))

    1724\frac{17}{24}

Show Answer
Answer: ((a))

820\frac{8}{20}

168

The pointer of the dynamo meter type power factor meter moved to the left of the centre. Which of the following does it indicate?

  1. ((a))

     Capacitive load and power factor leading

  2. ((b))

    Inductive load and power factor lagging

  3. ((c))

     Capacitive load and power factor lagging

  4. ((d))

    Inductive load and power factor leading

Show Answer
Answer: ((a))

 Capacitive load and power factor leading

169

To implement an OR gate using only NAND gates, how many NAND gates are required?

  1. ((a))

    1

  2. ((b))

    2

  3. ((c))

    3

  4. ((d))

    4

Show Answer
Answer: ((a))

1

170

How many minimum number of NAND gates will be required to implement the Boolean expression F=A⋅B‾+CF = A\cdot\overline{B} + C using only NAND gate?

  1. ((a))

    6

  2. ((b))

    3

  3. ((c))

    4

  4. ((d))

    5

Show Answer
Answer: ((a))

6

171

How can one avoid a parallax error while taking a reading from a moving iron type voltmeter?

  1. ((a))

    By seeing straight on the needle

  2. ((b))

    By seeing the needle at an angle of 90°

  3. ((c))

    By seeing the needle at an angle of 45°

  4. ((d))

    By seeing the image of the pointer on the mirror

Show Answer
Answer: ((a))

By seeing straight on the needle

172

According to BIS SP 46-2003, which of the following applications is correctly represented by a chain-thin line in engineering drawings?

  1. ((a))

    Center lines

  2. ((b))

    Hidden edges

  3. ((c))

    Dimension lines

  4. ((d))

    Visible edges

Show Answer
Answer: ((a))

Center lines

173

When measuring the resistance of a resistor using an ohmmeter, what does a reading of zero resistance indicate?

  1. ((a))

    The resistor is functioning normally. 

  2. ((b))

    The resistor is open-circuited. 

  3. ((c))

    The ohmmeter is malfunctioning.

  4. ((d))

    The resistor is short-circuited. 

Show Answer
Answer: ((a))

The resistor is functioning normally. 

174

Which of the following parts of a file is the part fitted to the tang for holding the file?

  1. ((a))

    Tang

  2. ((b))

    Edge

  3. ((c))

    Handle

  4. ((d))

    Tip or Point

Show Answer
Answer: ((a))

Tang

175

In a JK Flip-Flop, if J = 0, K = 0 and the clock pulse occurs, what will happen to the output Q?

  1. ((a))

    The output will remain unchanged. 

  2. ((b))

    The output will be reset to 0.

  3. ((c))

     The output will be set to 1. 

  4. ((d))

    The output will toggle.

Show Answer
Answer: ((a))

The output will remain unchanged. 

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