Official Paper

RRB ALP Mechanic Radio & TV 23 Jan 2019 Official Paper (Shift 3) (Previous Year Paper)

175 questions · 150 minutes · with answers · free

Attempt as Timed Mock Test

Part A (100 questions)

1

Name the scientist who discovered bacteria ?

  1. ((a))

    Robert Koch

  2. ((b))

    James Chadwick

  3. ((c))

    Eugen Goldstein

  4. ((d))

    A V Leeuwenhoek

Show Answer
Answer: ((a))

Robert Koch

2

If a body has a specific gravity of less than 1, then it will float in/on ___________.

  1. ((a))

    air

  2. ((b))

    water

  3. ((c))

    liquids

  4. ((d))

    mercury

Show Answer
Answer: ((a))

air

3

Which of the following options does not have an SI base unit?

  1. ((a))

    Amount of substance

  2. ((b))

    Frequency

  3. ((c))

    Luminous intensity

  4. ((d))

    Electric current

Show Answer
Answer: ((a))

Amount of substance

4

How many medals did India win in Rio Olympics, 2016?

  1. ((a))

    3

  2. ((b))

    4

  3. ((c))

    2

  4. ((d))

    5

Show Answer
Answer: ((a))

3

5

It is mainly due to the gravitational effect of the __________ on the rotating earth that the level of water in the sea rises and falls.

  1. ((a))

    Venus

  2. ((b))

    Mercury

  3. ((c))

    Moon

  4. ((d))

    Sun

Show Answer
Answer: ((a))

Venus

6

Two resistance of 2Ω and 6Ω are connected in series and this combination is connected across a 12 V battery. Find the current in the 6Ω resistor.

  1. ((a))

    3.5 A

  2. ((b))
    1. 5 A
  3. ((c))

    0.5 A

  4. ((d))

    2.5 A

Show Answer
Answer: ((a))

3.5 A

7

Substances that are broken down by biological processes are said to be _________.

  1. ((a))

    reusable

  2. ((b))

    non-biodegradabl

  3. ((c))

    non-reusable

  4. ((d))

    biodegradable

Show Answer
Answer: ((a))

reusable

8

A software program that has been developed to harm other computers is called a/an _________.

  1. ((a))

    server

  2. ((b))

    LAN

  3. ((c))

    malware

  4. ((d))

    operating system

Show Answer
Answer: ((a))

server

9

Kuchipudi has its roots in which Indian State?

  1. ((a))

    Arunachal Pradesh

  2. ((b))

    Kerala

  3. ((c))

    Andhra Pradesh

  4. ((d))

    Himachal Pradesh

Show Answer
Answer: ((a))

Arunachal Pradesh

10

Which Indian cricketer received the Padma Bhushan in 2018?

  1. ((a))

    MS Dhoni

  2. ((b))

    Virat Kohli

  3. ((c))

    Sachin Tendulkar

  4. ((d))

    Saurav Ganguly

Show Answer
Answer: ((a))

MS Dhoni

11

JPEG stands for __________.

  1. ((a))

    Joint Program Experts Group

  2. ((b))

    Joint Program Executing Group

  3. ((c))

    Joint Photographic Experts Group

  4. ((d))

    Joint Program Experimental Group.

Show Answer
Answer: ((a))

Joint Program Experts Group

12

Two resistors, one of 12 Ω and the other of 24 Ω are connected in parallel. This combination is connected in series with a 22 Ω resistor and a 12 V battery. The current in the 12 Ω resistor is __________.

  1. ((a))

    (8/15) A

  2. ((b))

    (2/15) A

  3. ((c))

    (6/15) A

  4. ((d))

    (4/15) A

Show Answer
Answer: ((a))

(8/15) A

13

RK Narayan is famous for his book ___________.

  1. ((a))

    The Room on the Roof

  2. ((b))

    Two Livers

  3. ((c))

    Malgudi Days

  4. ((d))

    A suitable Boy

Show Answer
Answer: ((a))

The Room on the Roof

14

_________ protection must be worn whenever noise levels exceed the noise exposure standard.

  1. ((a))

    Hearing

  2. ((b))

    Head

  3. ((c))

    Eye

  4. ((d))

    Foot

Show Answer
Answer: ((a))

Hearing

15

A wire of length 1 and radius r has a resistance R. The resistance of another wire made of the same material but having half its length and half its radius will be.

  1. ((a))

    4R

  2. ((b))

    R/2

  3. ((c))

    2R

  4. ((d))

    R

Show Answer
Answer: ((a))

4R

16

Safety boots or shoes must be worn in designated areas to protect your _______  from falling objects.

  1. ((a))

    eye

  2. ((b))

    ear

  3. ((c))

    head

  4. ((d))

    feet

Show Answer
Answer: ((a))

eye

17

A cylindrical wire of length L and radius r has a resistance of R. The resistance of another wire of the same material but thrice its length and one-third its radius will be __________.

  1. ((a))

    27R

  2. ((b))

    9R

  3. ((c))

    R

  4. ((d))

    3R

Show Answer
Answer: ((a))

27R

18

If a body is NOT homogeneous, then its density is a function of its ___________.

  1. ((a))

    pressure

  2. ((b))

    acceleration

  3. ((c))

    position

  4. ((d))

    velocity

Show Answer
Answer: ((a))

pressure

19

Two resistors of 10Ω and 20 Ω area connected in series and this combination is connected across a 30 V supply voltage. Find the voltage across the 10 Ω resistor.

  1. ((a))

    20 V

  2. ((b))

    10 V

  3. ((c))

    5 V

  4. ((d))

    15 V

Show Answer
Answer: ((a))

20 V

20

Which one of these is a harvest festival? 

  1. ((a))

    Teej

  2. ((b))

    Janmashtami

  3. ((c))

    Deepawali

  4. ((d))

    Onam

Show Answer
Answer: ((a))

Teej

21

86°F is equal to __________

  1. ((a))

    20°C

  2. ((b))

    30°C

  3. ((c))

    34°C

  4. ((d))

    10°C

Show Answer
Answer: ((a))

20°C

22

Where is the Headquarters of UNESCO located?

  1. ((a))

    New York City

  2. ((b))

    Geneva

  3. ((c))

    Paris

  4. ((d))

    Washington DC

Show Answer
Answer: ((a))

New York City

23

Name of the painter of famous painting, ‘Mahishasura’.

  1. ((a))

    MF Hussain

  2. ((b))

    Amrita Sher-Gil

  3. ((c))

    Raja Ravi Verma

  4. ((d))

    Tyeb Mehta

Show Answer
Answer: ((a))

MF Hussain

24

What is the work that needs to be done to increase the speed of a 1 kg ball from 2 m/s to 4 m/s?

  1. ((a))

    8 J

  2. ((b))

    10 J

  3. ((c))

    6 J

  4. ((d))

    12 J

Show Answer
Answer: ((a))

8 J

25

The Ajanta Caves in Maharashtra feature paintings and sculptures that depict __________ tales.

  1. ((a))

    Arabic

  2. ((b))

    Islamic

  3. ((c))

    Buddhist

  4. ((d))

    Maratha

Show Answer
Answer: ((a))

Arabic

26

The volume of a given amount of water ________ between 0°C to 4°C.

  1. ((a))

    is zero

  2. ((b))

    decreases

  3. ((c))

    remains constant

  4. ((d))

    increases

Show Answer
Answer: ((a))

is zero

27

Two resistance of 2Ω and 6Ω are connected in series and this combination is connected across a 12 V  bettery. Find the power supplied by the battery.

  1. ((a))

    10 W

  2. ((b))

    18 W

  3. ((c))

    16 W

  4. ((d))

    14 W

Show Answer
Answer: ((a))

10 W

28

An object weighs X units on the earth. If we take the same object to the moon, its weight there will be ________.

  1. ((a))

    zero

  2. ((b))

    less than X

  3. ((c))

    equal to X

  4. ((d))

    more than X

Show Answer
Answer: ((a))

zero

29

A body starts from rest. Its displacement is proportional to _________ when its acceleration is constant.

  1. ((a))

    time squared

  2. ((b))

    velocity

  3. ((c))

    work

  4. ((d))

    time

Show Answer
Answer: ((a))

time squared

30

A source of voltage V maintains a current i in a circuit. The energy supplied to the circuit by the source in time t is __________.

  1. ((a))

    Vit

  2. ((b))

    1/Vit

  3. ((c))

    Vi/t

  4. ((d))

    V/it

Show Answer
Answer: ((a))

Vit

31

Who was the first governor of the Reserve Bank of India?

  1. ((a))

    Sir James Braid Taylor

  2. ((b))

    KR Puri

  3. ((c))

    HVR Iyengar

  4. ((d))

    Sir Osborne A Smith

Show Answer
Answer: ((a))

Sir James Braid Taylor

32

A car covers 400 m in 20 seconds. Find the average speed (in km/hr) of the car. 

  1. ((a))

    72

  2. ((b))

    124

  3. ((c))

    108

  4. ((d))

    36

Show Answer
Answer: ((a))

72

33

If sin θ = 15/17, then cot θ = ? 

  1. ((a))

    815\frac{8}{{15}}

  2. ((b))

    817\frac{8}{{17}}

  3. ((c))

    158\frac{{15}}{8}

  4. ((d))

    1715\frac{{17}}{{15}}

Show Answer
Answer: ((a))

815\frac{8}{{15}}

34

In an examination, the highest score and the lowest score are different by 55 and the higher one was 9/4 times the lower one. Find the lowest score.

  1. ((a))

    40  

  2. ((b))

    36

  3. ((c))

    44

  4. ((d))

    48

Show Answer
Answer: ((a))

40  

35

A number is as much greater than 50 as it is lesser than 84. What is the number?

  1. ((a))

    65

  2. ((b))

    66

  3. ((c))

    68

  4. ((d))

    67

Show Answer
Answer: ((a))

65

36

If x=125×30×6x = \sqrt {125} \times \sqrt {30} \times \sqrt 6  ,  then x is equal to:

  1. ((a))

    175

  2. ((b))

    125

  3. ((c))

    136

  4. ((d))

    150

Show Answer
Answer: ((a))

175

37

A got Rs. 80 as his share of profit where the total profit was Rs. 240 and the ratio of profit distribution between A and B was x : 2. What is the value of x? 

  1. ((a))

    1

  2. ((b))

    4

  3. ((c))

    2

  4. ((d))

    5

Show Answer
Answer: ((a))

1

38

What is the median of 8, 5, 7, 9, 11, 6, 10?

  1. ((a))

    9

  2. ((b))

    8

  3. ((c))

    10

  4. ((d))

    7

Show Answer
Answer: ((a))

9

39

If 5050 × 0.5x = 25250, then 2505 ÷ x2 = ?

  1. ((a))

    0.2505

  2. ((b))

    25.05

  3. ((c))

    2.505

  4. ((d))

    250.5

Show Answer
Answer: ((a))

0.2505

40

An article of marked price Rs. 12000 was sold. Had a discount of 15% been offered, a profit of 2% would have been made. What was the cost price?

  1. ((a))

    Rs. 10,200

  2. ((b))

    Rs. 10,000

  3. ((c))

    Rs. 11,000

  4. ((d))

    Rs. 10,800

Show Answer
Answer: ((a))

Rs. 10,200

41

A sum of Rs. 2,000 was spent in buying a pair of trousers. The sum spent was 2/5th of the total money Shashi had with her. How much was the total money she had?

  1. ((a))

    Rs. 4,000

  2. ((b))

    Rs. 4, 250 

  3. ((c))

    Rs. 4, 750

  4. ((d))

    Rs. 5,000 

Show Answer
Answer: ((a))

Rs. 4,000

42

A machine was bought for Rs. 1,500 and a repairing charge of Rs. 100 was paid afterwards. At what price should it be sold to gain a profit of 25%?

  1. ((a))

    Rs. 2,040

  2. ((b))

    Rs. 1,960

  3. ((c))

    Rs. 2,000

  4. ((d))

    Rs. 1, 920

Show Answer
Answer: ((a))

Rs. 2,040

43

In angular measurement, one radian is equivalent to ________ degree (approximately).

  1. ((a))

    65.27

  2. ((b))

    57.27

  3. ((c))

    90

  4. ((d))

    180

Show Answer
Answer: ((a))

65.27

44

A and B can do a work in 15 days. B and C can do the work in 20 days and A and C can do the work in 10 days. In how many days will they together completed the work?

  1. ((a))

    10.67 days

  2. ((b))

    10.91 days

  3. ((c))

    10.71 days

  4. ((d))

    9.23 days

Show Answer
Answer: ((a))

10.67 days

45

Pipes A and B can fill a tank in 12 minutes and 16 minutes respectively. Both A and B are opened for 4 minutes and then A is closed. How much extra time will B take to fill the tank completely?

  1. ((a))

    203\frac{{20}}{3} minutes

  2. ((b))

    7 minutes

  3. ((c))

    214\frac{{21}}{4} minutes

  4. ((d))

    6 minutes

Show Answer
Answer: ((a))

203\frac{{20}}{3} minutes

46

A can do 2/5 of a work in 10 days. B can do ½ of the some work in 10 days. They worked together for 5 days and then A left. In how many days will B finish the remaining work?

  1. ((a))

    8

  2. ((b))

    10

  3. ((c))

    11

  4. ((d))

    9

Show Answer
Answer: ((a))

8

47

Reflection of point (-2, -6) on the Y-axis is:

  1. ((a))

    (2, 6)

  2. ((b))

    (-6, -2)

  3. ((c))

    (-2, 6)

  4. ((d))

    (2, -6)

Show Answer
Answer: ((a))

(2, 6)

48

The pie chart shows the breakup in percentage of the various expenses of a Company. Study the diagram and answer the following question. 

What is the interest expense if total expenses is Rs. 25000.

  1. ((a))

    Rs. 2, 500

  2. ((b))

    Rs. 1, 800

  3. ((c))

    Rs. 9, 000

  4. ((d))

    Rs. 5, 000

Show Answer
Answer: ((a))

Rs. 2, 500

49

A motorcycle travelled 1000 m at 36 km/hr. Find the time (in seconds) taken by the motorcycle to cover this distance.

  1. ((a))

    300

  2. ((b))

    100

  3. ((c))

    400

  4. ((d))

    200

Show Answer
Answer: ((a))

300

50

A 4-digit number 1xy7 is divisible by 11. What is the value of x - y?

  1. ((a))

    -8

  2. ((b))

    -2

  3. ((c))

    -4

  4. ((d))

    -6

Show Answer
Answer: ((a))

-8

51

Tap M and N can together fill a cistern in 48/13 minutes. N alone can fill it in 6 minutes. How much time will M alone take to fill the cistern?

  1. ((a))

    9.6 minutes

  2. ((b))

    9 minutes

  3. ((c))

    9.4 minutes

  4. ((d))

    8.6 minutes

Show Answer
Answer: ((a))

9.6 minutes

52

What is the curved surface area of a hemisphere whose radius is 7 cm? (take π = 22/7)

  1. ((a))

    616 cm2

  2. ((b))

    154 cm2

  3. ((c))

    308 cm2

  4. ((d))

    924 cm2

Show Answer
Answer: ((a))

616 cm2

53

An airplane flies at the speed of 50 m/s. How much distance (in km) will it cover in a flight of 5 hours?

  1. ((a))

    895

  2. ((b))

    850

  3. ((c))

    880

  4. ((d))

    900

Show Answer
Answer: ((a))

895

54

What is the distance between the points (4, 3) and (3, -2)?

  1. ((a))

    26\sqrt {26}

  2. ((b))

    24\sqrt {24}

  3. ((c))

    6

  4. ((d))

    5

Show Answer
Answer: ((a))

26\sqrt {26}

55

sec 45° - tan 60° = ? 

  1. ((a))

    −3+2 - \sqrt 3 + \sqrt 2

  2. ((b))

    −3−2 - \sqrt 3 - \sqrt 2

  3. ((c))

    32\frac{{\sqrt 3 }}{2}

  4. ((d))

    3+2\sqrt 3 + \sqrt 2

Show Answer
Answer: ((a))

−3+2 - \sqrt 3 + \sqrt 2

56

What is the least number which when doubled is perfectly divisible by 7, 12 and 15? 

  1. ((a))

    420

  2. ((b))

    210

  3. ((c))

    214

  4. ((d))

    220

Show Answer
Answer: ((a))

420

57

A sum of Rs. 10,000 amounts to Rs. 11, 449 in 2 years, when the interest is compounded annually. The interest rate percent per annum is:

  1. ((a))

    6%

  2. ((b))

    1%

  3. ((c))

    7%

  4. ((d))

    8%

Show Answer
Answer: ((a))

6%

58

The ages of X and Y are in the ratio 4 : 7. Three years earlier, the ratio of their ages was 1 : 2. What is the difference between their current ages (Y - X)?

  1. ((a))

    3

  2. ((b))

    6

  3. ((c))

    9

  4. ((d))

    7.5

Show Answer
Answer: ((a))

3

59

What is 80% of 50% of 90?

  1. ((a))

    30

  2. ((b))

    34

  3. ((c))

    32

  4. ((d))

    36

Show Answer
Answer: ((a))

30

60

Choose the figure that is different from the rest.

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

61

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.

1.14, 1.28, 1.42, ?, 1.70, 1.84

  1. ((a))

    1.56

  2. ((b))

    1.54

  3. ((c))

    1.68

  4. ((d))

    1.62

Show Answer
Answer: ((a))

1.56

62

Two planes E and F start flying from the same point. E flies 7 km west, then turns to its left and flies 15 km. Meanwhile F flies 11 km east and turns right and flies 15 km. Where is F with respect to E?

  1. ((a))

    F is 18 km west of E

  2. ((b))

    F is 4 km east of E

  3. ((c))

    F is 18 km east of E

  4. ((d))

    F is 4 km west of E

Show Answer
Answer: ((a))

F is 18 km west of E

63

Given below are some letters, that each of these letters has a corresponding number. Select the combination of numbers from the option so that the jumbled letters arranged accordingly will form a meaningful English word.

H T R U O A

1 2 3 4 5 6

  1. ((a))

    6, 4, 2, 1, 5, 3

  2. ((b))

    3, 4, 5, 2, 1, 6

  3. ((c))

    1, 6, 2, 4, 5, 3

  4. ((d))

    2, 1, 5, 3, 4, 6

Show Answer
Answer: ((a))

6, 4, 2, 1, 5, 3

64

I, J, K and L are sitting in a row. L and I are sitting next to each other and I and K are the ends. Who is sitting next to J?

  1. ((a))

    Only K 

  2. ((b))

    L and I

  3. ((c))

    K and L

  4. ((d))

    Only L

Show Answer
Answer: ((a))

Only K 

65

Select the option that is related to the third term in the same way as the second term is related to the first term.

Tall : Short ∷ Glad : ?

  1. ((a))

    Sad

  2. ((b))

    Happy

  3. ((c))

    Emotion

  4. ((d))

    Smile

Show Answer
Answer: ((a))

Sad

66

If, ‘+’ represents ‘×’, ‘-‘ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘-‘ then find the value of the following expression.

9 × 3 + 6 ÷ 2 = ?

  1. ((a))

    20

  2. ((b))

    10

  3. ((c))

    12

  4. ((d))

    16

Show Answer
Answer: ((a))

20

67

If G + H means G is daughter of H, G- H means G is sister H and G * H means G is husband of H, which of the following shows that I is the daughter of H?

  1. ((a))

    I – J + F * H

  2. ((b))

    I + J - F * H

  3. ((c))

    I – J * F + H

  4. ((d))

    I * J - F + H

Show Answer
Answer: ((a))

I – J + F * H

68

Which of the following Venn diagrams best represents the relationship between Indians, doctors and women?

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

69

Given below are two statement, followed by two conclusion, I and II. You have to consider the statement 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: No quadrilaterals are polygons.

Statement 2: All polygons are rhombuses.

Conclusion I: Some rhombuses are quadrilaterals.

Conclusion II: Some rhombuses are polygons.

  1. ((a))

    Neither I nor II follows

  2. ((b))

    Only conclusion II follows

  3. ((c))

    Only conclusion I follows

  4. ((d))

    Both I and II follow

Show Answer
Answer: ((a))

Neither I nor II follows

70

Which two signs should be interchanged to make the given equation correct?

9 ÷ 3 + 8 × 2 – 15 = 2

  1. ((a))

    × and -

  2. ((b))

    ÷ and -

  3. ((c))
    • and ×
  4. ((d))
    • and -
Show Answer
Answer: ((a))

× and -

71

What is the minimum number of lines required to make the given image?

  1. ((a))

    13

  2. ((b))

    12

  3. ((c))

    10

  4. ((d))

    9

Show Answer
Answer: ((a))

13

72

A series is give, with one term missing. Choose the correct alternative from the given ones that will complete the series.

OOOOOX, OOOOXX, OOOXXX, OOXXXX, ?

  1. ((a))

    XXXXXX

  2. ((b))

    OOXXXXX

  3. ((c))

    OOXXXX

  4. ((d))

    OXXXXX

Show Answer
Answer: ((a))

XXXXXX

73

If C $ D means C is daughter of D, C & D means C is mother of D and C % D means C is son of D, then what does W $ X & Y % Z mean?

  1. ((a))

    Z is wife of W

  2. ((b))

    Z is mother of W

  3. ((c))

    Z is father of W

  4. ((d))

    Z is daughter of W

Show Answer
Answer: ((a))

Z is wife of W

74

Given below is a question, followed by two arguments, I and II. You have to decide which of the given arguments, if any, is a strong argument, with respect to the question.

Question: Should advertisements be banned on television?

Argument I: Yes, advertisements are immoral.

Argument II: No, advertisements bring in revenue which helps reduce cost for viewers.

  1. ((a))

    Only argument II is strong.

  2. ((b))

    Only argument I is strong.

  3. ((c))

    Neither I nor II is strong.

  4. ((d))

    Both I and II are strong.

Show Answer
Answer: ((a))

Only argument II is strong.

75

Select the option that is related to the third number in the same way as the second number is related to the first number.

-9/11 : 11/9 ∷ 13/2 : ?

  1. ((a))

    3/7

  2. ((b))

    2/13

  3. ((c))

    -2/13

  4. ((d))

    -7/3

Show Answer
Answer: ((a))

3/7

76

Given below is a statement followed by two assumption numbered I and II. You have to decide which of the assumptions is/are implicit in the statement.

Statement: The human body produces Vitamin D when exposed to sunlight.

Assumption I: The human body will have Vitamin D even if it is not consumed via food.

Assumption II: A large portion of the global population suffers from Vitamin D deficiency.

  1. ((a))

    Both I and II are implicit

  2. ((b))

    Only assumption II is implicit

  3. ((c))

    Neither I nor II is implicit

  4. ((d))

    Only assumption I is implicit

Show Answer
Answer: ((a))

Both I and II are implicit

77

A salesperson starts from his office and drives 2 km east, then turns north and drives 7 km, then turns to his right and drives 6 km, then turns south and drives 7 km. Where is he now with respect to his starting position?

  1. ((a))

    8 km east

  2. ((b))

    4 km west

  3. ((c))

    4 km east

  4. ((d))

    8 km west

Show Answer
Answer: ((a))

8 km east

78

Unscramble the letters in the words given below and find the odd word out.

  1. ((a))

    FLOW

  2. ((b))

    ILNO

  3. ((c))

    ERTIG

  4. ((d))

    WCO

Show Answer
Answer: ((a))

FLOW

79

Find the odd group of letters from the given alternatives.

  1. ((a))

    EFG

  2. ((b))

    PQR

  3. ((c))

    VWX

  4. ((d))

    HJL

Show Answer
Answer: ((a))

EFG

80

Choose the figure that is different from the rest.

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

81

In a code language, 295 means ‘water is liquid’, 549 means ‘oil is liquid’ and 824 means ‘oil on water.’ Find the code for ‘on’.

  1. ((a))

    4

  2. ((b))

    2

  3. ((c))

    8

  4. ((d))

    5

Show Answer
Answer: ((a))

4

82

In the following figure, square represents Chinese, triangle represents dancers, circle represents male and rectangle represents architects. Which set of letters represents dancers who are male?

  1. ((a))

    DEIG

  2. ((b))

    DEF

  3. ((c))

    IGH

  4. ((d))

    GEF

Show Answer
Answer: ((a))

DEIG

83

The abbreviation AC in an engineering drawing stands for __________.

  1. ((a))

    Across Corners

  2. ((b))

    Aerial Cut

  3. ((c))

    Attached Circle

  4. ((d))

    Air Conditioning

Show Answer
Answer: ((a))

Across Corners

84

Greater the value of _______ of a material, the more rapidly it will conduct heat. 

  1. ((a))

    melting point

  2. ((b))

    latent heat

  3. ((c))

    regelation

  4. ((d))

    thermal conductivity

Show Answer
Answer: ((a))

melting point

85

The effort applied to move a load is 15 units and the mechanical advantage is observed to be 3. Find the load. 

  1. ((a))

    5 units

  2. ((b))

    3 units

  3. ((c))

    15 units

  4. ((d))

    45 units

Show Answer
Answer: ((a))

5 units

86

What is the unit's digit in 366 × 641 × 753 

  1. ((a))

    8

  2. ((b))

    3

  3. ((c))

    6

  4. ((d))

    7

Show Answer
Answer: ((a))

8

87

If the width of a standard engineering drawing sheet is 841 mm, then its length would be ________ mm. 

  1. ((a))

    1189

  2. ((b))

    1250

  3. ((c))

    1000

  4. ((d))

    1216

Show Answer
Answer: ((a))

1189

88

A 200 g block of iron was heated from 30°C to 60°C. How much heat was transferred to the block (specific heat of iron is 450 Jkg-1K-1)?

  1. ((a))

    6000 J

  2. ((b))

    27 J

  3. ((c))

    2700 J

  4. ((d))

    270 J

Show Answer
Answer: ((a))

6000 J

89

If a machine overcomes a load 'L' and the distance travelled by the load is 'Ld', the work done by the load will be __________.

  1. ((a))

    L × Ld

  2. ((b))

    LLd\rm \frac{L}{Ld}

  3. ((c))

    LdL\rm \frac{Ld}{L}

  4. ((d))

    1L×Ld\rm \frac{1}{L \times Ld}

Show Answer
Answer: ((a))

L × Ld

90

A brass rod (thermal conductivity 109 J/s m K) has an area of cross section 0.04 m2 and length 20 cm. If the two end of the rod are maintained at a temperature difference of 200°C, the rate of heat flow through the rod is ________.

  1. ((a))

    3.42 kJ/s

  2. ((b))

    2.32 kJ/s

  3. ((c))

    4.36 kJ/s

  4. ((d))

    5.80 kJ/s

Show Answer
Answer: ((a))

3.42 kJ/s

91

The effort in a class 1 lever is in __________ direction(s).

  1. ((a))

    three

  2. ((b))

    multiple

  3. ((c))

    two

  4. ((d))

    one

Show Answer
Answer: ((a))

three

92

The velocity ratio of a simple machine is the ratio of distance traveled by the ________ to the distance traveled by the ________ in the machine.

  1. ((a))

    load; load

  2. ((b))

    effort; load

  3. ((c))

    load; effort

  4. ((d))

    effort; effort

Show Answer
Answer: ((a))

load; load

93

If straight lines are drawn from various points on the contour of an object to meet a plane, the figure obtained on the plane is called the _______ of the object. 

  1. ((a))

    development

  2. ((b))

    dimensioning

  3. ((c))

    projection

  4. ((d))

    animation

Show Answer
Answer: ((a))

development

94

A _______ is a theoretical exact plane, axis or point location that GD & T or dimensional tolerances are referenced to. 

  1. ((a))

    flange

  2. ((b))

    frame

  3. ((c))

    section

  4. ((d))

    datum

Show Answer
Answer: ((a))

flange

95

Molar specific heat capacity of a substance is _________.

  1. ((a))

    (1μ)(ΔQΔT)\left(\frac{1}{\mu}\right)\left( \frac{\Delta Q}{\Delta T} \right)

  2. ((b))

    μ(ΔQΔT)\mu \left( \frac{\Delta Q}{\Delta T} \right)

  3. ((c))

    (1μ)(ΔTΔQ)\left(\frac{1}{\mu}\right)\left( \frac{\Delta T}{\Delta Q} \right)

  4. ((d))

    μ(ΔTΔQ)\mu \left( \frac{\Delta T}{\Delta Q} \right)

Show Answer
Answer: ((a))

(1μ)(ΔQΔT)\left(\frac{1}{\mu}\right)\left( \frac{\Delta Q}{\Delta T} \right)

96

In engineering drawing, the letters LH signifies __________.

  1. ((a))

    Level Hide

  2. ((b))

    Left Hand

  3. ((c))

    Low Heat

  4. ((d))

    Limit of Height

Show Answer
Answer: ((a))

Level Hide

97

Identify the material having high coefficient of volume expansion. 

  1. ((a))

    Brass

  2. ((b))

    Alcohol

  3. ((c))

    Glass

  4. ((d))

    Water

Show Answer
Answer: ((a))

Brass

98

An object starts from rest at x = 0 m and moves with a constant acceleration of 1.6 m/s2 along the x-axis. During its journey from x = 12.8 m to x = 20.0 m, its average velocity will be __________.

  1. ((a))

    7.2 m/s

  2. ((b))

    3.6 m/s

  3. ((c))

    8.8 m/s

  4. ((d))

    2.4 m/s

Show Answer
Answer: ((a))

7.2 m/s

99

You are given a question and two statements. Identify which of the statements is/are necessary/sufficient to answer the question.

Question: What was the discount percent offered on the soap by the store?

Statements:

I) The store is giving 1 soap free on purchase of three.

II) Rs. 10 discount is offered on purchase of soap worth 36.

  1. ((a))

    II alone is sufficient while I alone is not sufficient

  2. ((b))

    I alone is sufficient while II alone is not sufficient

  3. ((c))

    Neither I nor II is sufficient

  4. ((d))

    Either I or II is sufficient

Show Answer
Answer: ((a))

II alone is sufficient while I alone is not sufficient

100

Identify the material having low coefficient of volume expansion 

  1. ((a))

    Iron

  2. ((b))

    Mercury

  3. ((c))

    Brass

  4. ((d))

    Aluminium

Show Answer
Answer: ((a))

Iron

Part B (75 questions)

101

A series resonant circuit consists of a resistor of 10 Ω, a capacitor of 1 μF and an inductor of 1 mH. What is the value of the current flowing through this circuit at resonance if the applied voltage is 100 V AC?

  1. ((a))

    100 mA

  2. ((b))

    1 A

  3. ((c))

    10 mA

  4. ((d))

    10 A

Show Answer
Answer: ((a))

100 mA

102

What is the name of the device that have three terminals and two layers?

  1. ((a))

    NPN transistor

  2. ((b))

    UJT

  3. ((c))

    PNP transistor

  4. ((d))

    FET

Show Answer
Answer: ((a))

NPN transistor

103

In a mixer, which control determines the amount of signal to be sent to the right or left channels?

  1. ((a))

    Equaliser

  2. ((b))

    Filter

  3. ((c))

    PAN

  4. ((d))

    Treble

Show Answer
Answer: ((a))

Equaliser

104

In which part of a cell does oxidation take place?

  1. ((a))

    Anode

  2. ((b))

    Container

  3. ((c))

    Electrolyte

  4. ((d))

    Cathode

Show Answer
Answer: ((a))

Anode

105

What are the speakers that handle the higher range of audio frequencies called?

  1. ((a))

    Tweeters

  2. ((b))

    Woofers

  3. ((c))

    Box speakers

  4. ((d))

    Bass speakers

Show Answer
Answer: ((a))

Tweeters

106

______ is the input of detector stage?

  1. ((a))

    IF signal

  2. ((b))

    RF signal

  3. ((c))

    Audio signal

  4. ((d))

    carrier wave

Show Answer
Answer: ((a))

IF signal

107

Which of the following is NOT a topology of an SMPS?

  1. ((a))

    Forward converter

  2. ((b))

    Reverse converter

  3. ((c))

    AC to DC converter

  4. ((d))

    DC to DC converter

Show Answer
Answer: ((a))

Forward converter

108

The binary equivalent of the octal number 456 is _______.

  1. ((a))

    100111101

  2. ((b))

    100101110

  3. ((c))

    101011110

  4. ((d))

    101001101

Show Answer
Answer: ((a))

100111101

109

The shape of the time base signal of a CRO is generally a ______.

  1. ((a))

    Sine Wave

  2. ((b))

    Square Wave

  3. ((c))

    Triangle Wave

  4. ((d))

    Sawtooth Wave

Show Answer
Answer: ((a))

Sine Wave

110

What is the function of a shunt resistor used for extending the range of an ammeter?

  1. ((a))

    To divide the additional voltage.

  2. ((b))

    To increase the meter resistance.

  3. ((c))

    To increase the PF.

  4. ((d))

    To bypass the additional current.

Show Answer
Answer: ((a))

To divide the additional voltage.

111

Identify the terminals in a three-point starter from the options given below.

  1. ((a))

    Line, field and armature terminals

  2. ((b))

    Line, NLR and armature terminals

  3. ((c))

    Line, field and NLR terminals

  4. ((d))

    NLR, field and armature terminals

Show Answer
Answer: ((a))

Line, field and armature terminals

112

A CRO displays a sine waveform which spans 3 cycles in 6 horizontal divisions. If the time base switch is set to 1 ms /div, what is the frequency of this signal which is being measured?

  1. ((a))

    500 Hz

  2. ((b))

    50 Hz

  3. ((c))

    20 Hz

  4. ((d))

    200 Hz

Show Answer
Answer: ((a))

500 Hz

113

If the ______ section in a TV has failed, the result is "No Sound, No Picture".

  1. ((a))

    horizontal transistor

  2. ((b))

    vertical output

  3. ((c))

    sync separator

  4. ((d))

    IF output

Show Answer
Answer: ((a))

horizontal transistor

114

In a motor speed control using TRIAC and UJT, the potentiometer controls:

  1. ((a))

    the thyristor gate current

  2. ((b))

    the gate voltage in the thyristor circuit

  3. ((c))

    the frequency of the pulses from UJT

  4. ((d))

    the thyristor anode voltage

Show Answer
Answer: ((a))

the thyristor gate current

115

In an AM with m=1, the power in one sideband is:

  1. ((a))

    one-fourth of the carrier power

  2. ((b))

    the same as the total power

  3. ((c))

    three-fourth of the total power

  4. ((d))

    one-tenth of the total power

Show Answer
Answer: ((a))

one-fourth of the carrier power

116

Reception of a station in a wrong position is caused by ______

  1. ((a))

    Defective gang condenser

  2. ((b))

    Misalignment of I.F.T

  3. ((c))

    Misalignment of antenna coil

  4. ((d))

    Oscillator coil

Show Answer
Answer: ((a))

Defective gang condenser

117

The wavelength of the laser used in a DVD player is ______.

  1. ((a))

    820 nm

  2. ((b))

    540 nm

  3. ((c))

    780 nm

  4. ((d))

    650 nm

Show Answer
Answer: ((a))

820 nm

118

Which type of loss can be reduced in a transformer by increasing the diameter of the conductor?

  1. ((a))

    Hysteresis loss

  2. ((b))

    Magnetic loss

  3. ((c))

    Copper loss

  4. ((d))

    Eddy current loss

Show Answer
Answer: ((a))

Hysteresis loss

119

The regenerative process where the collector junction temperature increases the collector current and vice versa is called _______.

  1. ((a))

    temperature stability

  2. ((b))

    positive feedback

  3. ((c))

    oscillation

  4. ((d))

    thermal runaway

Show Answer
Answer: ((a))

temperature stability

120

Which of the following statements is TRUE in case of filters used with rectifiers?

  1. ((a))

    Capacitors and inductors are both connected in series with the output.

  2. ((b))

    Capacitors and inductors are both connected in shunt with the output.

  3. ((c))

    Capacitors are connected in series and inductors in shunt with the output.

  4. ((d))

    Capacitors are connected in shunt and inductors in series with the output.

Show Answer
Answer: ((a))

Capacitors and inductors are both connected in series with the output.

121

In television, one half of horizontal pixels rows are refreshed in one cycle and the other half in the next cycle. This process is known as ______.

  1. ((a))

    sequential scanning

  2. ((b))

    alternate scanning

  3. ((c))

    interlaced scanning

  4. ((d))

    differential scanning

Show Answer
Answer: ((a))

sequential scanning

122

Which one of the following is referred to as a free one-shot circuit?

  1. ((a))

    Schmitt trigger

  2. ((b))

    Monostable 

  3. ((c))

    Astable multivibrator

  4. ((d))

    Bistable multivibrator

Show Answer
Answer: ((a))

Schmitt trigger

123

Why crystal receiver has poor selectivity?

  1. ((a))

    No loud speaker is used

  2. ((b))

    No battery is used

  3. ((c))

    it has long antenna

  4. ((d))

    No tuned circuit is used

Show Answer
Answer: ((a))

No loud speaker is used

124

______ coupling is a way to provide impedance matching in the AF amplifiers.

  1. ((a))

    Resistive

  2. ((b))

    RC

  3. ((c))

    Direct

  4. ((d))

    Transformer

Show Answer
Answer: ((a))

Resistive

125

In Silicon Controlled Rectifier (SCR):

  1. ((a))

    holding current > latching current

  2. ((b))

    holding current < latching current

  3. ((c))

    holding current = latching current

  4. ((d))

    holding current = 0.6 V/ forward resistance

Show Answer
Answer: ((a))

holding current > latching current

126

One of the criteria for oscillations to occur in an amplifier is that:

  1. ((a))

    the amplifier must have a variable power supply

  2. ((b))

    the loop gain must be slightly greater than unity

  3. ((c))

    the amplifier must be in the cut-off state

  4. ((d))

    the amplifier output impedance must be zero

Show Answer
Answer: ((a))

the amplifier must have a variable power supply

127

The basic components of an optocoupler are _______.

  1. ((a))

    LED and phototransistor

  2. ((b))

    LED and LDR

  3. ((c))

    crystal and LDR

  4. ((d))

    photodiode and crystal

Show Answer
Answer: ((a))

LED and phototransistor

128

If the height of an antenna increases, the angle of radiation ______

  1. ((a))

    Increases

  2. ((b))

    Becomes a zero

  3. ((c))

    Does not change

  4. ((d))

    Decreases

Show Answer
Answer: ((a))

Increases

129

In a transistor, identify the terminal with the highest doping from the options given below.

  1. ((a))

    Intrinsic zone

  2. ((b))

    Emitter

  3. ((c))

    Collector

  4. ((d))

    Base

Show Answer
Answer: ((a))

Intrinsic zone

130

If a receiver is able to detect and amplify even very weak signals, its _______ considered to be very good.

  1. ((a))

    fidelity

  2. ((b))

    selectivity

  3. ((c))

    bandwidth

  4. ((d))

    sensitivity

Show Answer
Answer: ((a))

fidelity

131

When two resistors of equal value are connected across a 220 V DC supply, the current through each resistor is 1 A. Find the colour code of the resistors.

  1. ((a))

    Brown, Black, Red

  2. ((b))

    Red, Red, Red

  3. ((c))

    Black, Brown, Red

  4. ((d))

    Red, Red, Brown

Show Answer
Answer: ((a))

Brown, Black, Red

132

According to Kirchoff's current law,:

  1. ((a))

    the sum of the currents entering a node = the sum of the currents leaving the node

  2. ((b))

    the sum of the potential differences across all elements = 0

  3. ((c))

    the total current is directly proportional to the applied voltage

  4. ((d))

    the sum total of all the currents in a loop = 0

Show Answer
Answer: ((a))

the sum of the currents entering a node = the sum of the currents leaving the node

133

Which of the following is NOT a type of wireless communication technology?

  1. ((a))

    Satellite communication

  2. ((b))

    OFC communication

  3. ((c))

    Bluetooth communication

  4. ((d))

    Infrared communication

Show Answer
Answer: ((a))

Satellite communication

134

A discriminator is basically a ______.

  1. ((a))

    Wein bridge oscillator

  2. ((b))

    AM modulator

  3. ((c))

    FM detector

  4. ((d))

    RS flip flop

Show Answer
Answer: ((a))

Wein bridge oscillator

135

In wave propagation, fading refers to:

  1. ((a))

    the reduction in signal strength

  2. ((b))

    the changing of the colour

  3. ((c))

    the shifting of frequency

  4. ((d))

    the changing of the wavelength

Show Answer
Answer: ((a))

the reduction in signal strength

136

The bandwidth of a TV channel in India is ______.

  1. ((a))

    7 MHz

  2. ((b))

    10.8 MHz

  3. ((c))

    5.5 MHz

  4. ((d))

    15 MHz

Show Answer
Answer: ((a))

7 MHz

137

A bridge rectifier receives its input from a 4 ∶ 1 step down transformer connected 220 V AC. Identify the PIV of the bridge rectifier from the given options.

  1. ((a))

    55 V

  2. ((b))

    141.4 V

  3. ((c))

    77.7 V

  4. ((d))

    63.6 V

Show Answer
Answer: ((a))

55 V

138

TV remote controls commonly use _______ to communicate with the TV.

  1. ((a))

    a laser diode

  2. ((b))

    Bluetooth transmitter

  3. ((c))

    Infrared LED

  4. ((d))

    UV transmitter

Show Answer
Answer: ((a))

a laser diode

139

AM broadcast transmits ______

  1. ((a))

    Carrier and lower side band

  2. ((b))

    Only side bands

  3. ((c))

    Only carrier

  4. ((d))

    Both side bands and carrier

Show Answer
Answer: ((a))

Carrier and lower side band

140

Two amplifiers each of gain 10 and 25 are cascaded. If the input voltage to the first amplifier is 10 mV, the output of the second stage will be _______.

  1. ((a))

    25 V

  2. ((b))

    2.5 V

  3. ((c))

    125 V

  4. ((d))

    100 V

Show Answer
Answer: ((a))

25 V

141

The geostationary orbit is _______ km away from the surface of the earth.

  1. ((a))

    36,000

  2. ((b))

    2,950

  3. ((c))

    38,000

  4. ((d))

    2,200

Show Answer
Answer: ((a))

36,000

142

The conductive coating on the outer surface of a picture tube is called ______.

  1. ((a))

    metal primer

  2. ((b))

    liquid conductor

  3. ((c))

    Aquadag

  4. ((d))

    enamel

Show Answer
Answer: ((a))

metal primer

143

A DVD uses the ______ method to store and read data.

  1. ((a))

    optical

  2. ((b))

    electrical

  3. ((c))

    magnetic

  4. ((d))

    Hall effect

Show Answer
Answer: ((a))

optical

144

Why FM is popular compared to the AM ______.

  1. ((a))

    Easier to generate and detect

  2. ((b))

    Requires simple transmission and reception equipment's

  3. ((c))

    Less sensitivity to noise

  4. ((d))

    Occupies less band width

Show Answer
Answer: ((a))

Easier to generate and detect

145

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

  1. ((a))

    Chrominance

  2. ((b))

    Luminance

  3. ((c))

    Contrast

  4. ((d))

    Intensity

Show Answer
Answer: ((a))

Chrominance

146

In a common-anode seven-segment display, what will be displayed if all the seven data inputs are at logic "0"?

  1. ((a))

    8

  2. ((b))

    2

  3. ((c))

    4

  4. ((d))

    0

Show Answer
Answer: ((a))

8

147

What is the full form of DTS?

  1. ((a))

    Digital Transmission Systems Format for Video

  2. ((b))

    Digital Theatre Systems Format for Video

  3. ((c))

    Digital Theatre Systems Format for Audio

  4. ((d))

    Direct Transmission for Satellite Services

Show Answer
Answer: ((a))

Digital Transmission Systems Format for Video

148

Which of the following input conditions of an SR flip flop will result in an SET condition at the output?

  1. ((a))

    R = 0, S = 0

  2. ((b))

    R = 1, S = 0

  3. ((c))

    R = 0, S = 1

  4. ((d))

    R = 1, S = 1

Show Answer
Answer: ((a))

R = 0, S = 0

149

Which stage in an AM transmitter is also known as Harmonic Generator?

  1. ((a))

    Power amplifier

  2. ((b))

    Carrier oscillator

  3. ((c))

    Frequency multiplier

  4. ((d))

    AFC circuit

Show Answer
Answer: ((a))

Power amplifier

150

In satellite communication, the downlink frequency is always _______ the uplink frequency.

  1. ((a))

    equal to

  2. ((b))

    independent of

  3. ((c))

    higher than

  4. ((d))

    lower than

Show Answer
Answer: ((a))

equal to

151

The value of the first IF in double conversion FM Radio receivers is ______.

  1. ((a))

    108 MHz

  2. ((b))

    10.7 MHz

  3. ((c))

    470 kHz

  4. ((d))

    455 kHz

Show Answer
Answer: ((a))

108 MHz

152

When a transistor is biased such that its Base current is greater than zero and its collector-to-emitter voltage is less than 0.2 V, it is operating in the ______ region.

  1. ((a))

    cut-off

  2. ((b))

    active

  3. ((c))

    breakdown

  4. ((d))

    saturation

Show Answer
Answer: ((a))

cut-off

153

In a PA system, a ______ is used to adjust the amplitude of different frequencies to achieve the desired quality of sound output.

  1. ((a))

    amplifier

  2. ((b))

    filter

  3. ((c))

    attenuator

  4. ((d))

    equalizer

Show Answer
Answer: ((a))

amplifier

154

______ electrons flow every second in ten amperes of current.

  1. ((a))

    31.4 × 108

  2. ((b))

    62.4 × 108

  3. ((c))

    31.4 × 1018

  4. ((d))

    62.4 × 1018

Show Answer
Answer: ((a))

31.4 × 108

155

A 3.1 sound system has _______.

  1. ((a))

    3 speakers and one tweeter

  2. ((b))

    only 3 speakers

  3. ((c))

    bass, treble, and speaker

  4. ((d))

    3 speakers and one subwoofer

Show Answer
Answer: ((a))

3 speakers and one tweeter

156

In an AM radio receiver, for an RF signal of 1545 kHz, the value of the local oscillator frequency will be ______.

  1. ((a))

    2,000 kHz

  2. ((b))

    455 kHz

  3. ((c))

    1,455 kHz

  4. ((d))

    2,455 kHz

Show Answer
Answer: ((a))

2,000 kHz

157

The band width of an A.M radio receiver?

  1. ((a))

    10 KHz

  2. ((b))

    1 KHz

  3. ((c))

    5 MHz

  4. ((d))

    20 KHz

Show Answer
Answer: ((a))

10 KHz

158

An ideal 220 VA step-down transformer is connected to a 220 V supply in the primary. If its turns ratio is 4 ∶ 1, then the value of the secondary current will be ______.

  1. ((a))

    11 A

  2. ((b))

    4 A

  3. ((c))

    22 A

  4. ((d))

    1 A

Show Answer
Answer: ((a))

11 A

159

What is a wave trap?

  1. ((a))

    Low pass filter

  2. ((b))

    High pass filter

  3. ((c))

    Wide band amplifier

  4. ((d))

    Resonance circuit

Show Answer
Answer: ((a))

Low pass filter

160

In a direct-coupled amplifier, the gain falls at high frequencies mainly due to ______.

  1. ((a))

    Stray capacitances

  2. ((b))

    Filtering issues

  3. ((c))

    Coupling capacitors

  4. ((d))

    Power supply

Show Answer
Answer: ((a))

Stray capacitances

161

Which of the following quantities is the same for the primary and secondary of a transformer?

  1. ((a))

    Voltage

  2. ((b))

    Phase

  3. ((c))

    Frequency

  4. ((d))

    Current

Show Answer
Answer: ((a))

Voltage

162

Which component in a TV is responsible for generating the high voltage sawtooth signals at a relatively high frequency?

  1. ((a))

    Fly back transformer

  2. ((b))

    UPS transformer

  3. ((c))

    SMPS transformer

  4. ((d))

    Isolation transformer

Show Answer
Answer: ((a))

Fly back transformer

163

When simplified, the Boolean expression A + AB results in ______.

  1. ((a))

    B

  2. ((b))

    A + 1

  3. ((c))

    AB

  4. ((d))

    A

Show Answer
Answer: ((a))

B

164

In an Op-Amp voltage regulator, the regulating element is connected:

  1. ((a))

    in series with the load

  2. ((b))

    in series with the Zener diode

  3. ((c))

    across the Zener diode

  4. ((d))

    across the load

Show Answer
Answer: ((a))

in series with the load

165

What will happen to the output voltage in a series regulator, when temperature increases?

  1. ((a))

    Equals input voltage

  2. ((b))

    Increases

  3. ((c))

    Decreases

  4. ((d))

    Remain constant

Show Answer
Answer: ((a))

Equals input voltage

166

In a microprocessor, which is the register that always holds the result of an operation?

  1. ((a))

    Instruction register

  2. ((b))

    Accumulator

  3. ((c))

    Buffer

  4. ((d))

    Data bus

Show Answer
Answer: ((a))

Instruction register

167

Identify the features of CC configuration from the options given below.

  1. ((a))

    Highest input impedance and highest current gain.

  2. ((b))

    Highest input impedance and highest voltage gain.

  3. ((c))

    Lowest input impedance and lowest voltage gain.

  4. ((d))

    Lowest input impedance and highest voltage gain.

Show Answer
Answer: ((a))

Highest input impedance and highest current gain.

168

Which one of the following does NOT affect the value of the capacitance of a parallel plate capacitor?

  1. ((a))

    Distance between the plates

  2. ((b))

    Voltage applied to the capacitor

  3. ((c))

    Surface area of the plates

  4. ((d))

    Permittivity of the dielectric used

Show Answer
Answer: ((a))

Distance between the plates

169

In an FM radio receiver, which section uses the limiter circuit at its input?

  1. ((a))

    AGC

  2. ((b))

    Detector

  3. ((c))

    AF amplifier

  4. ((d))

    Mixer

Show Answer
Answer: ((a))

AGC

170

Which of the following types of microphone requires an external power source to operate?

  1. ((a))

    Condenser microphone

  2. ((b))

    Paper microphone

  3. ((c))

    Dynamic microphone

  4. ((d))

    Ribbon microphone

Show Answer
Answer: ((a))

Condenser microphone

171

When the communication allows simultaneous talking and listening by two parties over the same channel, it is called ______.

  1. ((a))

    full duplex

  2. ((b))

    simplex

  3. ((c))

    biplex

  4. ((d))

    half duplex

Show Answer
Answer: ((a))

full duplex

172

______ is the digital 2-input logic gate whose output is HIGH only when both its inputs are the same.

  1. ((a))

    EX OR Gate

  2. ((b))

    EX NOR Gate

  3. ((c))

    AND gate

  4. ((d))

    NAND Gate

Show Answer
Answer: ((a))

EX OR Gate

173

Which type of memory needs to be regularly refreshed?

  1. ((a))

    DRAM

  2. ((b))

    ROM

  3. ((c))

    SRAM

  4. ((d))

    CMOS

Show Answer
Answer: ((a))

DRAM

174

The IC CA810 can be used as power amplifier in many applications. Which is the circuit this IC cannot be used?

  1. ((a))

    Radio receiver and tape recorders

  2. ((b))

    Television receivers

  3. ((c))

    Small PA systems

  4. ((d))

    Power driving circuits

Show Answer
Answer: ((a))

Radio receiver and tape recorders

175

An advantage of modulation is the use of ______.

  1. ((a))

    smaller antenna

  2. ((b))

    smaller circuit

  3. ((c))

    lower bandwidth

  4. ((d))

    lesser power

Show Answer
Answer: ((a))

smaller antenna

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