Official Paper

RRB ALP CBT-II (Electrician) Official Paper (Held On: 06 May, 2025 Shift 2) (Previous Year Paper)

175 questions · 150 minutes · with answers · free

Attempt as Timed Mock Test

Part A (100 questions)

1

A can complete a work in 14 hours, while B can do the same work in 21 hours. A started working alone. After how many hours should B join A so that the total work is completed in 10 hours?

  1. ((a))

    3

  2. ((b))

    4.5

  3. ((c))

    3.5

  4. ((d))

    4

Show Answer
Answer: ((a))

3

2

Why is regular maintenance of HVAC systems considered a medium ECO?

  1. ((a))

    It decreases the system's energy consumption.

  2. ((b))

    It prevents overheating of the system.

  3. ((c))

    It increases the cost of energy.

  4. ((d))

    It speeds up system breakdowns.

Show Answer
Answer: ((a))

It decreases the system's energy consumption.

3

The speed of a train is 144 km/hr. The distance covered by the train in 12 seconds is:

  1. ((a))

    480 m

  2. ((b))

    103 m

  3. ((c))

    518 m

  4. ((d))

    78 m

Show Answer
Answer: ((a))

480 m

4

In a certain code language, 'GOES' is coded as '8624' and 'SNYC' is coded as '3817'.

What is the code for 'S' in the given code language?

  1. ((a))

    8

  2. ((b))

    4

  3. ((c))

    3

  4. ((d))

    2

Show Answer
Answer: ((a))

8

5

In a certain code language, 'BOAT' is coded as '8654' and 'AIDS' is coded as '3517'.

What is the code for 'A' in the given code language?

  1. ((a))

    6

  2. ((b))

    5

  3. ((c))

    3

  4. ((d))

    8

Show Answer
Answer: ((a))

6

6

The weights (in kg) of 20 students of a class have been recorded as 35, 42, 56, 44, 55, 44, 36, 44, 49, 48, 55, 35, 44, 47, 49, 48, 56, 44, 37 and 35. The modal weight (in kg) of the class is:

  1. ((a))

    47

  2. ((b))

    37

  3. ((c))

    44

  4. ((d))

    45

Show Answer
Answer: ((a))

47

7

Pipes A and B can fill a rectangular tank in 40 minutes and 120 minutes, respectively. Pipe C can empty the completely filled same tank in 240 minutes. If pipes A, B and C are opened at the same time, then how many minutes will it take to fill the tank?

  1. ((a))

    342834\frac{2}{8}

  2. ((b))

    342734\frac{2}{7}

  3. ((c))

    322732\frac{2}{7}

  4. ((d))

    343734\frac{3}{7}

Show Answer
Answer: ((a))

342834\frac{2}{8}

8

Which of the following actions involves scientific work?

  1. ((a))

    Spending time conversing with friends

  2. ((b))

    Climbing up the stairs

  3. ((c))

    Watching a film

  4. ((d))

    Holding a large load on one's head while standing motionless

Show Answer
Answer: ((a))

Spending time conversing with friends

9

How is a voltmeter connected in a circuit to measure potential difference?

  1. ((a))

    In parallel across the points where potential difference is to be measured

  2. ((b))

    In series with the circuit

  3. ((c))

    Neither in series nor in parallel

  4. ((d))

    Directly to the power source only

Show Answer
Answer: ((a))

In parallel across the points where potential difference is to be measured

10

Find the minimum value of 2x 2 - 5x - 3 and also find x.

  1. ((a))
    • 6.125 and x = 1.25
  2. ((b))

    -6.125 and x = 0.25

  3. ((c))

    6.125 and x = 1.25

  4. ((d))

    6.125 and x = 1.2

Show Answer
Answer: ((a))
  • 6.125 and x = 1.25
11

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 letter-cluster DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

  1. ((a))

    CGXF

  2. ((b))

    UYPW

  3. ((c))

    QULS

  4. ((d))

    JNEL

Show Answer
Answer: ((a))

CGXF

12

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?

AD8, FI16, KN24, ?

  1. ((a))

    OS32

  2. ((b))

    OR35

  3. ((c))

    PS35

  4. ((d))

    PS32

Show Answer
Answer: ((a))

OS32

13

Select the pair which follows the same pattern as that followed by the two sets of pairs given below. Both pairs follow the same pattern.

ARF: YTH

WVJ: UXL

  1. ((a))

    MEL: HZN

  2. ((b))

    SZN: QBP

  3. ((c))

    QEB: NBD

  4. ((d))

    KXF: HZH

Show Answer
Answer: ((a))

MEL: HZN

14

By how much is 60% of 50 greater than 45\frac{4}{5}of 35?

  1. ((a))

    2

  2. ((b))

    3

  3. ((c))

    4

  4. ((d))

    1

Show Answer
Answer: ((a))

2

15

Which of the following is NOT an SI unit?

  1. ((a))

    Hour

  2. ((b))

    Metre

  3. ((c))

    Mole

  4. ((d))

    Kilogram

Show Answer
Answer: ((a))

Hour

16

The speed of a bus is 6 metres/second. The distance (in kilometres) travelled by the bus in 8 hours and 20 minutes is:

  1. ((a))

    185

  2. ((b))

    180

  3. ((c))

    184

  4. ((d))

    175

Show Answer
Answer: ((a))

185

17

Three partners, A, B and C, shared the profit in a business in the proportion of 11: 13: 16. They invested their capitals for 7 months, 5 months and 12 months, respectively. What was the ratio of their capitals?

  1. ((a))

    165 :273 :140

  2. ((b))

    96: 135: 101

  3. ((c))

    3:5:8

  4. ((d))

    21:35:44

Show Answer
Answer: ((a))

165 :273 :140

18

T-Square is used to _______in engineering drawings.

  1. ((a))

    support the drawing paper/tracing paper for making drawings

  2. ((b))

    draw curved lines on drawing sheets

  3. ((c))

    draw horizontal lines, parallel lines and to guide/hold the setsquares

  4. ((d))

    transfer dimensions and dividing lines into a number of equal parts

Show Answer
Answer: ((a))

support the drawing paper/tracing paper for making drawings

19

Which of the following features is unique to Telegram compared to WhatsApp and Facebook Messenger?

  1. ((a))

    Voice and video calling capabilities

  2. ((b))

    End-to-end encryption for all messages

  3. ((c))

    Ability to create channels for broadcasting messages to large audiences

  4. ((d))

    Integration with Facebook for seamless sharing

Show Answer
Answer: ((a))

Voice and video calling capabilities

20

Calculate the resistance of the bulb filament if it draws 200 mA current from 220 V source.

  1. ((a))

    0Ω

  2. ((b))

    1100 Ω

  3. ((c))

    220 Ω

  4. ((d))

    44 Ω

Show Answer
Answer: ((a))

0Ω

21

Which of the following processes causes accumulation of heavy metals such as lead and mercury in soil?

  1. ((a))

    Ozone layer depletion

  2. ((b))

    Improper disposal of industrial wastes

  3. ((c))

    Water evaporation

  4. ((d))

    Natural soil formation

Show Answer
Answer: ((a))

Ozone layer depletion

22

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

WU5, SQ7, NL11, ?

  1. ((a))

    GE17

  2. ((b))

    HF13

  3. ((c))

    GE13

  4. ((d))

    HE15

Show Answer
Answer: ((a))

GE17

23

Which of the following statements is correct?

  1. ((a))

    All metals are poor conductors of heat.

  2. ((b))

    Plastic and wood allow heat to pass through them easily.

  3. ((c))

    Dry air is a good conductor of heat.

  4. ((d))

    Copper and aluminium are good conductors of heat

Show Answer
Answer: ((a))

All metals are poor conductors of heat.

24

If 24 joules of work is done in moving a charge of 2 coulombs across two points, then what will be the correct voltage across these two points?

  1. ((a))

    2 V

  2. ((b))

    12 V

  3. ((c))

    24 V

  4. ((d))

    48 V

Show Answer
Answer: ((a))

2 V

25

The two sides CB and BA of triangle ABC are produced to CE and BD, respectively, in such a way that angle DAC = 110° ; and angle ABE = 130° . Which of the following options is true?

  1. ((a))

    AC <AB < BC

  2. ((b))

    BC <AC <AB

  3. ((c))

    AB <AC <BC

  4. ((d))

    BC <AB < AC

Show Answer
Answer: ((a))

AC <AB < BC

26

The marked price of an item is ₹27,500. The shopkeeper gave two successive discounts: the first discount was 20%, and the second was 30% of the first discount rate. What is the selling price of the item (in rupees)?

  1. ((a))

    1,26,080

  2. ((b))

    20,860

  3. ((c))

    20,086

  4. ((d))

    20,680

Show Answer
Answer: ((a))

1,26,080

27

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

#: KHM:: OLQ: %

  1. ((a))

    #LIN, % = NKO

  2. ((b))

    #LIN, % = NLP

  3. ((c))

    #LIN, %= NKP

  4. ((d))

    #LIM, % = NKP

Show Answer
Answer: ((a))

#LIN, % = NKO

28

Which of the following statements is INCORRECT?

  1. ((a))

    In solids, heat transfer is typically carried out through conduction.

  2. ((b))

    Burning of feet on hot sand is an example of heat transfer by conduction.

  3. ((c))

    Conduction is the process of heat transfer that does not require any medium to transfer heat

  4. ((d))

    Conduction is the process of heat transfer from hotter body to colder body.

Show Answer
Answer: ((a))

In solids, heat transfer is typically carried out through conduction.

29

A man rides a bicycle from Point A to Point B in 10 minutes and comes back to Point A along the same path in 10 minutes. If the distance between Points A and B is 1 km, calculate his average velocity?

  1. ((a))

    3.3 m/s

  2. ((b))

    1.6 m/s

  3. ((c))

    0 m/s

  4. ((d))

    0.1 m/s

Show Answer
Answer: ((a))

3.3 m/s

30

What is the dimensional equation of mass density (p)?

  1. ((a))

    [ML-3T2]

  2. ((b))

    [M0 L³ T0]

  3. ((c))

    [ML-3T0]

  4. ((d))

    [M L-2 T0]

Show Answer
Answer: ((a))

[ML-3T2]

31

What is the kinetic energy possessed by an object having mass 25 kg and moving with a uniform velocity of 2 m s-¹?

  1. ((a))

    80 J

  2. ((b))

    50 J

  3. ((c))

    120 J

  4. ((d))

    100 J

Show Answer
Answer: ((a))

80 J

32

What is the value of 100 g in Sl units?

  1. ((a))

    1 kg

  2. ((b))

    0.1 kg

  3. ((c))

    100 kg

  4. ((d))

    10 kg

Show Answer
Answer: ((a))

1 kg

33

A mass m is moving with a velocity v and its kinetic energy is K. What will be the new kinetic energy if the velocity is doubled?

  1. ((a))

    2K

  2. ((b))

    K

  3. ((c))

    4 K

  4. ((d))

    K/2

Show Answer
Answer: ((a))

2K

34

Which of the following is a main greenhouse gas that is responsible for global warming?

  1. ((a))

    Nitrogen

  2. ((b))

    Helium

  3. ((c))

    Carbon Dioxide

  4. ((d))

    Oxygen

Show Answer
Answer: ((a))

Nitrogen

35

Which of the following tools is commonly used to support the 'Standardize' step in the 5S methodology?

  1. ((a))

    Labels and signs

  2. ((b))

    Cleaning supplies

  3. ((c))

    Floor markings

  4. ((d))

    Job cycle charts

Show Answer
Answer: ((a))

Labels and signs

36

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 letter-cluster DOES NOT belong to that group?

(Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

  1. ((a))

    GMKT

  2. ((b))

    EKJR

  3. ((c))

    VBZI

  4. ((d))

    IOMV

Show Answer
Answer: ((a))

GMKT

37

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

Y13, F11, L9, Q7, U5, X3, ?

  1. ((a))

    22

  2. ((b))

    A1

  3. ((c))

    Z1

  4. ((d))

    Y1

Show Answer
Answer: ((a))

22

38

Given below are two sets of numbers. Both the sets are formed using the same mathematical equations or follow a common pattern. Which of the given options follows the same set of mathematical equations or patterns as the sets given in the question?

1333-1730-2199-2746-3377

218-345-514-731-1002

  1. ((a))

    123 - 146 - 171 - 198 - 227

  2. ((b))

    38 - 51 - 66 - 83 - 102

  3. ((c))

    3-10-29-66-127

  4. ((d))

    3 - 6 - 11 - 18 - 27

Show Answer
Answer: ((a))

123 - 146 - 171 - 198 - 227

39

Two sets of numbers are given below. In each set of numbers, certain mathematical operation(s) on the first number results in the second number. Similarly, certain mathematical operation(s) on the second number results in the third number and so on. Which of the given options follows the same set of operations as in the given sets?

(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13-Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

988-494-444-534; 894-447-397-487

  1. ((a))

    138 - 69 - 14 - 98

  2. ((b))

    226 - 113 - 144 - 268

  3. ((c))

    586 - 293 - 244 - 328

  4. ((d))

    682-341-291-381

Show Answer
Answer: ((a))

138 - 69 - 14 - 98

40

What is the first step to take in case of a power failure in a workshop?

  1. ((a))

    Continue working as usual

  2. ((b))

    Check if emergency lighting and backup power are functional

  3. ((c))

    Panic and leave the premises immediately

  4. ((d))

    Ignore the situation and wait for power to return

Show Answer
Answer: ((a))

Continue working as usual

41

Which of the following is an ethical concern related to Information Technology?

  1. ((a))

    Enhancement of communication channels

  2. ((b))

    Privacy violations and data breaches

  3. ((c))

    Reduction in administrative costs

  4. ((d))

    Increased accessibility to educational resources

Show Answer
Answer: ((a))

Enhancement of communication channels

42

Which term is used to describe the closeness of the measured value to the standard or true value?

  1. ((a))

    Mean

  2. ((b))

    Precision

  3. ((c))

    Approximate

  4. ((d))

    Accuracy

Show Answer
Answer: ((a))

Mean

43

Which of the following is NOT correct about Joule's law of heating?

  1. ((a))

    Heat produced in a resistor is directly proportional to the square of the current for a given resistance.

  2. ((b))

    Heat produced in a resistor is directly proportional to the time for which the current flows through the resistor.

  3. ((c))

    Heat produced in a resistor is directly proportional to the resistance for a given current.

  4. ((d))

    Heat produced in a resistor is inversely proportional to the square of the current for a given resistance.

Show Answer
Answer: ((a))

Heat produced in a resistor is directly proportional to the square of the current for a given resistance.

44

Which of the following terms is used to describe the pollutants that originate from identifiable sources, such as factories or vehicles?

  1. ((a))

    Non-point Source Pollution

  2. ((b))

    Random Pollution

  3. ((c))

    Point Source Pollution

  4. ((d))

    Radicle Pollution

Show Answer
Answer: ((a))

Non-point Source Pollution

45

How does installing energy-efficient windows in an old building affect energy consumption?

  1. ((a))

    It has no effect on fuel consumption.

  2. ((b))

    It causes indoor temperatures to rise.

  3. ((c))

    It reduces heating and cooling costs in the building.

  4. ((d))

    It increases the need for artificial lighting.

Show Answer
Answer: ((a))

It has no effect on fuel consumption.

46

Which of the following is generally the temperature range in a laboratory thermometer?

  1. ((a))

    -10°C to 110°C

  2. ((b))

    -10°C to 150°C

  3. ((c))

    -100°C to 130°C

  4. ((d))

    35°C to 42°C

Show Answer
Answer: ((a))

-10°C to 110°C

47

A refrigerator seller offers a discount of 10% on its listed price of ₹57,500 and still earns a profit of 15%. The cost price of the refrigerator is:

  1. ((a))

    ₹45,000

  2. ((b))

    ₹42,000

  3. ((c))

    ₹40,000

  4. ((d))

    ₹48,000

Show Answer
Answer: ((a))

₹45,000

48

A person saves 50% of his income. If his expenditure is 440, then his income (in ₹) is:

  1. ((a))

    600

  2. ((b))

    880

  3. ((c))

    920

  4. ((d))

    560

Show Answer
Answer: ((a))

600

49

Which of the following is the correct statement of Ohm's Law?

  1. ((a))

    If the potential difference across the two ends of a conductor is 1 V and the current through it is 1A, then the resistance of the conductor is 20.

  2. ((b))

    The potential difference across the ends of a conductor is inversely proportional to the current flowing through it.

  3. ((c))

    The potential difference across the ends of a conductor is directly proportional to the current flowing through it.

  4. ((d))

    Current through a resistor is directly proportional to its resistance.

Show Answer
Answer: ((a))

If the potential difference across the two ends of a conductor is 1 V and the current through it is 1A, then the resistance of the conductor is 20.

50

A shopkeeper sells sugar at 30 per kg, which he has bought at 24 per kg. Being dishonest, he also gives only y gm of sugar instead of 1000 gm that is mentioned on the weight. In this way, the shopkeeper manages to make an overall profit of 6623\frac{2}{3}%. What is the value of y?

  1. ((a))

    600

  2. ((b))

    720

  3. ((c))

    800

  4. ((d))

    750

Show Answer
Answer: ((a))

600

51

What is the SI unit for solid angle?

  1. ((a))

    Metre

  2. ((b))

    Candela

  3. ((c))

    Radian

  4. ((d))

    Steradian

Show Answer
Answer: ((a))

Metre

52

Eight people are sitting in two parallel rows containing 4 people each in such a way that there is equal distance between adjacent persons. In row 1-A, B, C and D are seated and all of them are facing south. In row 2-P, Q, R and S are seated and all of them are facing north. Thus each person faces another person from the other row. No one sits to the left of B. R faces the person who sits second to the right of D. C faces the person who is the immediate neighbour of Q and R, B does not face S. Who amongst the following faces P?

  1. ((a))

    D

  2. ((b))

    A

  3. ((c))

    B

  4. ((d))

    C

Show Answer
Answer: ((a))

D

53

Study the given graph and answer the question that follows.

<br>

What is the average profit percentage of the given years?

  1. ((a))

    44%

  2. ((b))

    43.4%

  3. ((c))

    44.1%

  4. ((d))

    45%

Show Answer
Answer: ((a))

44%

54

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 with commonly known facts, decide which of the given conclusion(s) logically follow(s) from the statements.

Statements:

I. All books are pencils.

II. All pencils are cardboards.

III. All cardboards are notebooks.

Conclusions:

I. Some notebooks are pencils.

II. Some cardboards are books.

III. Some notebooks are books.

  1. ((a))

    Only conclusions I and II follow.

  2. ((b))

    All conclusions I, II and III follow

  3. ((c))

    Only conclusions I and III follow.

  4. ((d))

    Only conclusions II and III follow.

Show Answer
Answer: ((a))

Only conclusions I and II follow.

55

What type of view is represented of the given machine component?

  1. ((a))

    Oblique view

  2. ((b))

    Orthographic view

  3. ((c))

    Perspective view

  4. ((d))

    Isometric view

Show Answer
Answer: ((a))

Oblique view

56

In order to resolve disputes arising from cyber crime, such as tampering with computer source documents, hacking the computer system, using password of another person and publishing sensitive personal data of others without their consent, a forum has been established by the Central Government (India) in accordance with the provisions contained under Section 48(1) of the Information Technology Act, 2000. What is the name of that forum?

  1. ((a))

    Cyber Appellate Tribunal

  2. ((b))

    National Cybercrime Reporting Station

  3. ((c))

    Cybercrime Reporting Tribunal

  4. ((d))

    Internet Crime Complaint Center

Show Answer
Answer: ((a))

Cyber Appellate Tribunal

57

When reporting a fire in an emergency, what is the most critical information to provide to emergency services?

  1. ((a))

    The weather conditions at the time of the fire

  2. ((b))

    How the fire started and if someone is injured or missing

  3. ((c))

    The likely cause of the fire and the building owner's name

  4. ((d))

    The colour of the smoke and the direction it is moving

Show Answer
Answer: ((a))

The weather conditions at the time of the fire

58

Why does a combination of two thin blankets keep you warmer in the winter than a single thick blanket?

  1. ((a))

    Two thin blankets allow more heat to escape, keeping you warmer.

  2. ((b))

    Two blankets create an additional insulating layer of air, reducing heat loss

  3. ((c))

    Two thin blankets generate more heat than one thick blanket.

  4. ((d))

    Two thin blankets absorb more heat from the surroundings than one thick blanket.

Show Answer
Answer: ((a))

Two thin blankets allow more heat to escape, keeping you warmer.

59

What is necessary for a circuit to have electric current flowing through it?

  1. ((a))

    A closed conducting path with a voltage source

  2. ((b))

    Only wire

  3. ((c))

    Only switch

  4. ((d))

    Only bulb

Show Answer
Answer: ((a))

A closed conducting path with a voltage source

60

Which of the following is NOT correct?

  1. ((a))

    An object moving with a constant velocity represents uniform motion.

  2. ((b))

    The motion of satellite around Earth in a circular orbit is uniform circular motion.

  3. ((c))

    A person jogging in the park is not an example of uniform circular motion.

  4. ((d))

    The distance-time graph of an object moving with uniform speed is not a straight line:

Show Answer
Answer: ((a))

An object moving with a constant velocity represents uniform motion.

61

Among three partners A, B and C in a business. The capital of B is equal to half the difference between thrice the capital of C and twice the capital of A. If at the end of the year, they received a profit of 25,415, what is the share of C (in)?

  1. ((a))

    9,166

  2. ((b))

    8,666

  3. ((c))

    11,666

  4. ((d))

    10,166

Show Answer
Answer: ((a))

9,166

62

E, F, G, H, P, Q, and R, are sitting around a circular table facing the centre. F sits third to the left of H. Only two people sit between H and G when counted from the right of H. Q is an immediate neighbor of G. P is NOT an immediate neighbour of H. E is an Immediate neighbour of Q. Who sits second to the left of E?

  1. ((a))

    H

  2. ((b))

    R

  3. ((c))

    G

  4. ((d))

    P

Show Answer
Answer: ((a))

H

63

The cost of painting a spherical ball at the rate of ₹2.50 per cm² is 13,860. What is the diameter of the ball? (Use π = 22/7)

  1. ((a))

    40 cm

  2. ((b))

    48 cm

  3. ((c))

    21 cm

  4. ((d))

    42 cm

Show Answer
Answer: ((a))

40 cm

64

In an electrical circuit, 'n' number of 10 Ohm resistors are connected in parallel. When one of the resistors is eliminated, the overall resistance of the circuit is __________.

  1. ((a))

    1n2\frac{1}{n^2}

  2. ((b))

    Zero

  3. ((c))

    1n\frac{1}{n}

  4. ((d))

    1(n−1)\frac{1}{(n-1)}

Show Answer
Answer: ((a))

1n2\frac{1}{n^2}

65

What is the ratio of areas between two consecutive format sheet sizes created by halving the length or doubling the width?

  1. ((a))

    2:1

  2. ((b))

    1:4

  3. ((c))

    1:2

  4. ((d))

    4:1

Show Answer
Answer: ((a))

2:1

66

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

47 D 25 A 5C2B9=?

  1. ((a))

    62

  2. ((b))

    60

  3. ((c))

    58

  4. ((d))

    56

Show Answer
Answer: ((a))

62

67

What is the primary purpose of netiquette in online communication?

  1. ((a))

    To ensure polite and respectful interactions

  2. ((b))

    To enhance internet connection speed

  3. ((c))

    To improve typing speed

  4. ((d))

    To increase the number of followers on social media

Show Answer
Answer: ((a))

To ensure polite and respectful interactions

68

The thickness of a thread is measured by a student using a microscope of magnification 100. After making 30 observations, he finds the average width of the thread is 5.7 mm. What is the estimated thickness of the thread?

  1. ((a))

    171 mm

  2. ((b))

    0.057 mm

  3. ((c))

    0.57 mm

  4. ((d))

    0.09 mm

Show Answer
Answer: ((a))

171 mm

69

The interest of (10r)2 in r time at rate r10\frac{r}{10}% is __________.

  1. ((a))

    r410\frac{r^4}{10}

  2. ((b))

    10r410r^4

  3. ((c))

    r420\frac{r^4}{20}

  4. ((d))

    r45\frac{r^4}{5}

Show Answer
Answer: ((a))

r410\frac{r^4}{10}

70

A force of 6 N is exerted on an object, resulting in its displacement of 2 m in the direction of the force. If the force is constant during the displacement, what is the work done in this case?

  1. ((a))

    25 J

  2. ((b))

    12 J

  3. ((c))

    3 J

  4. ((d))

    10 J

Show Answer
Answer: ((a))

25 J

71

If 21.6: x:: x: 29.4, and x > 0 then find the value of x.

  1. ((a))

    23.9

  2. ((b))

    23.3

  3. ((c))

    25.4

  4. ((d))

    25.2

Show Answer
Answer: ((a))

23.9

72

Which of the following statements is NOT true?

  1. ((a))

    Clinical thermometer should not be used to measure the temperature of boiling water.

  2. ((b))

    Clinical and laboratory thermometers are the same.

  3. ((c))

    The range of clinical thermometer is 35 to 42°C.

  4. ((d))

    Laboratory thermometer cannot be used to measure body temperature.

Show Answer
Answer: ((a))

Clinical thermometer should not be used to measure the temperature of boiling water.

73

Which of the following options is NOT a necessary characteristic of a kite?

  1. ((a))

    At least one diagonal is bisected by the other diagonal.

  2. ((b))

    The diagonals are perpendicular to each other.

  3. ((c))

    The pairs of opposite angles are bisected by the corresponding diagonals.

  4. ((d))

    At least one pair of opposite angles is congruent.

Show Answer
Answer: ((a))

At least one diagonal is bisected by the other diagonal.

74

A porter lifts a 10 kg luggage from the ground and places it on his head, 2.5 m above the ground. Calculate the work done by him on the luggage. (Take g = 10m s- 2)

  1. ((a))

    200 J

  2. ((b))

    100 J

  3. ((c))

    250 J

  4. ((d))

    250 N

Show Answer
Answer: ((a))

200 J

75

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

179 171 163? 147 139

  1. ((a))

    155

  2. ((b))

    157

  3. ((c))

    151

  4. ((d))

    153

Show Answer
Answer: ((a))

155

76

If x + y + z = 0 then find the value of x22yz+y22xz+z22xy\frac{x^2}{2yz} + \frac{y^2}{2xz} + \frac{z^2}{2xy}

  1. ((a))

    25\frac{2}{5}

  2. ((b))

    32\frac{3}{2}

  3. ((c))

    35\frac{3}{5}

  4. ((d))

    23\frac{2}{3}

Show Answer
Answer: ((a))

25\frac{2}{5}

77

In a certain code language, 'WIDE' is coded as '8694' and 'INKS' is coded as '3917', 7 What is the code for 'I' in the given code language?

  1. ((a))

    8

  2. ((b))

    3

  3. ((c))

    7

  4. ((d))

    9

Show Answer
Answer: ((a))

8

78

A shopkeeper allows a discount of 18% on the marked price of an article and sells it for 2,870. Find the marked price of the article.

  1. ((a))

    ₹3,200

  2. ((b))

    ₹3,350

  3. ((c))

    ₹3,460

  4. ((d))

    ₹3,500

Show Answer
Answer: ((a))

₹3,200

79

Which is the least number that must be subtracted from 5563 to make it exactly divisible by 18?

  1. ((a))

    5

  2. ((b))

    7

  3. ((c))

    3

  4. ((d))

    1

Show Answer
Answer: ((a))

5

80

Study the given table carefully and answer the question that follows.

Number of students who
Appeared for the examPassed the exam
Class IX10489
Class X6347

What was the total number of students who failed the exam from classes IX and X?

  1. ((a))

    21

  2. ((b))

    31

  3. ((c))

    28

  4. ((d))

    33

Show Answer
Answer: ((a))

21

81

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 one out is not based on the number of consonants/vowels or their position in the letter-cluster pair)

  1. ((a))

    QL-NT

  2. ((b))

    BW-YE

  3. ((c))

    KF-HM

  4. ((d))

    DY-AG

Show Answer
Answer: ((a))

QL-NT

82

Identify the orthographic symbol of a pipe fitting shown in the figure.

  1. ((a))

    Tee

  2. ((b))

    Cross

  3. ((c))

    Union

  4. ((d))

    Bend

Show Answer
Answer: ((a))

Tee

83

Read the given statement and conclusions carefully. Assume that the information given in the statement is true, even if it appears to be at variance with commonly known facts, and decide which of the given conclusion(s) logically follow(s) from the statement.

Statement:

Over the past year, respiratory illnesses have increased significantly in city W. According to a public health study, this increase is linked to the increase in the number of cars, which raises air pollution levels on the roads.

Conclusions:

I. Increased vehicular traffic contributes to higher levels of air pollution.

II. Improving public transportation will reduce respiratory illnesses in city W.

  1. ((a))

    Both conclusions I and II follow.

  2. ((b))

    Neither conclusion I nor II follows.

  3. ((c))

    Only conclusion II follows.

  4. ((d))

    Only conclusion 1 follows.

Show Answer
Answer: ((a))

Both conclusions I and II follow.

84

An object’s potential energy is equal to ________.

  1. ((a))

    Change in velocity

  2. ((b))

    Change in acceleration

  3. ((c))

    Transfer of energy

  4. ((d))

    Loss of energy

Show Answer
Answer: ((a))

Change in velocity

85

Which of the following is the primary reason for adopting scientifically designed methods for safely disposing of toxic waste from automobiles?

  1. ((a))

    To improve vehicle lifespan by minimising mechanical wear

  2. ((b))

    To increase vehicle performance by optimising engine efficiency

  3. ((c))

    To reduce fuel consumption and improve overall efficiency

  4. ((d))

    To protect human health from harmful fumes and dust in the air

Show Answer
Answer: ((a))

To improve vehicle lifespan by minimising mechanical wear

86

Given below are two sets of numbers. Both the sets are formed using the same mathematical equations or follow a common pattern. Which of the given options follows the same set of mathematical equations or patterns as the sets given in the question?

4-9-25-64-169; 16-49-121-324-841

  1. ((a))

    64 - 100 - 144 - 196 - 256

  2. ((b))

    16 - 36 - 64 - 100 - 144

  3. ((c))

    4 - 16 - 36 - 64 - 100

  4. ((d))

    64-225-529-1444-3721

Show Answer
Answer: ((a))

64 - 100 - 144 - 196 - 256

87

Examine the symbolic representation of the hole and rivet provided below. According to BIS SP 46-2003, what does this symbol represent?

  1. ((a))

    Drilled in the workshop

  2. ((b))

    Fitted in the workshop

  3. ((c))

    Drilled and fitted on-site

  4. ((d))

    Drilled on-site

Show Answer
Answer: ((a))

Drilled in the workshop

88

The ABC Association meeting will be held on the 2nd Sunday of next month. The registration fee is ₹50 per person. Participants will be provided meals at an additional cost of ₹24. If the number of people who paid for meals is 100 more than those who did not pay for meals, and the total amount collected from registrations and meals is ₹69,400, then how many people registered and how many meals should be prepared?

  1. ((a))

    1100 and 1100

  2. ((b))

    1100 and 600

  3. ((c))

    1100 and 50

  4. ((d))

    500 and 600

Show Answer
Answer: ((a))

1100 and 1100

89

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

62 73 87 104 124 ?

  1. ((a))

    142

  2. ((b))

    147

  3. ((c))

    134

  4. ((d))

    153

Show Answer
Answer: ((a))

142

90

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

Q16, O14, M12, K10, I8, ?

  1. ((a))

    G4

  2. ((b))

    H6

  3. ((c))

    G6

  4. ((d))

    J6

Show Answer
Answer: ((a))

G4

91

Which element is used in thermometers?

  1. ((a))

    Bromine

  2. ((b))

    Mercury

  3. ((c))

    Gallium

  4. ((d))

    Lead

Show Answer
Answer: ((a))

Bromine

92

Two trains are running in opposite directions at the same speed. The length of each train is 175 m. If they cross each other in 7 s, the speed of each train is:

  1. ((a))

    75 km/hr

  2. ((b))

    90 km/hr

  3. ((c))

    85 km/hr

  4. ((d))

    80 km/hr

Show Answer
Answer: ((a))

75 km/hr

93

If the length, the breadth, and the height of a cuboid are 5 m, 2 m, and 50 cm, respectively, then find its volume.

  1. ((a))

    500 m³

  2. ((b))

    20 m³

  3. ((c))

    50m³

  4. ((d))

    5 m³

Show Answer
Answer: ((a))

500 m³

94

If an electric load draws a current of 2 A for 1 second, then calculate the number of electrons (with charge 1.6 × 10-19 °c ) passing through the load.

  1. ((a))

    1.25x10 20

  2. ((b))

    0.25 x 1019

  3. ((c))

    0.25 x 1020

  4. ((d))

    1.25 x1019

Show Answer
Answer: ((a))

1.25x10 20

95

An electric heater of resistance 50 uses a current of 3 A. Determine the heat generated in 20 seconds.

  1. ((a))

    5000 J

  2. ((b))

    1000 J

  3. ((c))

    9000 J

  4. ((d))

    60 J

Show Answer
Answer: ((a))

5000 J

96

Which of the following keyboard shortcuts on a Windows 10 home screen opens the item's properties?

  1. ((a))

    Insert + Alt

  2. ((b))

    F2 + Alt

  3. ((c))

    Tab + Del

  4. ((d))

    Alt + Enter

Show Answer
Answer: ((a))

Insert + Alt

97

Which of the following is NOT a good heat conductor?

  1. ((a))

    Fur

  2. ((b))

    Copper

  3. ((c))

    Iron

  4. ((d))

    Aluminum

Show Answer
Answer: ((a))

Fur

98

A, B, C, D, E, and F live on six different floors of the same building. The lowest floor of the building is numbered 1, the floor above it is numbered 2, and the top floor is numbered 6. E lives on an even-numbered floor but not on floor 4. The sum of the floor numbers where E and B live is 9. Only three people live between A and C. The sum of the floor numbers where F and C live is 3. What is the sum of the floor numbers where B and F live?

  1. ((a))

    6

  2. ((b))

    4

  3. ((c))

    7

  4. ((d))

    5

Show Answer
Answer: ((a))

6

99

Under which Section of the Factories Act, of 1948, is the employment of women and children near cotton openers prohibited?

  1. ((a))

    Section 25

  2. ((b))

    Section 21

  3. ((c))

    Section 27

  4. ((d))

    Section 29

Show Answer
Answer: ((a))

Section 25

100

Four chairs and a table set up cost 22,000. Determine the table's cost, if it is ₹2,000 more expensive than the chair.

  1. ((a))

    ₹6,000

  2. ((b))

    ₹5,000

  3. ((c))

    ₹4,000

  4. ((d))

    ₹6,500

Show Answer
Answer: ((a))

₹6,000

Part B (75 questions)

101

Rotating field type alternator is generally used for rating of up to _______.

  1. ((a))

    250 KVA

  2. ((b))

    100 kVA

  3. ((c))

    1000 MVA 

  4. ((d))

    1000 VA 

Show Answer
Answer: ((a))

250 KVA

102

Which of the following statements is NOT correct for using scribers?

  1. ((a))

    While scribing lines, the scriber is used like a pencil.

  2. ((b))

    Do not put the scriber in your pocket. 

  3. ((c))

    Scriber points are very sharp, so they are to be handled very carefully. 

  4. ((d))

    Place a cork on the point when in use to prevent accidents. 

Show Answer
Answer: ((a))

While scribing lines, the scriber is used like a pencil.

103

The function of slots on stator is to:

  1. ((a))

    excite the field system

  2. ((b))

    provide effective cooling

  3. ((c))

    house the armature conductors 

  4. ((d))

    strengthen the core

Show Answer
Answer: ((a))

excite the field system

104

In a logic circuit, two inputs A and B are applied to an AND gate, and the output of the AND gate is connected to the input of a NOT gate. If the inputs A and B are both at logic 0, what will be the output of the entire circuit? 

  1. ((a))

    0

  2. ((b))

    Undefined

  3. ((c))

    1

  4. ((d))

    2

Show Answer
Answer: ((a))

0

105

What is the typical temperature range of a mercury-based clinical thermometer?

  1. ((a))

    −10°C to 110°C

  2. ((b))

     0°C to 50°C

  3. ((c))

    0°C to 100°C

  4. ((d))

    35°C to 42°C 

Show Answer
Answer: ((a))

−10°C to 110°C

106

Which of the following information is necessary to construct a rectangle?

  1. ((a))

    Only the length of the diagonal

  2. ((b))

    Only the length of one side 

  3. ((c))

    Length of two adjacent sides

  4. ((d))

    Length of one side and the area of the rectangle

Show Answer
Answer: ((a))

Only the length of the diagonal

107

What is NOT an advantage of using plate earthing over other types of earthing?

  1. ((a))

    Low installation cost

  2. ((b))

    Requires less maintenance 

  3. ((c))

    Provides low resistance in high-resistivity soil

  4. ((d))

    More suitable for high-voltage systems

Show Answer
Answer: ((a))

Low installation cost

108

In a three-phase system, if the phase current is 20 A in a delta connection, what is the line current? 

  1. ((a))

    20 A

  2. ((b))

    203A 20\sqrt{3}A

  3. ((c))

    203A \frac{20}{\sqrt{3}}A

  4. ((d))

    10 A

Show Answer
Answer: ((a))

20 A

109

After solving the series and parallel combinations, what is the final equivalent resistance between A and B?

  1. ((a))

    10 Ω

  2. ((b))

    8 Ω

  3. ((c))

    6 Ω

  4. ((d))

    4 Ω 

Show Answer
Answer: ((a))

10 Ω

110

What does the term 'Ferreed' in Ferreed relay stand for?

  1. ((a))

    A thermally operated relay

  2. ((b))

    A voltage stabiliser component 

  3. ((c))

    A combination of ferrite and reed switch 

  4. ((d))

    A type of current sensing relay

Show Answer
Answer: ((a))

A thermally operated relay

111

Which of the following characteristics of a GTO is most important for its use in highpower switching applications?

  1. ((a))

    Its ability to handle very low currents.

  2. ((b))

    Its fast switching speed.

  3. ((c))

     Its ability to be turned off by a gate signal.

  4. ((d))

    Its high thermal stability. 

Show Answer
Answer: ((a))

Its ability to handle very low currents.

112

Who is authorised to conduct road tests on workshop vehicles? 

  1. ((a))

    The company accountant

  2. ((b))

    Only trained and certified personnel 

  3. ((c))

    Any employee 

  4. ((d))

    Visitors to the workshop

Show Answer
Answer: ((a))

The company accountant

113

The SI unit of temperature is/are _____.

  1. ((a))

    both kelvin and celsius

  2. ((b))

    fahrenheit

  3. ((c))

    celsius

  4. ((d))

    kelvin

Show Answer
Answer: ((a))

both kelvin and celsius

114

In a long-shunt compound DC generator, the shunt field winding is connected _______.

  1. ((a))

    only to the load

  2. ((b))

    between the series field and load

  3. ((c))

    in series with the armature

  4. ((d))

    in parallel with both armature and series field winding

Show Answer
Answer: ((a))

only to the load

115

Which of the following colours is commonly used for caution signs?

  1. ((a))

    Green

  2. ((b))

    Red

  3. ((c))

    Yellow

  4. ((d))

    Blue

Show Answer
Answer: ((a))

Green

116

Which of the following is the primary reason why copper is widely used as a conductor in electrical wiring? 

  1. ((a))

    Copper is abundant and inexpensive.

  2. ((b))

    Copper has low resistance and high conductivity

  3. ((c))

    Copper has high resistance to electricity. 

  4. ((d))

    Copper has a low melting point.

Show Answer
Answer: ((a))

Copper is abundant and inexpensive.

117

What is the main purpose of the field winding in a DC generator?

  1. ((a))

    To produce the required magnetic field

  2. ((b))

    To conduct load current 

  3. ((c))

    To convert AC to DC

  4. ((d))

    To reduce armature reaction

Show Answer
Answer: ((a))

To produce the required magnetic field

118

For which purpose is mineral oil provided in an oil-filled transformer? 

  1. ((a))

    Cooling purpose only 

  2. ((b))

    Both cooling and insulation purpose

  3. ((c))

    Prevent moisture 

  4. ((d))

    Insulation purpose only

Show Answer
Answer: ((a))

Cooling purpose only 

119

A voltmeter with a resistance of 10,000 ohms is connected across a circuit that has a voltage of 50 V. What is the current flowing through the voltmeter?

  1. ((a))

    4 mA

  2. ((b))

    5 mA 

  3. ((c))

    2 mA

  4. ((d))

    1 mA

Show Answer
Answer: ((a))

4 mA

120

What is the SI unit of 'volume'?

  1. ((a))

    Cubic centimetre

  2. ((b))

    Cubic metre

  3. ((c))

    Millilitres

  4. ((d))

    Litres

Show Answer
Answer: ((a))

Cubic centimetre

121

Convert 8.5% into a decimal. 

  1. ((a))

    0.85

  2. ((b))

    0.085

  3. ((c))

    8.5

  4. ((d))

    85

Show Answer
Answer: ((a))

0.85

122

How does an Earth Leakage Circuit Breaker (ELCB) work in an electrical system?

  1. ((a))

    It compares the incoming and outgoing currents to detect imbalance, indicating leakage to earth.

  2. ((b))

    It regulates the current flowing to the earth electrode.

  3. ((c))

    It detects high current flow and trips to prevent overloads. 

  4. ((d))

    It monitors the voltage drop in the system.

Show Answer
Answer: ((a))

It compares the incoming and outgoing currents to detect imbalance, indicating leakage to earth.

123

The wave set of hacksaw teeth set has a pitch of ________________. 

  1. ((a))

    1.0 mm

  2. ((b))

    2.0 mm

  3. ((c))

    0.8 mm 

  4. ((d))

    0.5 mm

Show Answer
Answer: ((a))

1.0 mm

124

Which type of line is used to represent hidden edges or surfaces in a technical drawing, as per BIS SP 46-2003? 

  1. ((a))

    Dashed thin line

  2. ((b))

    Continuous thick line

  3. ((c))

    Chain thin line 

  4. ((d))

    Continuous thin line

Show Answer
Answer: ((a))

Dashed thin line

125

Which of the following statements about title block is/are true?

Statement 1: The title block is situated in the bottom right-hand corner of the drawing sheet.

Statement 2: The contents of the title block are standardised and cannot be modified to suit individual company needs.

  1. ((a))

    Both statements are true

  2. ((b))

    Both statements are false

  3. ((c))

    Statement 1 is true, but statement 2 is false

  4. ((d))

    Statement 1 is false, but statement 2 is true 

Show Answer
Answer: ((a))

Both statements are true

126

If a DC motor fails to start, what should be checked first?

  1. ((a))

    Commutator polishing 

  2. ((b))

    Power supply connections and voltage

  3. ((c))

    Motor shaft alignment 

  4. ((d))

    Field winding resistance

Show Answer
Answer: ((a))

Commutator polishing 

127

In a four-band resistor, what does the third band represent?

  1. ((a))

    First significant digit

  2. ((b))

    Tolerance

  3. ((c))

    Second significant digit 

  4. ((d))

    Multiplier

Show Answer
Answer: ((a))

First significant digit

128

Which of the following switch types is required along with an intermediate switch to control a lamp from three or more positions? 

  1. ((a))

    Push-button switches

  2. ((b))

    One-way switches

  3. ((c))

    Dimmer switches 

  4. ((d))

    Two-way switches

Show Answer
Answer: ((a))

Push-button switches

129

Which component in a thermal relay is responsible for detecting temperature changes?

  1. ((a))

    Transformer

  2. ((b))

    Resistor

  3. ((c))

    Bimetallic element 

  4. ((d))

    Electromagnet

Show Answer
Answer: ((a))

Transformer

130

Which parameters of two identical transformers are determined using Back-to-back test?

  1. ((a))

    Efficiency and voltage regulation

  2. ((b))

    Friction loss and inductance

  3. ((c))

    Friction loss and resistance

  4. ((d))

    Mechanical loss and inductance

Show Answer
Answer: ((a))

Efficiency and voltage regulation

131

Increasing which of the following will decrease the inductance of a solenoid?

  1. ((a))

    Cross-sectional area 

  2. ((b))

    Length of the coil

  3. ((c))

    Core permeability

  4. ((d))

    Number of turns

Show Answer
Answer: ((a))

Cross-sectional area 

132

Which of the following types of chisels is used for separating metals after chain drilling?

  1. ((a))

    Cross-cut chisel

  2. ((b))

    Diamond point chisel 

  3. ((c))

    Web chisel

  4. ((d))

    Flat chisel

Show Answer
Answer: ((a))

Cross-cut chisel

133

What is the main reason for using a snubber circuit in IGBT-based circuits? 

  1. ((a))

    To protect the IGBT from voltage spikes during switching

  2. ((b))

    To minimise the switching losses 

  3. ((c))

     To reduce the gate charge

  4. ((d))

    To increase the switching speed

Show Answer
Answer: ((a))

To protect the IGBT from voltage spikes during switching

134

For your safety at work, which of the following should be ensured?

  1. All the required protective clothing and equipment are used.
  2. Training and instruction necessary for performing tasks safely have been received.
  1. ((a))

    Only statement 1 

  2. ((b))

    Neither statement 1 nor 2 

  3. ((c))

    Only statement 2

  4. ((d))

    Both statements 1 and 2

Show Answer
Answer: ((a))

Only statement 1 

135

Which of the following terms in the 5S concept refers to making a habit of maintaining the established procedures? 

  1. ((a))

    Sort

  2. ((b))

    Set

  3. ((c))

    Shine

  4. ((d))

    Sustain

Show Answer
Answer: ((a))

Sort

136

Toroidal inductors are shaped like a:

  1. ((a))

    ring

  2. ((b))

    cube

  3. ((c))

    cone

  4. ((d))

    cylinder

Show Answer
Answer: ((a))

ring

137

Which of the following is the most common application of an Earth Leakage Circuit Breaker (ELCB)?

  1. ((a))

    Detecting voltage fluctuations in the system

  2. ((b))

    Protecting high-voltage transmission lines

  3. ((c))

    Preventing electrical fires in buildings

  4. ((d))

    Protecting electrical appliances from overload

Show Answer
Answer: ((a))

Detecting voltage fluctuations in the system

138

What is the formula for the total capacitance of capacitors connected in parallel?

  1. ((a))

    1CTOTAL=1C1+1C2+1C3+…\frac{1}{C_{\text{TOTAL}}} = \frac{1}{C_1} + \frac{1}{C_2} + \frac{1}{C_3} + \dots

  2. ((b))

    CTOTAL=(C1+C2)2C_{\text{TOTAL}} = (C_1 + C_2)^2

  3. ((c))

    CTOTAL=(C1∗C2)(C1+C2)C_{\text{TOTAL}} = \frac{(C_1 * C_2)}{(C_1 + C_2)}

  4. ((d))

    CTotal=C1+C2+C3+…C_{\text{Total}} = C_1 + C_2 + C_3 + \dots

Show Answer
Answer: ((a))

1CTOTAL=1C1+1C2+1C3+…\frac{1}{C_{\text{TOTAL}}} = \frac{1}{C_1} + \frac{1}{C_2} + \frac{1}{C_3} + \dots

139

Which component(s) is/are required to obtain a proportional DC voltage for a voltage sensing relay? 

  1. ((a))

    Capacitor and diode

  2. ((b))

    Motor and generator

  3. ((c))

    Resistor and inductor

  4. ((d))

    Transformer and rectifier 

Show Answer
Answer: ((a))

Capacitor and diode

140

For a DC motor installation with explosion-proof certification, which standard must be followed for enclosure and wiring compliance? 

  1. ((a))

    NFPA 70

  2. ((b))

    ISO 9001 

  3. ((c))

    ANSI C84.1 

  4. ((d))

    IEC 60034-1

Show Answer
Answer: ((a))

NFPA 70

141

The insulation resistance of any wiring installation should NOT be less than _____ for operating voltage 1000 volt.

  1. ((a))

    100 ohm

  2. ((b))

    10 ohm

  3. ((c))

    1 mega ohm

  4. ((d))

    1 kilo ohm

Show Answer
Answer: ((a))

100 ohm

142

In a three-phase system with a line-to-line voltage of 400 V and a line current of 10 A, what is the total real power in Watt, delivered to the load if the power factor is 0.9?

  1. ((a))

    450003 W45000\sqrt{3} \text{ W}

  2. ((b))

    36003 W3600\sqrt{3} \text{ W}

  3. ((c))

    30003 W3000\sqrt{3} \text{ W}

  4. ((d))

    40003 W4000\sqrt{3} \text{ W}

Show Answer
Answer: ((a))

450003 W45000\sqrt{3} \text{ W}

143

If 50 W of power is applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is: 

  1. ((a))

    5 W

  2. ((b))

    500 W

  3. ((c))

    100 W

  4. ((d))

    50 W

Show Answer
Answer: ((a))

5 W

144

The typical switching speed of GTOs is _____.

  1. ((a))

    relatively slow

  2. ((b))

    high

  3. ((c))

    infinity

  4. ((d))

    very fast 

Show Answer
Answer: ((a))

relatively slow

145

Which of the following statements about earth resistance in context of earthing is true?

  1. ((a))

    Earth resistance does not affect electrical safety.

  2. ((b))

    Earth resistance only affects power transmission efficiency.

  3. ((c))

    Higher earth resistance increases the effectiveness of grounding. 

  4. ((d))

    Lower earth resistance improves the performance of an electrical system.

Show Answer
Answer: ((a))

Earth resistance does not affect electrical safety.

146

Which of the following statements is INCORRECT about end standard? 

  1. ((a))

    It measures the distance between two parallel flat surfaces.

  2. ((b))

    It is slower but more accurate. 

  3. ((c))

    Faces are subject to wear. 

  4. ((d))

    It is used to measure the distance between two engraved lines.

Show Answer
Answer: ((a))

It measures the distance between two parallel flat surfaces.

147

The key feature of an IGBT is that it combines the characteristics of _____.

  1. ((a))

    a diode and a transistor 

  2. ((b))

    a diode and a capacitor 

  3. ((c))

    a transistor and an amplifier

  4. ((d))

    a BJT and a MOSFET

Show Answer
Answer: ((a))

a diode and a transistor 

148

According to IEEE 80, the resistance of the ground system should be _______. 

  1. ((a))

    as high as possible to ensure efficient operation

  2. ((b))

    moderate to prevent excessive current flow 

  3. ((c))

    low enough to allow fault currents to safely dissipate into the earth

  4. ((d))

    equal to the system’s total load current

Show Answer
Answer: ((a))

as high as possible to ensure efficient operation

149

Select the INCORRECT statement with regards to a three-phase star-connected AC circuit.

  1. ((a))

    The phase voltage is higher than the line voltage. 

  2. ((b))

    The line voltage is higher than the phase voltage.

  3. ((c))

    The phase voltage is the voltage between the neutral point and any phase of the circuit. 

  4. ((d))

    The line voltage is the voltage between any two line of the circuit.

Show Answer
Answer: ((a))

The phase voltage is higher than the line voltage. 

150

When creating 10 mm single-stroke capital letters in vertical style, what does the 10 mm distance between horizontal parallel lines represent? 

  1. ((a))

    Interline spacing

  2. ((b))

    Stroke thickness

  3. ((c))

    Letter height 

  4. ((d))

    Letter width

Show Answer
Answer: ((a))

Interline spacing

151

Which DC motor is preferred in steel rolling mills and elevators?

  1. ((a))

    Permanent Magnet DC Motor

  2. ((b))

    DC Shunt Motor 

  3. ((c))

    Cumulative Compound Motor

  4. ((d))

    DC Series Motor 

Show Answer
Answer: ((a))

Permanent Magnet DC Motor

152

Which of the following metals has the lowest melting point?

  1. ((a))

    Mercury

  2. ((b))

    Gold

  3. ((c))

    Lead

  4. ((d))

    Iron

Show Answer
Answer: ((a))

Mercury

153

Apart from lamp holders, where else is a cord grip or underwriter’s knot used?

  1. ((a))

    Pull switches

  2. ((b))

    Circuit breaker panels

  3. ((c))

    High-voltage substations

  4. ((d))

    Earthing systems

Show Answer
Answer: ((a))

Pull switches

154

Which of the following best describes the working of a TRIAC?

  1. ((a))

    It is a current-controlled device. 

  2. ((b))

    It is a voltage-controlled device. 

  3. ((c))

     It is a device used to store energy.

  4. ((d))

    It switches both AC and DC currents. 

Show Answer
Answer: ((a))

It is a current-controlled device. 

155

In a series circuit, three resistors of 10 ohms, 20 ohms, and R ohms are connected in series with a 12 V battery. What is the value of resistance R if current flowing in the circuit is 0.2 A?

  1. ((a))

    10 ohms

  2. ((b))

    30 ohms

  3. ((c))

    40 ohms 

  4. ((d))

    20 ohms

Show Answer
Answer: ((a))

10 ohms

156

Match the following types of lines with their correct descriptions according to their orientation and characteristics. 

Description

A. A line that is neither parallel to a horizontal plane nor perpendicular to it.

B. A line that is perpendicular to horizontal lines.

C. A line that changes its direction continuously.

D. A line that is parallel to a horizontal plane.

Line Types:

  1. horizontal line
  2. vertical line
  3. inclined line
  4. Curved line
  1. ((a))

    A - 1, B - 2, C - 3, D - 4 

  2. ((b))

     A - 2, B - 1, C - 4, D - 3

  3. ((c))

    A - 3, B - 2, C - 4, D - 1

  4. ((d))

    A - 2, B - 3, C - 4, D - 1

Show Answer
Answer: ((a))

A - 1, B - 2, C - 3, D - 4 

157

If the length of a resistor is doubled, what happens to its resistance, assuming all other factors remain constant? 

  1. ((a))

    The resistance is doubled. 

  2. ((b))

    The resistance is halved. 

  3. ((c))

    The resistance remains the same.

  4. ((d))

    The resistance quadruples.

Show Answer
Answer: ((a))

The resistance is doubled. 

158

Which of the following calipers are used for marking lines, parallel to inside and outside edges and for locating the centre of round bars?

  1. ((a))

    Leg and point calipers

  2. ((b))

    Spring joint calipers

  3. ((c))

    Firm joint calipers

  4. ((d))

    Simple calipers

Show Answer
Answer: ((a))

Leg and point calipers

159

In electrodynamometer type synchroscope, moving coil is connected:

  1. ((a))

    in series with inductance across two phases of busbar

  2. ((b))

     in series with resistance across busbars

  3. ((c))

    between two pressure coils 

  4. ((d))

     in parallel with capacitor across terminals of incoming machines

Show Answer
Answer: ((a))

in series with inductance across two phases of busbar

160

Transformer is a _______.

  1. ((a))

    synchronous motor as a rotating transformer

  2. ((b))

    rotating device

  3. ((c))

    moving device

  4. ((d))

    static device

Show Answer
Answer: ((a))

synchronous motor as a rotating transformer

161

When passing stationary vehicles, keep a watch on ___________ who may come out suddenly from the front of the stationary vehicle. While overtaking, it should be done on the __________ side. Always keep a good _________________ between your vehicle and others. 

  1. ((a))

    pedestrians; right; distance

  2. ((b))

    vehicles; right; gap 

  3. ((c))

    drivers; left; space

  4. ((d))

    cyclists; left; interval

Show Answer
Answer: ((a))

pedestrians; right; distance

162

In a balanced three-phase system, the power delivered by the system depends on ____________.

  1. ((a))

    power factor only

  2. ((b))

    phase voltage only

  3. ((c))

    phase current only

  4. ((d))

    phase voltage, phase current and power factor

Show Answer
Answer: ((a))

power factor only

163

If inductance (L) is doubled, what happens to inductive reactance?

  1. ((a))

    It becomes zero. 

  2. ((b))

    It remains the same.

  3. ((c))

    It doubles. 

  4. ((d))

     It becomes half. 

Show Answer
Answer: ((a))

It becomes zero. 

164

Find the lateral surface area of a cube with side length 5 cm.

  1. ((a))

    125 cm² 

  2. ((b))

    200 cm²

  3. ((c))

    150 cm² 

  4. ((d))

    100 cm² 

Show Answer
Answer: ((a))

125 cm² 

165

The gate current in an ideal FET is _________.

  1. ((a))

    very high 

  2. ((b))

    equal to the drain current

  3. ((c))

    zero

  4. ((d))

    Very Low

Show Answer
Answer: ((a))

very high 

166

What is the minimum age for employment in factories or mines or other hazardous employment, according to Article 24 of the Indian Constitution? 

  1. ((a))

    12 years

  2. ((b))

    18 years

  3. ((c))

    14 years 

  4. ((d))

    16 years

Show Answer
Answer: ((a))

12 years

167

What may happen if a flexible cable in a pendant lamp is not secured with a cord grip or underwriter’s knot? 

  1. ((a))

    The lamp will consume more power.

  2. ((b))

    The cable connection may come out, leading to a shock hazard.

  3. ((c))

    The lamp will emit dim light. 

  4. ((d))

    The ceiling will overheat.

Show Answer
Answer: ((a))

The lamp will consume more power.

168

Which of the following ‘V’ blocks will have one ‘V’ groove and two grooves (slots) on either side for clamping in two positions? 

  1. ((a))

    Matched pair ‘V’ block 

  2. ((b))

    Single level double groove ‘V’ block

  3. ((c))

    Double level single groove ‘V’ block

  4. ((d))

    Single level single groove ‘V’ block

Show Answer
Answer: ((a))

Matched pair ‘V’ block 

169

According to Faraday’s law, the magnitude of induced EMF in a DC generator depends on the _______. 

  1. ((a))

    material of the conductor 

  2. ((b))

    length of the conductor only

  3. ((c))

    resistance of the conductor

  4. ((d))

    rate of change of magnetic flux

Show Answer
Answer: ((a))

material of the conductor 

170

Consider the following statements for a three phase AC circuit.

Statement 1: In a balanced three-phase system, the line current is always equal to the phase current in a star-connected load. Statement 2: In a delta-connected system, the phase voltage is equal to the line voltage.

Select the correct option based on above statements.

  1. ((a))

    Both Statement 1 and Statement 2 are false.

  2. ((b))

    Statement 1 is false, and Statement 2 is true.

  3. ((c))

    Both Statement 1 and Statement 2 are true.

  4. ((d))

    Statement 1 is true, and Statement 2 is false.

Show Answer
Answer: ((a))

Both Statement 1 and Statement 2 are false.

171

When should the measurement of electrode resistance be conducted during the installation of an earthing system?

  1. ((a))

    At the time of initial design 

  2. ((b))

    Only when the earthing system shows signs of malfunction 

  3. ((c))

    After backfilling the earth electrode

  4. ((d))

    Before backfilling the earth electrode

Show Answer
Answer: ((a))

At the time of initial design 

172

In the process of bisecting angle BAC in the given figure, why do we draw arcs from points D and E?

  1. ((a))

    To find midpoint AB

  2. ((b))

    To intersect line AC

  3. ((c))

    To mark equal lengths

  4. ((d))

    To intersect above A 

Show Answer
Answer: ((a))

To find midpoint AB

173

A 100-mm prick punch with a 7-mm diameter body could have a 2.5-mm diameter point ground to an angle of __________. 

  1. ((a))

    30°

  2. ((b))

    90°

  3. ((c))

    120°

  4. ((d))

    45°

Show Answer
Answer: ((a))

30°

174

Which of the following conditions is NOT required for parallel operation of alternator?

  1. ((a))

    They may have different frequency. 

  2. ((b))

    Prime movers of alternator should have the same speed load characteristics.

  3. ((c))

    Alternator should be of the same type.

  4. ((d))

    Alternator should be the different type

Show Answer
Answer: ((a))

They may have different frequency. 

175

In an ideal transformer, the primary and secondary windings resistance is:

  1. ((a))

    1000000 ohm 

  2. ((b))

    0 ohm

  3. ((c))

    100 ohm

  4. ((d))

    1000 ohm

Show Answer
Answer: ((a))

1000000 ohm 

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