Official Paper

RRB ALP Electronics Mechanic 21 Jan 2019 Official Paper (Shift 2) (Previous Year Paper)

175 questions · 150 minutes · with answers · free

Attempt as Timed Mock Test

Part A (100 questions)

1

Find mass (in gm) of a gold coin of radius 2 cm and thickness 0.05 cm. (Density of gold 19.3 gm/cm3)

  1. ((a))

    12.1

  2. ((b))

    0.06

  3. ((c))

    6.1

  4. ((d))

    0.03

Show Answer
Answer: ((a))

12.1

2

______ affects the atoms in living cells and thereby damages their genetic material (DNA).

  1. ((a))

    Chlorinated water

  2. ((b))

    Chloroform

  3. ((c))

    Benzene vapours

  4. ((d))

    Ionising radiation

Show Answer
Answer: ((a))

Chlorinated water

3

What is the binary equivalent of decimal 413?

  1. ((a))

    110011101

  2. ((b))

    100111111

  3. ((c))

    110110111

  4. ((d))

    111001001

Show Answer
Answer: ((a))

110011101

4

______ was discovered by the Scottish physician Daniel Rutherford in 1772.

  1. ((a))

    Helium

  2. ((b))

    Hydrogen

  3. ((c))

    Chlorine

  4. ((d))

    Nitrogen

Show Answer
Answer: ((a))

Helium

5

Find the work done (in joules) in moving a charge of 1.6 coulombs across a potential difference of 0.8 V.

  1. ((a))

    1.28

  2. ((b))

    2

  3. ((c))

    2.56

  4. ((d))

    0.5

Show Answer
Answer: ((a))

1.28

6

Who founded Project Nanhi Kali in 1996?

  1. ((a))

    Anand Mahindra

  2. ((b))

    Ratan Tata

  3. ((c))

    Narayana Murthy

  4. ((d))

    Azim Premji

Show Answer
Answer: ((a))

Anand Mahindra

7

Hawa Mahal is a palace in ______.

  1. ((a))

    Jaipur

  2. ((b))

    Jodhpur

  3. ((c))

    Bikaner

  4. ((d))

    Udaipur

Show Answer
Answer: ((a))

Jaipur

8

The difference between the two binary numbers 10010000 and 1111001 is:

  1. ((a))

    11101

  2. ((b))

    11011

  3. ((c))

    10111

  4. ((d))

    10011

Show Answer
Answer: ((a))

11101

9

A/An ______ is a pointing and drawing device shaped like a pen. It is used on a touch screen.

  1. ((a))

    stylus

  2. ((b))

    flag

  3. ((c))

    cursor

  4. ((d))

    index

Show Answer
Answer: ((a))

stylus

10

Name the author of ‘The Incredible Adventure of Professor Shonku’.

  1. ((a))

    Rahul Bose

  2. ((b))

    Ritwik Ghatak

  3. ((c))

    Rabindranath Tagore

  4. ((d))

    Satyajit Ray

Show Answer
Answer: ((a))

Rahul Bose

11

A body of mass 60 kg weighs 222 N on Mars. What is the acceleration due to gravity (in m/s2) on Mars?

  1. ((a))

    19.8

  2. ((b))

    13.32

  3. ((c))

    3.7

  4. ((d))

    4.9

Show Answer
Answer: ((a))

19.8

12

In the finals of Indian Premier League (IPL) in 2018, Chennai Super Kings played against ______.

  1. ((a))

    Royal Challengers Bangalore

  2. ((b))

    Kolkata Knight Riders

  3. ((c))

    Sun Risers Hyderabad

  4. ((d))

    Mumbai Indians

Show Answer
Answer: ((a))

Royal Challengers Bangalore

13

A drum of mass ‘m’ kg was rolled down a ramp. At the bottom of the ramp its kinetic energy was 10 kJ and velocity was 20 m/s. With what velocity (in m/s) was it pushed down the ramp if its initial kinetic energy was 625 J?

  1. ((a))

    5 m/s

  2. ((b))

    7.5 m/s

  3. ((c))

    10 m/s

  4. ((d))

    2.5 m/s

Show Answer
Answer: ((a))

5 m/s

14

A common drug in a first aid box is Ibuprofen. When should Ibuprofen be taken?

  1. ((a))

    To ease indigestion and heartburn

  2. ((b))

    To aid in clotting of blood

  3. ((c))

    To bring relief from asthma

  4. ((d))

    To treat pain, fever and inflammation

Show Answer
Answer: ((a))

To ease indigestion and heartburn

15

Classical musician TR Mahalingam is associated with which musical instrument?

  1. ((a))

    Mridangam

  2. ((b))

    Santoor

  3. ((c))

    Flute

  4. ((d))

    Tabla

Show Answer
Answer: ((a))

Mridangam

16

A car of 500 kg mass has a kinetic energy of 64 kJ. Find its speed (in m/s).

  1. ((a))

    16

  2. ((b))

    48

  3. ((c))

    64

  4. ((d))

    32

Show Answer
Answer: ((a))

16

17

The electric ______ between two points in an electric circuit carrying some current is the work done to move a unit charge from one point to the other.

  1. ((a))

    resistance

  2. ((b))

    charge

  3. ((c))

    potential difference

  4. ((d))

    current

Show Answer
Answer: ((a))

resistance

18

Coffee, spinach, onion and tea in our diet mostly provide us with which of the following elements as food?

  1. ((a))

    Fluoride

  2. ((b))

    Chloride

  3. ((c))

    Iodine

  4. ((d))

    Sodium

Show Answer
Answer: ((a))

Fluoride

19

Which organisation comprises of two institutions: The International Bank for Reconstruction and Development (IBRD) and The International Development Association (IDA)?

  1. ((a))

    International Chamber of Commerce

  2. ((b))

    The World Bank

  3. ((c))

    The International Monetary Fund

  4. ((d))

    International Finance Corporation

Show Answer
Answer: ((a))

International Chamber of Commerce

20

Find the current (in mA) flowing through a wire of resistance 25 kΩ when a potential difference of 12.5 V is applied across it.

  1. ((a))

    0.5

  2. ((b))

    2

  3. ((c))

    5

  4. ((d))

    0.2

Show Answer
Answer: ((a))

0.5

21

_______ is the fibre remaining after the extraction of the sugar-bearing juice from sugarcane.

  1. ((a))

    Forage

  2. ((b))

    Cullet

  3. ((c))

    Bagasse

  4. ((d))

    Compost

Show Answer
Answer: ((a))

Forage

22

The apparent mass of a piece of metal when fully immersed in water is 60 gm. If the relative density of this metal piece is 2.5, find its actual mass (in gm)?

  1. ((a))

    300

  2. ((b))

    40

  3. ((c))

    400

  4. ((d))

    100

Show Answer
Answer: ((a))

300

23

Which of the following folk dances is from Punjab?

  1. ((a))

    Bagurumba

  2. ((b))

    Lezim

  3. ((c))

    Nati

  4. ((d))

    Giddha

Show Answer
Answer: ((a))

Bagurumba

24

The circumference of a planet is 36,000 km. If the planet makes no other movement and takes 20 hours for one complete rotation, what is the speed of a point on its equator?

  1. ((a))

    400 m/s

  2. ((b))

    500 m/s

  3. ((c))

    200 m/s

  4. ((d))

    300 m/s

Show Answer
Answer: ((a))

400 m/s

25

200° Celsius = ______ Fahrenheit

  1. ((a))

    -73°

  2. ((b))

    -328°

  3. ((c))

    392°

  4. ((d))

    73°

Show Answer
Answer: ((a))

-73°

26

A/An ______ is a special high-speed storage mechanism.

  1. ((a))

    interface

  2. ((b))

    board

  3. ((c))

    cache

  4. ((d))

    host

Show Answer
Answer: ((a))

interface

27

Which singer entered the Guinness World Records for the most single studio recordings?

  1. ((a))

    Asha Bhosale

  2. ((b))

    Mohammad Rafi

  3. ((c))

    Lata Mangeshkar

  4. ((d))

    Kishore Kumar

Show Answer
Answer: ((a))

Asha Bhosale

28

If a box of mass 25 kg is pushed 15 m by a force of ‘F’ N and work done in the process is 480 J. Find F:

  1. ((a))

    50

  2. ((b))

    32

  3. ((c))

    16

  4. ((d))

    25

Show Answer
Answer: ((a))

50

29

Which of the following gases is NOT a major greenhouse gas that causes climate change?

  1. ((a))

    Carbon dioxide

  2. ((b))

    Methane

  3. ((c))

    Carbon monoxide

  4. ((d))

    Nitrous oxide

Show Answer
Answer: ((a))

Carbon dioxide

30

Which of the following is the correct relation between potential difference ‘V’ across a metal wire of resistivity ‘ρ’, length ‘L’, and area of cross-section ‘A’ through which a charge ‘Q’ flows in ‘t’ seconds?

  1. ((a))

    VρQ = AtL

  2. ((b))

    VLt = AQρ

  3. ((c))

    VAt = QρL

  4. ((d))

    VQt = AρL

Show Answer
Answer: ((a))

VρQ = AtL

31

Which of the following substances has the highest density?

  1. ((a))

    Gold

  2. ((b))

    Mercury

  3. ((c))

    Copper

  4. ((d))

    Iron

Show Answer
Answer: ((a))

Gold

32

Two resistors of R Ω and 20 Ω are connected in parallel to get an effective resistance of 15 Ω. Find R.

  1. ((a))

    40

  2. ((b))

    60

  3. ((c))

    50

  4. ((d))

    30

Show Answer
Answer: ((a))

40

33

The efficiency of a pump is 50%. It lifts 2 tonnes of water by 60 m in 20 minutes. Find the input power (in kW) of the pump.

  1. ((a))

    4

  2. ((b))

    1

  3. ((c))

    2

  4. ((d))

    3

Show Answer
Answer: ((a))

4

34

The ideals of Liberty, Equality and Fraternity enshrined in the Constitution of India are borrowed from the constitution of ______.

  1. ((a))

    Japan

  2. ((b))

    Unites States of America

  3. ((c))

    France

  4. ((d))

    Soviet Union

Show Answer
Answer: ((a))

Japan

35

Select the option that is related to the third word on the same basis as the second word is related to the first word.

Lawyer : Judge ∷ Teacher : ?

  1. ((a))

    Student

  2. ((b))

    Classroom

  3. ((c))

    School

  4. ((d))

    Principal

Show Answer
Answer: ((a))

Student

36

The weights of 3 boxes are 4, 5 & 11 kilograms. Which of the following CANNOT be the total weight, in kilograms, of any combination of these boxes?

  1. ((a))

    20

  2. ((b))

    16

  3. ((c))

    17

  4. ((d))

    15

Show Answer
Answer: ((a))

20

37

Select the option that is related to the third word on the same basis as the second word is related to the first word.

Sugarcane : Jaggery ∷ Coconut : ?

  1. ((a))

    Coir

  2. ((b))

    White

  3. ((c))

    Seashore

  4. ((d))

    Fruit

Show Answer
Answer: ((a))

Coir

38

E said to F, “You are my son’s wife’s father-in-law.” How is F related to E?

  1. ((a))

    F is the husband of E

  2. ((b))

    F is the wife of E

  3. ((c))

    F is the brother-in-law of E

  4. ((d))

    F is the father of E

Show Answer
Answer: ((a))

F is the husband of E

39

In the following figure, the triangle represents boxers, the square represents priests, the circle represents British and the rectangle represents men. Which set of letters represents men who are either boxers or priests?

  1. ((a))

    EFH

  2. ((b))

    CEI

  3. ((c))

    CEF

  4. ((d))

    FGH

Show Answer
Answer: ((a))

EFH

40

Here are some words from an artificial language.

Nor usi means bat wing

Od usi means bat man

Od zul means super man

Which set of letters would indicate ‘superrich’ in that artificial language?

  1. ((a))

    gifod

  2. ((b))

    nadzul

  3. ((c))

    ludnor

  4. ((d))

    tudusi

Show Answer
Answer: ((a))

gifod

41

The given Venn diagram shows the number of students in a class who play a particular sport. How many students play Hockey as well as Football?

  1. ((a))

    51

  2. ((b))

    7

  3. ((c))

    15

  4. ((d))

    8

Show Answer
Answer: ((a))

51

42

In a certain code language, STOLE is coded as 39468 and RICH is coded as 5271. Using the same code language, word THIS will be coded as:

  1. ((a))

    7583

  2. ((b))

    3274

  3. ((c))

    9283

  4. ((d))

    9123

Show Answer
Answer: ((a))

7583

43

What is the angle between the hour hand and the minute hand at quarter to five?

  1. ((a))

    135.5°

  2. ((b))

    115.5°

  3. ((c))

    147.5°

  4. ((d))

    127.5°

Show Answer
Answer: ((a))

135.5°

44

Consider that 5 # 11 = 4; 13 # 7 = 5; 10 # 22 = 8. Then what is the value of 10 # 2 = ?

  1. ((a))

    3

  2. ((b))

    8

  3. ((c))

    12

  4. ((d))

    20

Show Answer
Answer: ((a))

3

45

A statement is given, followed by two conclusions. Decide which of the given conclusions can definitely be drawn from the given statement.

Statement: Quality food is expensive. The restaurant owners are renovating the restaurant as the furniture had become old.

Conclusion:

I. The quality of the restaurant’s food will improve.

II. All restaurants have to be renovated when their furniture becomes old.

  1. ((a))

    Only conclusion I follows

  2. ((b))

    Only conclusion II follows

  3. ((c))

    Both I and II follows

  4. ((d))

    Neither I nor II follows

Show Answer
Answer: ((a))

Only conclusion I follows

46

In the question, two statements are given, followed by three conclusions I, II and III. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow(s) from the given statements.

Statement:

  1. Some huts are cabins.
  2. No cabins are cottages.

Conclusion:

I. Some cabins are huts.

II. Some cottages are huts.

III. All huts are cottages.

  1. ((a))

    Only conclusion III follows

  2. ((b))

    Only conclusion I follows

  3. ((c))

    All conclusions I, II and III follow

  4. ((d))

    Only conclusion I and III follow

Show Answer
Answer: ((a))

Only conclusion III follows

47

Rearrange the parts of the sentence in the order to form a meaningful English sentence.

Till a few years back, I used

X-used to intermingle with literature and humanism

Y-to admire at the great and insightful language used in

Z-some of the judgements of the higher judiciary, where law

  1. ((a))

    YZX

  2. ((b))

    XZY

  3. ((c))

    ZYX

  4. ((d))

    YXZ

Show Answer
Answer: ((a))

YZX

48

Choose the word that is different from the rest.

  1. ((a))

    Coir

  2. ((b))

    Cotton

  3. ((c))

    Wool

  4. ((d))

    Jute

Show Answer
Answer: ((a))

Coir

49

In the question, two statements are given, followed by two conclusions I and II. You have to consider the statements to be true even if they seem to be at variance with commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statement:

  1. All boots are sneakers.
  2. All sneakers are shoes.

Conclusion:

I. Some shoes are boots.

II. Some sneakers are boots.

  1. ((a))

    Only conclusion I follows

  2. ((b))

    Only conclusion II follows

  3. ((c))

    Both I and II follow

  4. ((d))

    Neither I nor II follows

Show Answer
Answer: ((a))

Only conclusion I follows

50

A seller starts on her daily routine. She walks 7 km north, then turns west and walks 6 km, then turns south and walks 2 km, then turns west and walks 3 km, then turns to her left and walks 5 km. Where is she now with reference to her starting position?

  1. ((a))

    3 km west

  2. ((b))

    9 km west

  3. ((c))

    3 km east

  4. ((d))

    9 km east

Show Answer
Answer: ((a))

3 km west

51

The sentences given in the question, which properly sequenced, form a coherent paragraph. Each sentence is labelled with a letter. Choose the most logical order of sentences from among the given choices to construct a coherent paragraph.

Patty the milkmaid had just finished milking her cow and had two full pails of fresh creamy milk.

A-‘Once I get the money, I'll buy a chicken’, she thought.

B-She put both pails on a stick and set off to the market to sell her pails of milk.

C-This chicken will lay tens of eggs.

D-Along the way she started to think of all the milk in her pails and all the money she would get for them.

  1. ((a))

    BDCA

  2. ((b))

    BDAC

  3. ((c))

    DBAC

  4. ((d))

    DBCA

Show Answer
Answer: ((a))

BDCA

52

If A $ B means A is the sister of B, A # B means A is the mother of B and if A × B means A is the father of B, then what does P × Q $ R # S mean?

  1. ((a))

    P is the father of S

  2. ((b))

    P is the son of S

  3. ((c))

    P is the son-in-law of S

  4. ((d))

    P is the grandfather of S

Show Answer
Answer: ((a))

P is the father of S

53

In a certain code language, ‘+’ represents ‘×’, ‘÷’ represents ‘+’, ‘-’ represents ‘÷’ and ‘×’ represents ‘-’. Find out the answer to the following question considering that language as base.

9 × 3 ÷ 4 + 10 - 8 = ?

  1. ((a))

    11

  2. ((b))

    13

  3. ((c))

    30

  4. ((d))

    12

Show Answer
Answer: ((a))

11

54

In the following question, which set of letters will logically complete the below letter series when the letters in the set are placed in the gap sequentially from left to right.

c_ax_za_cz_xc_a

  1. ((a))

    bbyyc

  2. ((b))

    bybyb

  3. ((c))

    bbyyb

  4. ((d))

    bbxyc

Show Answer
Answer: ((a))

bbyyc

55

5 years ago, father’s age was 8 times Rohan’s age. 5 years hence, the ratio of father’s age to Rohan’s age will be 10 : 3. What is Rohan’s present age?

  1. ((a))

    10 years

  2. ((b))

    12 years

  3. ((c))

    15 years

  4. ((d))

    8 years

Show Answer
Answer: ((a))

10 years

56

One statement is given followed by two assumptions, I & II. You have to consider the statement to be true, even if it seems to be at variance from commonly known facts. You are to decide which of the given assumptions is/are implicit in the given statement.

Statement: Teachers should never scold students who make repeated mistakes.

Assumptions:

I. Students do not make repeated mistakes intentionally.

II. Negative reinforcements are NOT a good method to improve student performance.

  1. ((a))

    Only assumption II is implicit

  2. ((b))

    Both I and II are implicit

  3. ((c))

    Only assumption I is implicit

  4. ((d))

    Neither I nor II is implicit

Show Answer
Answer: ((a))

Only assumption II is implicit

57

Find the missing number in the given series.

-3.4, -2.7, -2, -1.3, -0.6, ?

  1. ((a))

    0.3

  2. ((b))

    0.2

  3. ((c))

    0.1

  4. ((d))

    0

Show Answer
Answer: ((a))

0.3

58

Choose the set of letters that is different from the rest.

  1. ((a))

    NQT

  2. ((b))

    DGJ

  3. ((c))

    EHK

  4. ((d))

    TQN

Show Answer
Answer: ((a))

NQT

59

Choose the figure that is different from the rest.

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

60

Pipe A can fill a tank in X hours. Pipe B can empty it in 15 hours. If both the pipes are opened together, then the tank will be filled in 7 hours and 30 minutes. Find X.

  1. ((a))

    10

  2. ((b))

    5

  3. ((c))

    9

  4. ((d))

    8

Show Answer
Answer: ((a))

10

61

The mean of the numbers 1, 4, 9, X, 12, 14, 15 and 16 is 10. Find the mode.

  1. ((a))

    11

  2. ((b))

    10

  3. ((c))

    12

  4. ((d))

    9

Show Answer
Answer: ((a))

11

62

What is the area (in cm2) of a rhombus if the lengths of its diagonals are 18 cm and 14 cm?

  1. ((a))

    504

  2. ((b))

    63

  3. ((c))

    126

  4. ((d))

    252

Show Answer
Answer: ((a))

504

63

What is the difference between the compound interests on a sum Rs. 10,000 for 1 year at 10% per annum, when compounded yearly and half-yearly?

  1. ((a))

    Rs. 10

  2. ((b))

    Rs. 25

  3. ((c))

    Rs. 5

  4. ((d))

    Rs. 50

Show Answer
Answer: ((a))

Rs. 10

64

Two trains start at the same time. Train A travelling at an average speed of 54 km goes from city M to city N, while Train B goes from city N to city M. The distance between the two cities is 960 km. Find the average speed (in km/hr) of train B, if both trains cross each other after 8 hours?

  1. ((a))

    66

  2. ((b))

    60

  3. ((c))

    72

  4. ((d))

    76

Show Answer
Answer: ((a))

66

65

Working together, if A, B and C can finish a task in 4 days. However, after starting the task, B quits and A and C finish the remaining task in 6 days. How many days would B take to finish if he had to perform the task alone?

  1. ((a))

    9

  2. ((b))

    8

  3. ((c))

    12

  4. ((d))

    15

Show Answer
Answer: ((a))

9

66

A can finish 25% of a task in 3 days and B can finish half of the task in 18 days. If they work on it together, in how many days can they finish the task?

  1. ((a))

    12

  2. ((b))

    9

  3. ((c))

    6

  4. ((d))

    15

Show Answer
Answer: ((a))

12

67

The line graphs show the profit (in lakh rupees), for 6 years, of two companies A and B. The ratio of the cumulative profits for these 6 years of Company B to Company A is:

  1. ((a))

    7 : 3

  2. ((b))

    3 : 7

  3. ((c))

    8 : 7

  4. ((d))

    7 : 8

Show Answer
Answer: ((a))

7 : 3

68

Find the slope of the line given by the equation 4x + 6y = 9.

  1. ((a))

    −32\frac{-3}{2}

  2. ((b))

    2/3

  3. ((c))

    −23\frac{-2}{3}

  4. ((d))

    3/2

Show Answer
Answer: ((a))

−32\frac{-3}{2}

69

If 25% of a = b, then b% of 160 is same as:

  1. ((a))

    80% of a

  2. ((b))

    60% of a

  3. ((c))

    40% of a

  4. ((d))

    50% of a

Show Answer
Answer: ((a))

80% of a

70

Find the least common multiple of 48 and 54.

  1. ((a))

    144

  2. ((b))

    432

  3. ((c))

    342

  4. ((d))

    234

Show Answer
Answer: ((a))

144

71

If a + b = 9 and a2 + b2 = 53, then find the value of ab.

  1. ((a))

    20

  2. ((b))

    8

  3. ((c))

    14

  4. ((d))

    18

Show Answer
Answer: ((a))

20

72

(0.1 × 0.1 × 0.1 + 0.04 × 0.04 × 0.04) ÷ (0.2 × 0.2 × 0.2 + 0.08 × 0.08 × 0.08) = ______.

  1. ((a))

    0.08

  2. ((b))

    0.125

  3. ((c))

    0.025

  4. ((d))

    0.02

Show Answer
Answer: ((a))

0.08

73

Due to engine trouble, an Express train goes at 9/10th of its usual speed and arrives at 2 : 34 pm instead of 2 : 28 pm. At what time did it start?

  1. ((a))

    1:32 pm

  2. ((b))

    1:34 pm

  3. ((c))

    1:36 pm

  4. ((d))

    1:40 pm

Show Answer
Answer: ((a))

1:32 pm

74

The bar graph shows the marks scored by Annu and Bunty in their exam, which had 6 papers of 100 marks each. If Bunty had scored 25% less in Paper C and 10 marks more in paper A, then he would have scored how much more than Annu in the exam?

  1. ((a))

    16.67%

  2. ((b))

    10%

  3. ((c))

    12.25%

  4. ((d))

    15%

Show Answer
Answer: ((a))

16.67%

75

A trader buys 200 kg of grain for Rs. 8,000. 4% of this grain is lost in transportation. At what rate should he sell the rest to earn 20% profit?

  1. ((a))

    Rs. 45/kg

  2. ((b))

    Rs. 48/kg

  3. ((c))

    Rs. 54/kg

  4. ((d))

    Rs. 50/kg

Show Answer
Answer: ((a))

Rs. 45/kg

76

A retailer sells an item for Rs. 486 and he makes 8% profit. If he were to sell that item for Rs. 414, then he would make:

  1. ((a))

    10% loss

  2. ((b))

    8% loss

  3. ((c))

    12% loss

  4. ((d))

    4% loss

Show Answer
Answer: ((a))

10% loss

77

If the curved surface area of a cone of radius 14 cm is 2200 cm2, find its height (in cm).

  1. ((a))

    48

  2. ((b))

    56

  3. ((c))

    49

  4. ((d))

    50

Show Answer
Answer: ((a))

48

78

12 – 20% of (42 × 5 ÷ 15 – 18 × 10 ÷ 15 + 8) = ______

  1. ((a))

    8

  2. ((b))

    12

  3. ((c))

    6

  4. ((d))

    10

Show Answer
Answer: ((a))

8

79

The ratio of the present salaries of Vinod and Manoj is 6 : 7. If both of them get their salaries increased by Rs. 16,000, then the ratio becomes 8 : 9. What is the present salary of Manoj?

  1. ((a))

    Rs. 48,000

  2. ((b))

    Rs. 72,000

  3. ((c))

    Rs. 56,000

  4. ((d))

    Rs. 64,000

Show Answer
Answer: ((a))

Rs. 48,000

80

√0.015625 × √0.0256 = ?

  1. ((a))

    0.004

  2. ((b))

    0.04

  3. ((c))

    0.02

  4. ((d))

    0.002

Show Answer
Answer: ((a))

0.004

81

If 5x2−53(32+4x3)=56\frac{{5x}}{2} - \frac{5}{3}\left( {\frac{3}{2} + \frac{{4x}}{3}} \right) = \frac{5}{6}then the value of x is:

  1. ((a))

    4

  2. ((b))

    12

  3. ((c))

    3

  4. ((d))

    6

Show Answer
Answer: ((a))

4

82

A pilgrim travelled a distance of 50 km in 7.5 hours. He travelled partly on foot at 4 km/hr and partly on a bullock cart at 12 km/hr. The distance travelled on foot is ______ km.

  1. ((a))

    20

  2. ((b))

    30

  3. ((c))

    26

  4. ((d))

    24

Show Answer
Answer: ((a))

20

83

A man willed 2/7th of his wealth to his wife. 1/3rd of the remaining wealth to his son, and the rest was divided equally between the three daughters. If each daughter gets 2/3rd of the son’s share and each of the three daughters gets Rs. 2,00,000, then what was the man’s wealth?

  1. ((a))

    Rs. 8,60,000

  2. ((b))

    Rs. 10,50,000

  3. ((c))

    Rs. 12,60,000

  4. ((d))

    Rs. 15,75,000

Show Answer
Answer: ((a))

Rs. 8,60,000

84

Specific heat capacity of lead is 125 Jkg-1K-1. If the temperature of a block of 250 g of lead rises by 10°C on absorbing 5 kJ of heat, then find its heat capacity.

  1. ((a))

    250 Jkg-1K-1

  2. ((b))

    200 JK-1

  3. ((c))

    325 Jkg-1K-1

  4. ((d))

    500 JK-1

Show Answer
Answer: ((a))

250 Jkg-1K-1

85

A/an ______ circle is a circular centre line on a drawing containing the centres of holes about a common centre.

  1. ((a))

    axis

  2. ((b))

    bolt

  3. ((c))

    concentric

  4. ((d))

    peripheral

Show Answer
Answer: ((a))

axis

86

The ratio of the shorter side of an A4 sheet to the longer side of an A3 sheet is ______.

  1. ((a))

    1 : 1

  2. ((b))

    1 : √2

  3. ((c))

    1 : 4

  4. ((d))

    1 : 2

Show Answer
Answer: ((a))

1 : 1

87

Which of the following is an example of a third-class lever?

  1. ((a))

    Nut cracker

  2. ((b))

    See-saw

  3. ((c))

    Ice tongs

  4. ((d))

    Wheel barrow

Show Answer
Answer: ((a))

Nut cracker

88

If 2.5 l of hot water at 85°C is mixed with 4.5 l of cold water then the temperature of the cold water rises by 15°C when equilibrium is reached. Find the initial temperature (in °C) of the cold water assuming no heat is lost.

  1. ((a))

    25

  2. ((b))

    48

  3. ((c))

    43

  4. ((d))

    15

Show Answer
Answer: ((a))

25

89

A/an ______ is an inclined edge that is NOT at right angle to the joining surface.

  1. ((a))

    bevel

  2. ((b))

    ogee

  3. ((c))

    bullnose

  4. ((d))

    dupont

Show Answer
Answer: ((a))

bevel

90

By how many degrees celsius should an 800 g calorimeter made of aluminium be heated so that it absorbs 43.2 kJ of heat? Specific heat capacity of aluminium is 0.9 Jg-1K-1.

  1. ((a))

    42.5

  2. ((b))

    60

  3. ((c))

    120

  4. ((d))

    67.5

Show Answer
Answer: ((a))

42.5

91

_______ is the distance from the pitch circle to the bottom of the tooth space in a gear.

  1. ((a))

    Hub

  2. ((b))

    Addendum

  3. ((c))

    Dedendum

  4. ((d))

    Bore

Show Answer
Answer: ((a))

Hub

92

Find the velocity ratio of a pulley system if it has an efficiency of 50%. It lifts a load of 250 N on applying an effort of 100 N.

  1. ((a))

    2.5

  2. ((b))

    7.5

  3. ((c))

    10

  4. ((d))

    5

Show Answer
Answer: ((a))

2.5

93

The notation ϕ7 means ______.

  1. ((a))

    depth of wall 7 units

  2. ((b))

    radius 7 units

  3. ((c))

    diameter 7 units

  4. ((d))

    length of edge 7 units

Show Answer
Answer: ((a))

depth of wall 7 units

94

The specific latent heat of fusion of lead is 23 Jg-1. Find the mass of a piece of lead if it releases 2116 J of heat when it freezes at its freezing point of 327°C.

  1. ((a))

    62

  2. ((b))

    92

  3. ((c))

    600

  4. ((d))

    460

Show Answer
Answer: ((a))

62

95

Find the volume (in cm3) of a piece of metal of density 5000 kg/m3 and which weighs 10.8 N. (Use g = 10m/s2)

  1. ((a))

    216

  2. ((b))

    21.6

  3. ((c))

    54

  4. ((d))

    540

Show Answer
Answer: ((a))

216

96

A uniform meter scale weighs 75 g. It is pivoted at the 50 cm mark. A 40 g mass is placed at the 20 cm mark and a 50 g mass is placed at the 90 cm mark. Where should a 20 g mass be placed so that the scale is in equilibrium?

  1. ((a))

    At the 54 cm mark

  2. ((b))

    At the 96 cm mark

  3. ((c))

    At the 4 cm mark

  4. ((d))

    At the 10 cm mark

Show Answer
Answer: ((a))

At the 54 cm mark

97

cot 30° - 121\over2 × cosec 60° =

  1. ((a))

    23\sqrt2\over\sqrt3

  2. ((b))

    232\over3

  3. ((c))

    232\over\sqrt3

  4. ((d))

    23\sqrt2\over3

Show Answer
Answer: ((a))

23\sqrt2\over\sqrt3

98

In a certain gear train, the driver has ______ teeth while the follower has 10 teeth. For every 16 turns of the driver, the follower turns 40 times.

  1. ((a))

    15

  2. ((b))

    25

  3. ((c))

    32

  4. ((d))

    8

Show Answer
Answer: ((a))

15

99

Watt/steradian is the unit of ______.

  1. ((a))

    electric conductance

  2. ((b))

    permeability

  3. ((c))

    permittivity

  4. ((d))

    radiant intensity

Show Answer
Answer: ((a))

electric conductance

100

Siemens is the unit of ______.

  1. ((a))

    electric conductance

  2. ((b))

    permittivity

  3. ((c))

    watt per steradian

  4. ((d))

    permeability

Show Answer
Answer: ((a))

electric conductance

Part B (75 questions)

101

TRIAC is similar to

  1. ((a))

    two SCR connected in series back to back

  2. ((b))

    two diodes connected in parallel

  3. ((c))

    two SCR connected in anti-parallel

  4. ((d))

    two diodes connected in series back to back

Show Answer
Answer: ((a))

two SCR connected in series back to back

102

What is the size of internal data memory in an 8051 microcontroller?

  1. ((a))

    2048 bytes

  2. ((b))

    1024 bytes

  3. ((c))

    256 bytes

  4. ((d))

    128 bytes

Show Answer
Answer: ((a))

2048 bytes

103

How many dual-purpose ports are there in the 8051 microcontroller?

  1. ((a))

    2

  2. ((b))

    3

  3. ((c))

    4

  4. ((d))

    1

Show Answer
Answer: ((a))

2

104

By using AC coupling mode in a CRO ________.

  1. ((a))

    any signal cannot be viewed on the display

  2. ((b))

    only AC signal can be viewed on the display

  3. ((c))

    only DC signal can be viewed on the display

  4. ((d))

    both AC and DC signals can be viewed on the display

Show Answer
Answer: ((a))

any signal cannot be viewed on the display

105

Which of the following is not a type of optocoupler?

  1. ((a))

    Photo TRIAC type

  2. ((b))

    Photoresistor type

  3. ((c))

    Phototransistor type

  4. ((d))

    Photo SCR type

Show Answer
Answer: ((a))

Photo TRIAC type

106

Which of the following is used in domestic fan speed control circuits?

  1. ((a))

    DIAC

  2. ((b))

    TRIAC

  3. ((c))

    SCS

  4. ((d))

    SCR

Show Answer
Answer: ((a))

DIAC

107

Online UPS requires

  1. ((a))

    Only battery

  2. ((b))

    Both rectifier and inverter

  3. ((c))

    Only rectifier

  4. ((d))

    Only inverter

Show Answer
Answer: ((a))

Only battery

108

The ratio of root mean square value (R.M.S.) and the average value of a particular waveform is called __________ of the wave.

  1. ((a))

    Mean value

  2. ((b))

    Crest factor

  3. ((c))

    Peak factor

  4. ((d))

    Form factor

Show Answer
Answer: ((a))

Mean value

109

Which one of the gates mentioned below works as 'parity checker'?

  1. ((a))

    AND

  2. ((b))

    Ex-OR

  3. ((c))

    OR

  4. ((d))

    NAND

Show Answer
Answer: ((a))

AND

110

Optical Time domain Reflectometer is used to measure:

  1. ((a))

    Wavelength

  2. ((b))

    Dispersion in optical fibre

  3. ((c))

    Eye Pattern

  4. ((d))

    Loss in optical Communication 

Show Answer
Answer: ((a))

Wavelength

111

Which among the following is NOT the function of an Operating System?

  1. ((a))

    File Management 

  2. ((b))

    Device Management 

  3. ((c))

    Data Analysis 

  4. ((d))

    Memory Management 

Show Answer
Answer: ((a))

File Management 

112

If two ‘equal’ resistances are connected in parallel configuration, then the resultant resistance will be:

  1. ((a))

    Multiplication of both the resistances 

  2. ((b))

    Half of the resistance value 

  3. ((c))

    Double of the resistance value

  4. ((d))

    Zero

Show Answer
Answer: ((a))

Multiplication of both the resistances 

113

Which of the following rectifiers needs a ‘Centre tapped transformer’?

  1. ((a))

    Two-phase Full Wave Rectifier 

  2. ((b))

    Half Wave Rectifier 

  3. ((c))

    Full Wave Bridge Rectifier 

  4. ((d))

    Full Wave two-diode Rectifier 

Show Answer
Answer: ((a))

Two-phase Full Wave Rectifier 

114

Power loss in a transformer is known as the _____.

  1. ((a))

    Difference of current between the secondary and the primary coils.

  2. ((b))

    Addition of power in the secondary and the primary coils.

  3. ((c))

    difference of voltage between the secondary and the primary coils.

  4. ((d))

    Difference of power between the primary and the secondary coils

Show Answer
Answer: ((a))

Difference of current between the secondary and the primary coils.

115

When the LED lights need a range of voltages to operate, Which of the following drivers is best suited for the job?

  1. ((a))

    Constant frequency

  2. ((b))

    Constant Voltage

  3. ((c))

    Constant Impedance

  4. ((d))

    Constant Current

Show Answer
Answer: ((a))

Constant frequency

116

The emitter of which of the below mentioned transistors has electrons as the majority carriers?

  1. ((a))

    N Channel

  2. ((b))

    PNP

  3. ((c))

    NPN

  4. ((d))

    PNPN

Show Answer
Answer: ((a))

N Channel

117

The principle of magnetic attraction and repulsion works in:

  1. ((a))

    MI instruments

  2. ((b))

    PMMC instruments.

  3. ((c))

    Digital multimeter

  4. ((d))

    CRO

Show Answer
Answer: ((a))

MI instruments

118

The present state of the output of an SR flip flop is HIGH. If both its inputs become LOW, what would be the new state of the output?

  1. ((a))

    Unpredictable

  2. ((b))

    LOW 

  3. ((c))

    Toggles 

  4. ((d))

    HIGH

Show Answer
Answer: ((a))

Unpredictable

119

What is the purpose of using bypass diodes in the series connected solar panels?

  1. ((a))

    Increasing the current through shaded cells

  2. ((b))

    To increase the resistance of shaded cells

  3. ((c))

    ​Protection of shaded cells

  4. ((d))

    ​To redirect light for shaded cells 

Show Answer
Answer: ((a))

Increasing the current through shaded cells

120

The synchronous speed of an induction motor is 1,000 RPM. Find the percentage slip if its actual rotation speed is 980 RPM?

  1. ((a))

    4

  2. ((b))

    8

  3. ((c))

    2

  4. ((d))

    20

Show Answer
Answer: ((a))

4

121

What is the length of the antenna needed to a signal of 500 KHz frequency?

  1. ((a))

    6 km

  2. ((b))

    150 m

  3. ((c))

    600 m

  4. ((d))

    1 km

Show Answer
Answer: ((a))

6 km

122

Identify the port shown in the image below. 

  1. ((a))

    HDMI

  2. ((b))

    DVI

  3. ((c))

    MIDI

  4. ((d))

    FireWire

Show Answer
Answer: ((a))

HDMI

123

Which frequency range is used for TV?

  1. ((a))

    HF

  2. ((b))

    ULF

  3. ((c))

    VLF

  4. ((d))

    UHF

Show Answer
Answer: ((a))

HF

124

FET is a ______.

  1. ((a))

    Current and voltage controlled device

  2. ((b))

    Power controlled device 

  3. ((c))

    Voltage controlled device

  4. ((d))

    Current controlled device 

Show Answer
Answer: ((a))

Current and voltage controlled device

125

Which of the following is NOT a type of trigger in Digital storage Oscilloscope?

  1. ((a))

    Level

  2. ((b))

    Pulse Width

  3. ((c))

    Video

  4. ((d))

    Edge

Show Answer
Answer: ((a))

Level

126

Push-pull amplifiers are____________.

  1. ((a))

    Class AB amplifiers

  2. ((b))

    Class C amplifiers

  3. ((c))

    Class B amplifiers

  4. ((d))

    Class A amplifier

Show Answer
Answer: ((a))

Class AB amplifiers

127

A stable multivibrator operating at 100 Hz has a discharge time 2 ms. Find the duty cycle of the circuit 

  1. ((a))

    10%

  2. ((b))

    20%

  3. ((c))

    80%

  4. ((d))

    50%

Show Answer
Answer: ((a))

10%

128

Based on which principle does a Moving Coil meter work?

  1. ((a))

    Faraday’s Current law

  2. ((b))

    Faraday’s Voltage law

  3. ((c))

    Ohm's law

  4. ((d))

    Maxwell's law

Show Answer
Answer: ((a))

Faraday’s Current law

129

Identify the frequency of the crystal used for outgoing calls in mobile phones.

  1. ((a))

    26 MHz

  2. ((b))

    99 MHz

  3. ((c))

    108 MHz

  4. ((d))

    5.5 MHz

Show Answer
Answer: ((a))

26 MHz

130

Which one of the following can be used as a photo detector in Fiber Optic Communication?

  1. ((a))

    Tunnel diode 

  2. ((b))

    LED

  3. ((c))

    PIN diode

  4. ((d))

    LASER diode

Show Answer
Answer: ((a))

Tunnel diode 

131

Which of the following statements is true for Bi Colour LEDs?

  1. ((a))

    Two different colour LEDs are connected in series in the reverse direction 

  2. ((b))

    Two different colour LEDs are connected in series in the same direction  

  3. ((c))

    Two different colour LEDs are connected in inverse parallel

  4. ((d))

    A special dopant is used for producing two colours in on LED

Show Answer
Answer: ((a))

Two different colour LEDs are connected in series in the reverse direction 

132

Which of the following is used with LED lamps to focus its entire lighting output in one direction?

  1. ((a))

    Aluminum Channels 

  2. ((b))

    Aluminum Panels

  3. ((c))

    Parabolized Aluminum Refractor

  4. ((d))

    Parabolized Aluminum Reflector 

Show Answer
Answer: ((a))

Aluminum Channels 

133

Identify the WRONG statement from the options given below.

  1. ((a))

    In LED TV, the LEDs can be placed on the edges too.

  2. ((b))

    Both LCD and LED TVs use an LCD screen for display.

  3. ((c))

    LEDs are used for backlighting the LCD screen of LED TV.

  4. ((d))

    CFLs are used for backlighting the LCD screen of LED TV

Show Answer
Answer: ((a))

In LED TV, the LEDs can be placed on the edges too.

134

Ten cells, each of 2 volts emf and 1 ohm internal resistance are connected in series. What is the current flowing through a resistance of 10 ohms connected across this combination of cells?

  1. ((a))

    1 A

  2. ((b))

    100 mA

  3. ((c))

    1 mA

  4. ((d))

    10 mA

Show Answer
Answer: ((a))

1 A

135

Identify the main feature of power amplifiers from the options given below.

  1. ((a))

    They have voltage amplifiers in the preceding stage.

  2. ((b))

    They cannot be operated without transformers. 

  3. ((c))

    Their output voltage is high.

  4. ((d))

    Their output impedance is high.

Show Answer
Answer: ((a))

They have voltage amplifiers in the preceding stage.

136

In an Op Amp integrator circuit, what is done to, limit the gain at ‘Low Frequencies’?

  1. ((a))

    A large resistor is connected in series with the input.

  2. ((b))

    A large resistor is connected across the feedback capacitor.

  3. ((c))

    A small capacitor is connected in series with the input.

  4. ((d))

    A large capacitor is connected across the output.

Show Answer
Answer: ((a))

A large resistor is connected in series with the input.

137

The number of Flip Flops required for constructing a MOD 12 counter is_____.

  1. ((a))

    3

  2. ((b))

    6

  3. ((c))

    4

  4. ((d))

    5

Show Answer
Answer: ((a))

3

138

An Op amp has Gain Bandwidth Product of 1 MHz. At what frequency will gain of this Op amp be equal to unity? Identify from the options given below.

  1. ((a))

    100 kHz

  2. ((b))

    1000 kHz

  3. ((c))

    10 kHz

  4. ((d))

    10 MHz

Show Answer
Answer: ((a))

100 kHz

139

The primary voltage of a transformer is 200 volts and the secondary voltage is 50 volts. If the number of turns in the secondary winding is 100, the number of turns in the primary is_____.

  1. ((a))

    400

  2. ((b))

    100

  3. ((c))

    200

  4. ((d))

    800

Show Answer
Answer: ((a))

400

140

Which system allows the entire bandwidth to be available to each user at the same time?

  1. ((a))

    CSMA

  2. ((b))

    GSM

  3. ((c))

    CDMA

  4. ((d))

    FDMA

Show Answer
Answer: ((a))

CSMA

141

The IC 74LS138 is a ____.

  1. ((a))

    8 bit adder

  2. ((b))

    8 line demultiplexer

  3. ((c))

    8 bit subtractor

  4. ((d))

    8 line multiplexer

Show Answer
Answer: ((a))

8 bit adder

142

What is the peak to peak value of a sine waveform whose average value is 12.74 volts?

  1. ((a))

    40 V

  2. ((b))

    30 V

  3. ((c))

    20 V

  4. ((d))

    10 V

Show Answer
Answer: ((a))

40 V

143

Proximity sensors are used to _____.

  1. ((a))

    Detect non-magnetic but conductive materials

  2. ((b))

    Measure strain

  3. ((c))

    Measure distance

  4. ((d))

    Measure temperature

Show Answer
Answer: ((a))

Detect non-magnetic but conductive materials

144

Which one of the following instructions is used to “Move Immediate Data to Register” in 8051?

  1. ((a))

    MOV direct, Rn

  2. ((b))

    MOV Rn, #data

  3. ((c))

    MOV Rn, direct

  4. ((d))

    MOV A, Rn

Show Answer
Answer: ((a))

MOV direct, Rn

145

Refractive Index of the medium is the ratio of _____.

  1. ((a))

    Velocity of light in the medium to the Velocity of light in the vacuum

  2. ((b))

    Velocity of light in water to the velocity of light in air 

  3. ((c))

    Velocity of light in the water to the velocity of light in the vacuum

  4. ((d))

    Velocity of light in the vacuum to the velocity of light in the medium 

Show Answer
Answer: ((a))

Velocity of light in the medium to the Velocity of light in the vacuum

146

In the voltage amplifier ________.

  1. ((a))

    Output voltage is zero. 

  2. ((b))

    Output voltage is lower than the input voltage. 

  3. ((c))

    Output voltage is equal to the input voltage.

  4. ((d))

    Output voltage is larger than the input voltage. 

Show Answer
Answer: ((a))

Output voltage is zero. 

147

In mobile phones, when a user puts the phone to his/her ears, the screen goes off. Which is the sensor used for this?

  1. ((a))

    Motion sensor

  2. ((b))

    Proximity sensor

  3. ((c))

    Vibration sensor

  4. ((d))

    Temperature sensor

Show Answer
Answer: ((a))

Motion sensor

148

An LCR meter is used to measure ______.

  1. ((a))

    current

  2. ((b))

    power

  3. ((c))

    inductance

  4. ((d))

    voltage

Show Answer
Answer: ((a))

current

149

Why is the transformer of an SMPS smaller in size when compared to a transformer in a Linear power Supply of similar rating?

  1. ((a))

    Because of smaller currents 

  2. ((b))

    Because of lower PF

  3. ((c))

    Because of higher efficiency 

  4. ((d))

    Because of HF operation

Show Answer
Answer: ((a))

Because of smaller currents 

150

What is the frequency and type of modulation used in an IR Remote controls for TV?

  1. ((a))

    108.1 kHz, FM

  2. ((b))

    38 kHz, PCM

  3. ((c))

    98 kHz, PM

  4. ((d))

    98.1 MHz, AM

Show Answer
Answer: ((a))

108.1 kHz, FM

151

In the full-wave rectifier, relation between peak value and rms value is:

  1. ((a))

    Vp=4VrmsV_p=\sqrt{4} V_{rms}

  2. ((b))

    Vp=3VrmsV_p=\sqrt{3} V_{rms}

  3. ((c))

    Vp=2VrmsV_p=\sqrt{2} V_{rms}

  4. ((d))

    Vp=1.2VrmsV_p=\sqrt{1.2} V_{rms}

Show Answer
Answer: ((a))

Vp=4VrmsV_p=\sqrt{4} V_{rms}

152

Which of the following is NOT a function of the LED driver?

  1. ((a))

    Preventing damage against EMI 

  2. ((b))

    Preventing damage to LEDs by Regulating the forward voltage (VF)

  3. ((c))

    Avoiding thermal runaway 

  4. ((d))

    Delivering a constant current to the LED

Show Answer
Answer: ((a))

Preventing damage against EMI 

153

Identify the main reason why an Ammeter should have very low internal resistance

  1. ((a))

    It should provide damping

  2. ((b))

    It should decrease the circuit resistance.

  3. ((c))

    It should not affect the circuit resistance.

  4. ((d))

    It should not burn

Show Answer
Answer: ((a))

It should provide damping

154

The carrier of an AM signal has power of 1,000 Watts. If the percentage of modulation is 80, what is the power in the upper sideband? 

  1. ((a))

    800 Watts

  2. ((b))

    160 Watts

  3. ((c))

    320 Watts

  4. ((d))

    640 Watts

Show Answer
Answer: ((a))

800 Watts

155

The number of input lines in a common BCD to seven segment decoder is _____.

  1. ((a))

    8

  2. ((b))

    2

  3. ((c))

    16

  4. ((d))

    4

Show Answer
Answer: ((a))

8

156

Which of the following modulation techniques uses two carriers?

  1. ((a))

    QAM

  2. ((b))

    TDM

  3. ((c))

    FSK

  4. ((d))

    ASK

Show Answer
Answer: ((a))

QAM

157

In which frequency band does a 2GHz signal lie?

  1. ((a))

    VHF

  2. ((b))

    HF

  3. ((c))

    UHF

  4. ((d))

    EHF

Show Answer
Answer: ((a))

VHF

158

What are the logic levels in case of TTL logic using +5V as VCC?

  1. ((a))

    0 to 0.8 V for logic 0 and 2 V to VCC for logic 1

  2. ((b))

    – 0.3 to 0.3 V for logic 0 and 2.8 v to VCC for logic 1

  3. ((c))

    -0.1 to 0.6 V for logic 0 and 1.7 v to VCC for logic 1

  4. ((d))

    0 to 0.3 v for logic 0 and 0 V to VCC for logic 1

Show Answer
Answer: ((a))

0 to 0.8 V for logic 0 and 2 V to VCC for logic 1

159

Which one of the following circuits allows control of the SMPS output?

  1. ((a))

    LCL filter circuit

  2. ((b))

    PWM circuit

  3. ((c))

    EMI Filter circuit

  4. ((d))

    LC filter circuit 

Show Answer
Answer: ((a))

LCL filter circuit

160

If a JK FF toggles more than once during one clock cycle, it is called_______

  1. ((a))

    Bouncing

  2. ((b))

    Racing

  3. ((c))

    Pinging

  4. ((d))

    Spiking

Show Answer
Answer: ((a))

Bouncing

161

Which of the following connectors is used for telephone/ modem interface?

  1. ((a))

    RJ45

  2. ((b))

    RJ32

  3. ((c))

    RJ67

  4. ((d))

    RJ11

Show Answer
Answer: ((a))

RJ45

162

Which type of proximity sensor is not suitable of detecting ‘Glass Bottles’? 

  1. ((a))

    Photoelectric type

  2. ((b))

    Inductive type

  3. ((c))

    Capacitive type

  4. ((d))

    Ultrasonic type

Show Answer
Answer: ((a))

Photoelectric type

163

When a Star Delta Starter is used with 3 – phase squirrel cage motors, in which sequence is the connection made?

  1. ((a))

    First Delta, then Star modes

  2. ((b))

    First delta, then Star and again Delta modes

  3. ((c))

    First Star, then Delta modes

  4. ((d))

    First Star, then Delta and again Star mode 

Show Answer
Answer: ((a))

First Delta, then Star modes

164

Three capacitors each of 1μF, 2μF and 3μF are connected in series. Identify the statement which holds TRUE for this combination

  1. ((a))

    The charge stored by each capacitor is same.

  2. ((b))

    Current flowing through each capacitor is different

  3. ((c))

    The voltage across each capacitor is same

  4. ((d))

    Each capacitor stores a different charge

Show Answer
Answer: ((a))

The charge stored by each capacitor is same.

165

Which one of the following sensors produces a voltage output upon sensing temperature?

  1. ((a))

    RTD

  2. ((b))

    Thermocouple

  3. ((c))

    Strain gauge 

  4. ((d))

    Thermostat

Show Answer
Answer: ((a))

RTD

166

In which type of network topology computers are connected to a centralise Hub/switch

  1. ((a))

    Star topology

  2. ((b))

    Ring topology

  3. ((c))

    Bus topology

  4. ((d))

    Mesh topology

Show Answer
Answer: ((a))

Star topology

167

Which one of the following can be used to test the characteristics of an OFC?

  1. ((a))

    OTMM (Optical Transceiver Monitoring Module)

  2. ((b))

    DTDR (Digital Time Domain Reflectometer)

  3. ((c))

    OTDR (Optical Time Domain Reflectometer)

  4. ((d))

    OFCM (Optical Fiber Communication Module)

Show Answer
Answer: ((a))

OTMM (Optical Transceiver Monitoring Module)

168

In computers, some area in the memory is reserved for high speed operations and storing frequently used instructions. What is the name of this type of memory?

  1. ((a))

    Flash 

  2. ((b))

    Cache

  3. ((c))

    SRAM

  4. ((d))

    Northbridge

Show Answer
Answer: ((a))

Flash 

169

For currents as high as 2,000 Amps, which of the following types of fuses is the best choice?

  1. ((a))

    LRC Fuse

  2. ((b))

    HRC Fuse

  3. ((c))

    Nichrome Wire Fuse

  4. ((d))

    Glass Cartridge Fuse

Show Answer
Answer: ((a))

LRC Fuse

170

______ is used to describe the information about the hue and saturation of a color. 

  1. ((a))

    Phosphorescence

  2. ((b))

    Sharpness

  3. ((c))

    Chrominance

  4. ((d))

    Luminance

Show Answer
Answer: ((a))

Phosphorescence

171

The hexadecimal equivalent of the decimal number 4096 is ____.

  1. ((a))

    1000

  2. ((b))

    F100

  3. ((c))

    F0

  4. ((d))

    1F0

Show Answer
Answer: ((a))

1000

172

The Octal equivalent of the hexadecimal number 100 is _____.

  1. ((a))

    400

  2. ((b))

    600

  3. ((c))

    300

  4. ((d))

    200

Show Answer
Answer: ((a))

400

173

A PC consuming 100 Watts is to be operated on a UPS. The UPS uses a 12 Volts, 100 AH battery. Assuming unity PF, what is the backup time of this unit?

  1. ((a))

    8 hours

  2. ((b))

    16 hours

  3. ((c))

    24 hours

  4. ((d))

    12 hours

Show Answer
Answer: ((a))

8 hours

174

The deflection torque in moving iron meter is________

  1. ((a))

    Inversely proportional to square of the current

  2. ((b))

    Proportional to the square of the current

  3. ((c))

    Proportional to the square of the voltage 

  4. ((d))

    Inversely proportional to the current

Show Answer
Answer: ((a))

Inversely proportional to square of the current

175

180 Coulombs of charge passes in a given time “t” through a wire of 1 ohm when connected to a 3 V DC supply.  Identify the value of “t” from the options given

  1. ((a))

    1 Minute

  2. ((b))

    2 Minute

  3. ((c))

    1.5 Minute

  4. ((d))

    0.5 Minute

Show Answer
Answer: ((a))

1 Minute

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