Official Paper

RRB ALP (Electrician) Official Paper (Held On: 22 Jan, 2019 Shift 2) (Previous Year Paper)

175 questions · 150 minutes · with answers · free

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Part A (100 questions)

1

Two workers K and L start walking from the same point. K walks 5 km North, then turns right and walks 2 km. Meanwhile, L walks 3 km West, then turns South and walks 4 km. Finally L turns left and walks 5 km. Where is K with respect to L?

  1. ((a))

    K is 1 km South of L

  2. ((b))

    K is 9 km North of L

  3. ((c))

    K is 9 km South of L

  4. ((d))

    K is 1 km North of L

Show Answer
Answer: ((a))

K is 1 km South of L

2

Which of the following Venn diagrams best represents the relationship between apples, fruits and eatables?

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

3

The sum of the present ages of a father and his son is 60 years. 5 years from now, the ratio of their ages will be 5 : 2. What is the current age of the son?

  1. ((a))

    25 years

  2. ((b))

    20 years

  3. ((c))

    15 years

  4. ((d))

    10 years

Show Answer
Answer: ((a))

25 years

4

In a certain code language, 286 means ‘egg is white’, 586 means ‘milk is white’ and 524 means ‘egg or milk’ the code for ‘or’.

  1. ((a))

    6

  2. ((b))

    5

  3. ((c))

    4

  4. ((d))

    2

Show Answer
Answer: ((a))

6

5

Read the question below followed by two statements. Based on the information, select the option that applies.

Question: How many points did A earn in the game?

Statements:

I) A won 6 times and lost 12 times.

II) Every game lost is a loss of 5 points.

  1. ((a))

    Statement II alone is sufficient while I alone is not sufficient to answer the question 

  2. ((b))

    Either statement I or II is sufficient to answer the question

  3. ((c))

    Statement I alone is sufficient while II alone is not sufficient to answer the question

  4. ((d))

    Neither Statement I nor II is sufficient to answer the question

Show Answer
Answer: ((a))

Statement II alone is sufficient while I alone is not sufficient to answer the question 

6

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 it seems to be at variance from co,,only known facts. You have to decide which of the given conclusions, if any follow(s) from the given statements.

Statement 1 : All wax are crayons.

Statement 2: Some wax are pastels.

Conclusion I: Some pastels are crayons.

Conclusion II: All crayons are pastels.

Conclusion III: No crayons are pastels.

  1. ((a))

    Only conclusion III follows

  2. ((b))

    None of the conclusions follows

  3. ((c))

    Only conclusion II follows

  4. ((d))

    Only conclusion I follows

Show Answer
Answer: ((a))

Only conclusion III follows

7

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 it seems to be at variance from commonly known facts. You have to decide which of the give conclusions, if any, follow(S) from the given statements.

Statement 1: No ties are bows.

Statement 2: All bows are silk.

Conclusion I: Some ties are silk.

Conclusion II: Some silk are bows.

  1. ((a))

    Only conclusion I follows

  2. ((b))

    Both I and II follow

  3. ((c))

    Neither I nor II follows

  4. ((d))

    Only conclusion II follows

Show Answer
Answer: ((a))

Only conclusion I follows

8

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

4.6, 5.2, 5.8, ?, 7, 7.6

  1. ((a))

    7.2

  2. ((b))

    6.8

  3. ((c))

    6.4

  4. ((d))

    6.2

Show Answer
Answer: ((a))

7.2

9

If STARCH is coded as QRYPAF, then how will END be coded as?

  1. ((a))

    QPO

  2. ((b))

    CLB

  3. ((c))

    IHG

  4. ((d))

    EDC

Show Answer
Answer: ((a))

QPO

10

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

-13/11 : 11/13 ∷ 7/5 : ?

  1. ((a))

    -13/7

  2. ((b))

    5/7

  3. ((c))

    11/7

  4. ((d))

    -5/7

Show Answer
Answer: ((a))

-13/7

11

Given below is a statement followed by tow conclusions numbered I and II. You have to assume everything in the statement to be true, then consider the two conclusions together and decide which of them logically follow(s) beyond a reasonable doubt from the information given in the statement.

Statement: A doctor doubled his fees.

Conclusion I: His revenue doubled, so the number of patients have remained the same.

Conclusion II: His revenue decreased, so the number of patients has fallen by more than half.

  1. ((a))

    Only conclusion I follows

  2. ((b))

    Both conclusions I and II follow

  3. ((c))

    Neither I nor II follows

  4. ((d))

    Only conclusion II follows

Show Answer
Answer: ((a))

Only conclusion I follows

12

Find the odd word from the given alternatives.

  1. ((a))

    Chessboard

  2. ((b))

    drum

  3. ((c))

    Compact disc

  4. ((d))

    Ball

Show Answer
Answer: ((a))

Chessboard

13

Choose the figure that is different from the rest.

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

14

Find the odd set of letters from the given alternatives.

  1. ((a))

    QOM

  2. ((b))

    GIK

  3. ((c))

    ECA

  4. ((d))

    WUS

Show Answer
Answer: ((a))

QOM

15

If E % F means E is the brother of F, E & F means E is the sister of F and E FmeansEisthedaughterofF,thenwhatdoesP F means E is the daughter of F, then what does P% Q & R S mean?

  1. ((a))

    P is the daughter of S

  2. ((b))

    S is the son of P

  3. ((c))

    S is the daughter of P

  4. ((d))

    P is the son of S

Show Answer
Answer: ((a))

P is the daughter of S

16

In a certain code language, ‘+’ represents ‘×’, ‘-‘ represents ‘+’, ‘×’ represents ‘÷’,‘ ÷’ represents ‘ -‘. Find out the answer to the following expression in that code language.

8 – 4 × 2 + 6 = ?

  1. ((a))

    10

  2. ((b))

    12

  3. ((c))

    20

  4. ((d))

    18

Show Answer
Answer: ((a))

10

17

If I + J means I is the father of J; I – J means I is the son-in-law of J; and I * J means I is the wife of J, then which of the following shows that F is the brother of C, considering that C has only one sibling?

  1. ((a))

    C + D – E * F

  2. ((b))

    C * D – E + F

  3. ((c))

    C – E * D + F

  4. ((d))

    C + E – D * F

Show Answer
Answer: ((a))

C + D – E * F

18

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

Liquid : Oil ∷ Gas : ?

  1. ((a))

    Phase

  2. ((b))

    Fuel

  3. ((c))

    Air

  4. ((d))

    Solid

Show Answer
Answer: ((a))

Phase

19

In the following figure, square represents Nurses, triangle represents cyclists, circle represents bachelors and rectangle represents Americans. Which set of letters represents Americans who are bachelors?

  1. ((a))

    LJ

  2. ((b))

    DGF

  3. ((c))

    IK

  4. ((d))

    JHI

Show Answer
Answer: ((a))

LJ

20

Choose the figure that is different from the rest.

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

21

Which two mathematical symbols need to be interchanged to correct the below equation?

9 + 3 × 2 – 8 ÷ 4 = 8

  1. ((a))

    ÷ and ×

  2. ((b))

    ÷ and +

  3. ((c))

    × and -

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

÷ and ×

22

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

  1. ((a))

    10

  2. ((b))

    12

  3. ((c))

    9

  4. ((d))

    11

Show Answer
Answer: ((a))

10

23

U, V, W, and X are sitting around a round table. V is sitting next to X. W is facing V. U is to the right of W. Which statement is false?

  1. ((a))

    X is between W and V

  2. ((b))

    X is to the left of V

  3. ((c))

    V is between U and X

  4. ((d))

    V is to the right of U

Show Answer
Answer: ((a))

X is between W and V

24

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

UTS, QPO, MLK, IHG,?

  1. ((a))

    EDC

  2. ((b))

    FED

  3. ((c))

    GFE

  4. ((d))

    DCB

Show Answer
Answer: ((a))

EDC

25

Four 100 Ω resistors are connected in parallel and this combination is connected across a 100 V supply voltage. Find the power dissipation in each resistor.

  1. ((a))

    100 W

  2. ((b))

    200 W

  3. ((c))

    400 W

  4. ((d))

    300 W

Show Answer
Answer: ((a))

100 W

26

Name the writer of the Book “One life is not Enough”

  1. ((a))

    Karan Singh

  2. ((b))

    Shashi Tharoor

  3. ((c))

    Natwar Singh

  4. ((d))

    Mani Shankar Aiyar

Show Answer
Answer: ((a))

Karan Singh

27

The electric current flowing through a metallic wire is directly proportional to the potential difference V across its ends, provided its _____ remains the same.

  1. ((a))

    voltage

  2. ((b))

    energy

  3. ((c))

    charge

  4. ((d))

    temperature

Show Answer
Answer: ((a))

voltage

28

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 24 Ω resistor is:

  1. ((a))

    (8/15)A

  2. ((b))

    (6/15)A

  3. ((c))

    (2/15)A

  4. ((d))

    (4/15)A

Show Answer
Answer: ((a))

(8/15)A

29

A concrete wall of thickness 15 cm has inside temperature 25°C and outside temperature 5°C. The rate of heat loss through per square metre of the wall (thermal conductivity 0.81 J/(s m K)) is:

  1. ((a))

    54 J/s

  2. ((b))

    163 J/s

  3. ((c))

    120 J/s

  4. ((d))

    108 J/s

Show Answer
Answer: ((a))

54 J/s

30

How much work is done in moving a charge of 10 C across two points having a potential difference 20 V?

  1. ((a))

    10 J

  2. ((b))

    200 J

  3. ((c))

    2 J

  4. ((d))

    0.5 J

Show Answer
Answer: ((a))

10 J

31

If the total energy of the reactants is more than the products of the reaction, heat is released and the reaction is said to be a/an ____ reaction.

  1. ((a))

    exothermic

  2. ((b))

    potential

  3. ((c))

    endothermic

  4. ((d))

    work

Show Answer
Answer: ((a))

exothermic

32

Copper expands about _____ times more than glass for the same rise in the temperature.

  1. ((a))

    six

  2. ((b))

    three

  3. ((c))

    four

  4. ((d))

    five

Show Answer
Answer: ((a))

six

33

If an object has a mass of 100 kg on Earth, what would be its mass on the Moon?

  1. ((a))

    0 kg

  2. ((b))

    100 kg

  3. ((c))

    16.7 kg

  4. ((d))

    980 kg

Show Answer
Answer: ((a))

0 kg

34

Which of these is the top apple producing country of the world?

  1. ((a))

    China

  2. ((b))

    Poland

  3. ((c))

    United Kingdom

  4. ((d))

    united States

Show Answer
Answer: ((a))

China

35

The actual weight of a person is determined by his:

  1. ((a))

    Mass and width

  2. ((b))

    Mass

  3. ((c))

    Mass and height

  4. ((d))

    Mass and the acceleration due to gravity

Show Answer
Answer: ((a))

Mass and width

36

When did the Constituent Assembly of India meet for the first time?

  1. ((a))

    9th December 1946

  2. ((b))

    19th December 1946

  3. ((c))

    26th November 1956

  4. ((d))

    26th December 1946

Show Answer
Answer: ((a))

9th December 1946

37

An object starts moving from rest, with constant acceleration. Its velocity is:

  1. ((a))

    Inversely proportional to time

  2. ((b))

    directly proportional to time

  3. ((c))

    Inversely proportional to time square

  4. ((d))

    Directly proportional to time square

Show Answer
Answer: ((a))

Inversely proportional to time

38

The boiling and freezing points of water are exactly _____ degrees apart on the Fahrenheit scale.

  1. ((a))

    180

  2. ((b))

    273

  3. ((c))

    100

  4. ((d))

    50

Show Answer
Answer: ((a))

180

39

An object starts from rest at x= 0 and t = 0. It moves with a constant acceleration of 3m/s2 along the x-axis. What is its average velocity between time 4 s to 8 s?

  1. ((a))

    12 m/s

  2. ((b))

    3 m/s

  3. ((c))

    6 m/s

  4. ((d))

    18 m/s

Show Answer
Answer: ((a))

12 m/s

40

Three resistors, 9Ω, 9 Ω and X Ω, are connected in parallel. Total resistance of this parallel combination is 3 Ω. Find the unknown resistance X Ω.

  1. ((a))

    12 Ω

  2. ((b))

    3 Ω

  3. ((c))

    6 Ω

  4. ((d))

    9 Ω

Show Answer
Answer: ((a))

12 Ω

41

Identify the one that is not a Class 1 lever.

  1. ((a))

    Scissors

  2. ((b))

    Pliers

  3. ((c))

    See-saw

  4. ((d))

    Nut cracker

Show Answer
Answer: ((a))

Scissors

42

Which mountain has the highest elevation in the African continent?

  1. ((a))

    Mt. Everest

  2. ((b))

    Mt. Elbrus

  3. ((c))

    Mt. Kosciusko

  4. ((d))

    Mt. Kilimanjaro

Show Answer
Answer: ((a))

Mt. Everest

43

A file, which is to archive and compress them into one file of smaller size using a program is called as ____.

  1. ((a))

    SSL

  2. ((b))

    ZIP

  3. ((c))

    SAAS

  4. ((d))

    SEO

Show Answer
Answer: ((a))

SSL

44

What is the approximate percentage of India’s populations as a proportion of the world population as of 2018?

  1. ((a))

    18%

  2. ((b))

    8%

  3. ((c))

    12%

  4. ((d))

    10%

Show Answer
Answer: ((a))

18%

45

“Gudi Padwa” is an auspicious day that marks the beginning of the traditional New Year for Marathi Hindus. Which Hindu month is it celebrated in?

  1. ((a))

    Vaisakha

  2. ((b))

    Bhadra

  3. ((c))

    Shravana

  4. ((d))

    Chaitra

Show Answer
Answer: ((a))

Vaisakha

46

Who was the first Indian to receive a Noble Prize?

  1. ((a))

    Rabindranath Tagore

  2. ((b))

    C V Raman

  3. ((c))

    Mother Teresa

  4. ((d))

    Amartya Sen

Show Answer
Answer: ((a))

Rabindranath Tagore

47

Where is the headquarters of the World Wide Fund for Nature?

  1. ((a))

    Germany

  2. ((b))

    Switzerland

  3. ((c))

    Austria

  4. ((d))

    France

Show Answer
Answer: ((a))

Germany

48

The abbreviation SR marked on an engineering drawing stands for:

  1. ((a))

    Screw Runner

  2. ((b))

    Spherical Radius

  3. ((c))

    Sectional Recess

  4. ((d))

    Surface Relief

Show Answer
Answer: ((a))

Screw Runner

49

Work done will be maximum when the angle between the direction of force and the direction of direction of displacement is

  1. ((a))

    0°

  2. ((b))

    45°

  3. ((c))

    60°

  4. ((d))

    90°

Show Answer
Answer: ((a))

0°

50

Water has the maximum density at ______ °C.

  1. ((a))

    4

  2. ((b))

    22

  3. ((c))

    2

  4. ((d))

    0

Show Answer
Answer: ((a))

4

51

The rate of change of velocity of an object is constant. Its average velocity is:

  1. ((a))

    The product of the initial and final velocity

  2. ((b))

    Half of the difference of the final and initial velocity

  3. ((c))

    Half of the sum of the initial and final velocity

  4. ((d))

    The sum of the initial and final velocity

Show Answer
Answer: ((a))

The product of the initial and final velocity

52

Al-Haram Mosque is the largest mosque in the world. It is situated in:

  1. ((a))

    Batna

  2. ((b))

    Jerusalem

  3. ((c))

    Medina

  4. ((d))

    Mecca

Show Answer
Answer: ((a))

Batna

53

A wire carries a steady current of 0.2 A for a period of 10 s. The total charge that passes through the wire in this time interval is:

  1. ((a))

    0.02 C

  2. ((b))

    50 C

  3. ((c))

    20 C

  4. ((d))

    2.0 C

Show Answer
Answer: ((a))

0.02 C

54

A ball of mass m is dropped from a height H. At height H/3, the ratio of its potential energy (PE) to kinetic energy (KE) is equal to:

  1. ((a))

    1/4

  2. ((b))

    1

  3. ((c))

    1/3

  4. ((d))

    1/2

Show Answer
Answer: ((a))

1/4

55

The Ideal-gas equation is ______.

  1. ((a))

    PV/T = μR

  2. ((b))

    V/T = (1/μ) R

  3. ((c))

    P/VT = μR

  4. ((d))

    T/PV = μR

Show Answer
Answer: ((a))

PV/T = μR

56

A piece of programming code inserted into another program to cause damage is called:

  1. ((a))

    Virus

  2. ((b))

    Malware

  3. ((c))

    Spam

  4. ((d))

    Viral

Show Answer
Answer: ((a))

Virus

57

A 50 g block of copper is heated from 20°C to 60°C. How much heat is transferred to the block (specific heat of copper 386 Jkg-1 K-1)

  1. ((a))

    320 J

  2. ((b))

    772 J

  3. ((c))

    852 J

  4. ((d))

    572 J

Show Answer
Answer: ((a))

320 J

58

Alexander Fleming is best known for the discovery of:

  1. ((a))

    Penicillin

  2. ((b))

    Proton

  3. ((c))

    Bacteria

  4. ((d))

    X rays

Show Answer
Answer: ((a))

Penicillin

59

Identify the material having the highest coefficient of volume expansion.

  1. ((a))

    Brass

  2. ((b))

    Hard rubber

  3. ((c))

    Mercury

  4. ((d))

    Iron

Show Answer
Answer: ((a))

Brass

60

The relative density of gold is 19.3 Its density in SI unit is:

  1. ((a))

    1.93 × 102 kg/m3

  2. ((b))

    19.3 kg/m3

  3. ((c))

    19.3 × 103 kg/m3

  4. ((d))

    19.3 × 102 kg/m3

Show Answer
Answer: ((a))

1.93 × 102 kg/m3

61

Which statement with regard to Class 3 lever is true?

  1. ((a))

    The fulcrum is between the load and the effort

  2. ((b))

    The effort is between the load and the fulcrum

  3. ((c))

    The load is in between the effort and the fulcrum

  4. ((d))

    The fulcrum is near the effort

Show Answer
Answer: ((a))

The fulcrum is between the load and the effort

62

18% of 90% of 500 = ?

  1. ((a))

    79

  2. ((b))

    80

  3. ((c))

    81

  4. ((d))

    78

Show Answer
Answer: ((a))

79

63

If 138.21 + 146.24 + 213.82 – 1523.28 = x – 1267.27 then x = ?

  1. ((a))

    239.26

  2. ((b))

    248.36

  3. ((c))

    248.37

  4. ((d))

    242.26

Show Answer
Answer: ((a))

239.26

64

The geometric mean of 9 and 81 is:

  1. ((a))

    27

  2. ((b))

    24

  3. ((c))

    21

  4. ((d))

    30

Show Answer
Answer: ((a))

27

65

X had 60 coins, out of which 12\frac{1}{2} were Indian coins and 1/6 were US coins. How many other coins did he have?

  1. ((a))

    20

  2. ((b))

    24

  3. ((c))

    18

  4. ((d))

    21

Show Answer
Answer: ((a))

20

66

B and C do a certain work in 35 days, while A, B & C can do the same work in 17.5 days. In how many days can A do the same work alone?

  1. ((a))

    35 days

  2. ((b))

    33.67 days

  3. ((c))

    32.5 days

  4. ((d))

    36.33 days

Show Answer
Answer: ((a))

35 days

67

Two taps take 10 min and 15 min, respectively, to fill an empty pool. The first tap was ON for 4 min, after which it stopped working. How much time will the second tap take to fill the pool?

  1. ((a))

    10 min

  2. ((b))

    12 min

  3. ((c))

    8 min

  4. ((d))

    9 min

Show Answer
Answer: ((a))

10 min

68

If a – b = 5 and ab = 24, then a2 + b2 =

  1. ((a))

    73

  2. ((b))

    36

  3. ((c))

    1

  4. ((d))

    72

Show Answer
Answer: ((a))

73

69

A cubical block of side 10 cm and with a mass of 600 g, floats in water. How much of the cube is submerged?

  1. ((a))

    60%

  2. ((b))

    50%

  3. ((c))

    40%

  4. ((d))

    30%

Show Answer
Answer: ((a))

60%

70

A regular dodecahedron has twelve identical _____ faces.

  1. ((a))

    Pentagonal

  2. ((b))

    Quadrilateral

  3. ((c))

    Triangular

  4. ((d))

    Hexagonal 

Show Answer
Answer: ((a))

Pentagonal

71

When 321684 is divided by 5, the remainder is:

  1. ((a))

    3

  2. ((b))

    1

  3. ((c))

    2

  4. ((d))

    4

Show Answer
Answer: ((a))

3

72

Point A divides a line segment BC in the ratio 2 : 1 Co-ordinates of B are (3, -4) and C are (0, 5). What are the coordinates of point A?

  1. ((a))

    (-1, 2)

  2. ((b))

    (-2, 1)

  3. ((c))

    (2, 1)

  4. ((d))

    (1, 2)

Show Answer
Answer: ((a))

(-1, 2)

73

An article of Rs. 14000 was sold at a discount of 10% then a profit of 5% would have been made, what is the cost price?

  1. ((a))

    Rs. 12000

  2. ((b))

    Rs. 12500

  3. ((c))

    Rs. 11500

  4. ((d))

    Rs. 12600

Show Answer
Answer: ((a))

Rs. 12000

74

ΔABC is similar to ΔRST. If the ratio of altitudes of ΔABC : ΔRST is 1 : 4 and if RS = 6 cm, then find the length of AB.

  1. ((a))

    2 cm

  2. ((b))

    3 cm

  3. ((c))

    4 cm

  4. ((d))

    1.5 cm

Show Answer
Answer: ((a))

2 cm

75

How much will a sum of Rs. 2500 amount to in 1 year at 4% interest rate, when the interest is compunded half - yearly?

  1. ((a))

    Rs. 2601

  2. ((b))

    Rs. 2656

  3. ((c))

    Rs. 2610

  4. ((d))

    Rs. 2600

Show Answer
Answer: ((a))

Rs. 2601

76

A cylindrical wire of length L and radius r has resistance R. The resistance of another wire of the same material but of twice its length and one-fourth its radius is:

  1. ((a))

    32R

  2. ((b))

    8R

  3. ((c))

    R

  4. ((d))

    16R

Show Answer
Answer: ((a))

32R

77

An object is moving with a speed 100 m/s Find the distance travelled by this object in one minute.

  1. ((a))

    10 km

  2. ((b))

    6 km

  3. ((c))

    100 km

  4. ((d))

    0.6 km

Show Answer
Answer: ((a))

10 km

78

An article, whose marked price is Rs. 100, was bought at a discount of 10% At what price should it be sold to have a profit of 25%?

  1. ((a))

    Rs. 105

  2. ((b))

    Rs. 110

  3. ((c))

    Rs. 112.50

  4. ((d))

    Rs. 107.5

Show Answer
Answer: ((a))

Rs. 105

79

What is the value of √735/√375?

  1. ((a))

    13/5

  2. ((b))

    5/13

  3. ((c))

    7/5

  4. ((d))

    5/7

Show Answer
Answer: ((a))

13/5

80

A pipe normally takes 4 min to fill a bucket. Due to a hole in the bucket, it takes 6 min. In how much time will the hole empty the full bucket?

  1. ((a))

    12 min

  2. ((b))

    15 min

  3. ((c))

    8 min

  4. ((d))

    10 min

Show Answer
Answer: ((a))

12 min

81

If a six digit number 738A6A is divisible by 11 and a three digit number 68X is divisible by 9, then the value of (A + X) is:

  1. ((a))

    11

  2. ((b))

    15

  3. ((c))

    12

  4. ((d))

    13

Show Answer
Answer: ((a))

11

82

The compound interest on a certain sum of money for 2 years at 10% per annum is Rs. 420. What would be the simple interest on the same sum for the same period and the same rate?

  1. ((a))

    Rs. 375

  2. ((b))

    Rs. 380

  3. ((c))

    Rs. 350

  4. ((d))

    Rs. 400

Show Answer
Answer: ((a))

Rs. 375

83

What is the side of a cube if its lateral surface area is 324 sq cm?

  1. ((a))

    8 cm

  2. ((b))

    10 cm

  3. ((c))

    9 cm

  4. ((d))

    11 cm

Show Answer
Answer: ((a))

8 cm

84

The duplicate ratio of 4 : 5 is:

  1. ((a))

    16 : 25

  2. ((b))

    64 : 125

  3. ((c))

    4 : 5

  4. ((d))

    5 : 4

Show Answer
Answer: ((a))

16 : 25

85

What is the angle between the two hands of a clock when the time shown by the clock is 4 hours 15 minutes?

  1. ((a))

    37.5 degrees

  2. ((b))

    30 degrees

  3. ((c))

    40 degrees

  4. ((d))

    32.5 degrees

Show Answer
Answer: ((a))

37.5 degrees

86

An obtuse angle is:

  1. ((a))

    Equal to 45°

  2. ((b))

    Less than 90° 

  3. ((c))

    Equal to 90°

  4. ((d))

    Greater than 90° 

Show Answer
Answer: ((a))

Equal to 45°

87

An airplane flies at the speed of 1080 kmph. How much distance does it cover in a flight of 5 sec?

  1. ((a))

    1250 m

  2. ((b))

    1625 m

  3. ((c))

    1350 m

  4. ((d))

    1500 m

Show Answer
Answer: ((a))

1250 m

88

Which statement with regard to Class 2 lever is true?

  1. ((a))

    The mechanical advantage is always less than 1

  2. ((b))

    The effort is between the load and the fulcrum

  3. ((c))

    The load is in between the effort and the fulcrum

  4. ((d))

    The fulcrum is near the effort

Show Answer
Answer: ((a))

The mechanical advantage is always less than 1

89

What is the area of the rectangle whose diagonal is 17 cm and breadth is 8 cm?

  1. ((a))

    120 cm2

  2. ((b))

    125 cm2

  3. ((c))

    128 cm2

  4. ((d))

    136 cm2

Show Answer
Answer: ((a))

120 cm2

90

A statement is given followed by some conclusions as part of the options. Select the conclusion that logically follows the statement.

Statement: Polio vaccines given to children below 5 years of age reduce-instances of polio in the vaccinated children.

  1. ((a))

    All children who are vaccinated will never get polio.

  2. ((b))

    If the cost of the vaccination is more than the cost of treatment, then the vaccination should be suspended.

  3. ((c))

    Some children get polio despite getting polio vaccines.

  4. ((d))

    Some children may get polio via vaccinations.

Show Answer
Answer: ((a))

All children who are vaccinated will never get polio.

91

Consider a planet whose mass and radius both are one half to that of Earth. An object of weight W on Earth will weigh ________ on that planet.

  1. ((a))

    W/4

  2. ((b))

    W

  3. ((c))

    W/2

  4. ((d))

    2 W

Show Answer
Answer: ((a))

W/4

92

A girl of weight 440 N climbs up a rope through a height of 7 m in 20 s. The power expended by the girl is:

  1. ((a))

    154 W

  2. ((b))

    15.4 W

  3. ((c))

    72 W

  4. ((d))

    36 W

Show Answer
Answer: ((a))

154 W

93

In ΔABC, right angle at A. If ∠C = 30°, then sec B =

  1. ((a))

    2

  2. ((b))

    1/√2

  3. ((c))

    0.50

  4. ((d))

    √2

Show Answer
Answer: ((a))

2

94

A fishing boat sails 9 km South in still water. It then turns East and sails 8 km, turns North and sails 9 km, then turns to its right and sails 12 km. Where is the boat now with reference to its starting position?

  1. ((a))

    4 km East

  2. ((b))

    4 km West

  3. ((c))

    20 km West

  4. ((d))

    20 km East

Show Answer
Answer: ((a))

4 km East

95

________ curve is a curve traced by the free end of a thread unwound from a circle or a polygon in such a way that the thread is always tight and tangential to the circle or side of the polygon.

  1. ((a))

    A logarithmic

  2. ((b))

    A sinusoidal

  3. ((c))

    An exponential

  4. ((d))

    An involute

Show Answer
Answer: ((a))

A logarithmic

96

95°F = ______ °C

  1. ((a))

    45

  2. ((b))

    25

  3. ((c))

    15

  4. ((d))

    35

Show Answer
Answer: ((a))

45

97

What is the least number which, when divided by 5, 6, 8 and 10 leaves a remainder of 2 in each case?

  1. ((a))

    128

  2. ((b))

    122

  3. ((c))

    162

  4. ((d))

    118

Show Answer
Answer: ((a))

128

98

In a Class 3 lever, the effort and load move:

  1. ((a))

    In the opposite direction

  2. ((b))

    In the same direction

  3. ((c))

    In the perpendicular direction

  4. ((d))

    Depending on the load

Show Answer
Answer: ((a))

In the opposite direction

99

A ________ is a curve generated by a point fixed to a circle, within or outside its circumference, as the circle rolls along a straight line.

  1. ((a))

    Hurwitz

  2. ((b))

    Fermat

  3. ((c))

    Hyperelliptic

  4. ((d))

    Trochoid

Show Answer
Answer: ((a))

Hurwitz

100

According to National AIDS Control Organisation, almost 50% of new HIV infections are taking place in the age group of:

  1. ((a))

    15 - 24 years

  2. ((b))

    32 - 40 years

  3. ((c))

    24 - 32 years

  4. ((d))

    40 - 60 years

Show Answer
Answer: ((a))

15 - 24 years

Part B (75 questions)

101

For a given output and speed, a universal motor as compared to 220 V, 50 Hz supply will require

  1. ((a))

    Less voltage at low frequency

  2. ((b))

    Less voltage at high frequency 

  3. ((c))

    High voltage at high frequency

  4. ((d))

    High voltage at low frequency 

Show Answer
Answer: ((a))

Less voltage at low frequency

102

The alternators are rated as________

  1. ((a))

    kW

  2. ((b))

    kVAR

  3. ((c))

    kVA 

  4. ((d))

    kWh

Show Answer
Answer: ((a))

kW

103

Which of the following meters are not used on D.C. circuit

  1. ((a))

    Commutator motor meters

  2. ((b))

    Mercury motor meters

  3. ((c))

    Induction meters

  4. ((d))

    None of the above

Show Answer
Answer: ((a))

Commutator motor meters

104

In the DC motor, iron losses occur in

  1. ((a))

    Field

  2. ((b))

    Armature

  3. ((c))

    Brushes

  4. ((d))

    Commutator

Show Answer
Answer: ((a))

Field

105

Aquadag coating is most commonly used in CROs to:

  1. ((a))

    absorb moisture

  2. ((b))

    absorb the extra electrons emitted

  3. ((c))

    absorb and emit the rays

  4. ((d))

    absorb the rays emitted

Show Answer
Answer: ((a))

absorb moisture

106

The protection system of the household circuit that trips if someone receives a shock is:

  1. ((a))

    ELCB

  2. ((b))

    MCB

  3. ((c))

    HRC fuse

  4. ((d))

    MCCB

Show Answer
Answer: ((a))

ELCB

107

For household wiring and small units, the following should be used as a safety measure:

  1. ((a))

    MCB

  2. ((b))

    OCB

  3. ((c))

    ACB

  4. ((d))

    MCCB

Show Answer
Answer: ((a))

MCB

108

The function of a trigger level knob on a CRO is:

  1. ((a))

    To change the sweep speeds of time base

  2. ((b))

    To change the length of time base

  3. ((c))

    To change the intensity of the trace

  4. ((d))

    To change the level of the input signal required to get stable display on the scope of the selected channel

Show Answer
Answer: ((a))

To change the sweep speeds of time base

109

A voltmeter provides the path for:

  1. ((a))

    Minimum current

  2. ((b))

    Minimum voltage

  3. ((c))

    Maximum voltage

  4. ((d))

    Maximum current

Show Answer
Answer: ((a))

Minimum current

110

The minimum clearance distance that equipment should be kept away from 50 kV power lines is:

  1. ((a))

    20 feet

  2. ((b))

    10 feet

  3. ((c))

    15 feet

  4. ((d))

    5 feet

Show Answer
Answer: ((a))

20 feet

111

Identify the type of file shown in the below figure.

  1. ((a))

    RASP cut file

  2. ((b))

    Double cut file

  3. ((c))

    Single cut file

  4. ((d))

    Curved cut file

Show Answer
Answer: ((a))

RASP cut file

112

Resistance can be measured using:

  1. ((a))

    Voltmeter

  2. ((b))

    Wattmeter

  3. ((c))

    Ammeter

  4. ((d))

    Ohmmeter

Show Answer
Answer: ((a))

Voltmeter

113

The current on a high voltage line is measured using:

  1. ((a))

    Current shunt

  2. ((b))

    Voltage transformer

  3. ((c))

    Load resistor

  4. ((d))

    Current transformer

Show Answer
Answer: ((a))

Current shunt

114

Which among the below is not generally used for distribution systems?

  1. ((a))

    1 phase, 3 wire system

  2. ((b))

    3 phase, 3 wire system

  3. ((c))

    3 phase, 4 wire system

  4. ((d))

    1 phase, 4 wire system

Show Answer
Answer: ((a))

1 phase, 3 wire system

115

Which one of the following is a ferromagnetic material?

  1. ((a))

    Nickel

  2. ((b))

    Lead

  3. ((c))

    Platinum

  4. ((d))

    Copper

Show Answer
Answer: ((a))

Nickel

116

In a delta to star connection of transformer one of the following is true

  1. ((a))

    used for large HV transformers

  2. ((b))

    Used for applications where voltages need to be stepped down

  3. ((c))

    line voltage is equal to phase voltage

  4. ((d))

    Used for applications where voltages need to be stepped up

Show Answer
Answer: ((a))

used for large HV transformers

117

Which of the following is an example for non-conventional energy resource?

  1. ((a))

    petrol

  2. ((b))

    diesel

  3. ((c))

    wind

  4. ((d))

    coal

Show Answer
Answer: ((a))

petrol

118

Which among the following is not a passive component?

  1. ((a))

    Capacitor

  2. ((b))

    Resistor

  3. ((c))

    Inductor

  4. ((d))

    Diode

Show Answer
Answer: ((a))

Capacitor

119

HP is equivalent to how many watts?

  1. ((a))

    743

  2. ((b))

    746

  3. ((c))

    745

  4. ((d))

    744

Show Answer
Answer: ((a))

743

120

The protective equipment used to protect equipment against lightning stroke is:

  1. ((a))

    shunt reactors

  2. ((b))

    Circuit breaker

  3. ((c))

    Isolator

  4. ((d))

    Lightning arrester

Show Answer
Answer: ((a))

shunt reactors

121

Boost charging is the process of charging on _______.

  1. ((a))

    Low current for short time

  2. ((b))

    High current for a short time

  3. ((c))

    Low current for a long time

  4. ((d))

    High current for a long Time

Show Answer
Answer: ((a))

Low current for short time

122

When a capacitor load is connected, the power factor is:

  1. ((a))

    Leading

  2. ((b))

    Infinite

  3. ((c))

    Unity

  4. ((d))

    Lagging

Show Answer
Answer: ((a))

Leading

123

What is another name for Eddy Currents

  1. ((a))

    Foucault Currents

  2. ((b))

    Faculty Currents

  3. ((c))

    Faulty Currents

  4. ((d))

    Berry Currents

Show Answer
Answer: ((a))

Foucault Currents

124

The type of connection commonly used in low voltage distribution systems is:

  1. ((a))

    Star / Star

  2. ((b))

    delta / delta

  3. ((c))

    Star / delta

  4. ((d))

    Delta/ star

Show Answer
Answer: ((a))

Star / Star

125

If the nominal voltage of a given battery is 1.2 V, what is the type cell of used?

  1. ((a))

    Lithium ion

  2. ((b))

    Lead acid

  3. ((c))

    Nickel cadmium

  4. ((d))

    Zinc silver oxide

Show Answer
Answer: ((a))

Lithium ion

126

When an inductive load is connected, the power factor is:

  1. ((a))

    Unity

  2. ((b))

    Infinite

  3. ((c))

    Lagging

  4. ((d))

    Leading

Show Answer
Answer: ((a))

Unity

127

Which lamp has the best Colour Rendering Index (CRI)?

  1. ((a))

    Fluorescent

  2. ((b))

    Incandescent

  3. ((c))

    LED

  4. ((d))

    High-pressure sodium vapor

Show Answer
Answer: ((a))

Fluorescent

128

What is the type of cell used for building a laptop battery pack?

  1. ((a))

    Nickel cadmium

  2. ((b))

    Lithium ion

  3. ((c))

    Zinc silver oxide

  4. ((d))

    Lead acid

Show Answer
Answer: ((a))

Nickel cadmium

129

PVC insulated non sheathed single core cables are most preferably used in:

  1. ((a))

    Domestic and industrial wiring

  2. ((b))

    Hazardous locations

  3. ((c))

    Dry locations and underground systems

  4. ((d))

    Wet locations

Show Answer
Answer: ((a))

Domestic and industrial wiring

130

An alternator provides maximum power when the load angle is:

  1. ((a))

    180°

  2. ((b))

    90°

  3. ((c))

    120°

  4. ((d))

    45°

Show Answer
Answer: ((a))

180°

131

The _______ of a motor depends on the loading of the motor.

  1. ((a))

    power factor

  2. ((b))

    voltage rating

  3. ((c))

    winding

  4. ((d))

    efficiency

Show Answer
Answer: ((a))

power factor

132

What does the symbol shown below represent?

  1. ((a))

    Heater

  2. ((b))

    Blower

  3. ((c))

    Fan

  4. ((d))

    Heat

Show Answer
Answer: ((a))

Heater

133

The visor of a halogen flood lamp is made of:

  1. ((a))

    Mica

  2. ((b))

    Glass

  3. ((c))

    Polycarbonate

  4. ((d))

    Silica

Show Answer
Answer: ((a))

Mica

134

The direction of a force in a current-carrying conductor can be determined using:

  1. ((a))

    Fleming's Left-Hand Rule

  2. ((b))

    Faraday's Law

  3. ((c))

    Fleming's Fist Rule

  4. ((d))

    Fleming's Right-Hand Rule

Show Answer
Answer: ((a))

Fleming's Left-Hand Rule

135

The starter which can be used to reduce the voltage during starting of an induction motor is:

  1. ((a))

    Star starter

  2. ((b))

    Delta starter

  3. ((c))

    Star Delta starter

  4. ((d))

    Delta Star starter

Show Answer
Answer: ((a))

Star starter

136

What is the use of a static frequency changer in a motor?

  1. ((a))

    To achieve direction reversal

  2. ((b))

    To achieve speed regulation

  3. ((c))

    To control power factor

  4. ((d))

    To control cooling

Show Answer
Answer: ((a))

To achieve direction reversal

137

What is meant by line voltage?

  1. ((a))

    The voltage available between any two phases

  2. ((b))

    The voltage available between ground and neutral

  3. ((c))

    The voltage available between phase and neutral

  4. ((d))

    The voltage available between the three phases

Show Answer
Answer: ((a))

The voltage available between any two phases

138

The type of motor commonly used in washing machines and mixers is:

  1. ((a))

    DC shunt motor

  2. ((b))

    Reluctance motor

  3. ((c))

    synchronous motor

  4. ((d))

    universal motor

Show Answer
Answer: ((a))

DC shunt motor

139

The current drawn by a motor is determined by the stator impedance and _______ applied across the terminals.

  1. ((a))

    force

  2. ((b))

    power

  3. ((c))

    current

  4. ((d))

    voltage

Show Answer
Answer: ((a))

force

140

The minimum insulation resistance value for a system running at a maximum voltage of 250 V is:

  1. ((a))

    1000 MΩ 

  2. ((b))

    25 MΩ

  3. ((c))

    100 MΩ

  4. ((d))

    1000 GΩ

Show Answer
Answer: ((a))

1000 MΩ 

141

What is the insulation resistance test voltage required for an equipment running on maximum voltage of 600 V?

  1. ((a))

    300 V

  2. ((b))

    1000 V

  3. ((c))

    500 V

  4. ((d))

    100 V

Show Answer
Answer: ((a))

300 V

142

What is the allowable frequency variation as per IE rule of safety?

  1. ((a))

    10%

  2. ((b))

    3%

  3. ((c))

    5%

  4. ((d))

    8%

Show Answer
Answer: ((a))

10%

143

Which tool is used for finishing a circular hole?

  1. ((a))

    Chisel

  2. ((b))

    Half round file

  3. ((c))

    Drill

  4. ((d))

    Flat file

Show Answer
Answer: ((a))

Chisel

144

What is the use of extended cable of an end pole?

  1. ((a))

    Excess wire tie-up

  2. ((b))

    Preventing the pole from bending

  3. ((c))

    Earthing line

  4. ((d))

    Voltage testing

Show Answer
Answer: ((a))

Excess wire tie-up

145

Which of the below emits nearly monochromatic light?

  1. ((a))

    Mercury vapor lamp

  2. ((b))

    Bulb

  3. ((c))

    Tubelight

  4. ((d))

    Sodium vapor lamp

Show Answer
Answer: ((a))

Mercury vapor lamp

146

Soldering iron bit is made up of:

  1. ((a))

    Tin

  2. ((b))

    Steel

  3. ((c))

    Brass

  4. ((d))

    Copper

Show Answer
Answer: ((a))

Tin

147

The principle of solar power is based on:

  1. ((a))

    Hydroelectric effect

  2. ((b))

    Thermoelectric effect

  3. ((c))

    Photovoltaic effect

  4. ((d))

    Fission

Show Answer
Answer: ((a))

Hydroelectric effect

148

Which is the i­­­­nsulation material used in an electric iron?

  1. ((a))

    Plastic

  2. ((b))

    Rubber

  3. ((c))

    Silica

  4. ((d))

    Mica

Show Answer
Answer: ((a))

Plastic

149

_______ is unlikely to cause an electric shock while doing electric work.

  1. ((a))

    Wet wood

  2. ((b))

    Metal rod

  3. ((c))

    Wet rope

  4. ((d))

    Dry wood

Show Answer
Answer: ((a))

Wet wood

150

Which is the DC motor whose speed is independent of armature current?

  1. ((a))

    Series motor

  2. ((b))

    Compound motor

  3. ((c))

    Brushless motor

  4. ((d))

    Shunt motor

Show Answer
Answer: ((a))

Series motor

151

A three-phase star configuration motor has:

  1. ((a))

    4 hot wires and 1 neutral wire

  2. ((b))

    3 hot wires and 1 ground wire

  3. ((c))

    3 hot wires , 1 neutral and 1 ground wires

  4. ((d))

    3 hot wires and 1 neutral wire

Show Answer
Answer: ((a))

4 hot wires and 1 neutral wire

152

Which among these is the heating element used in a steam iron?

  1. ((a))

    Sealed tungsten tube

  2. ((b))

    Mica press tungsten strip

  3. ((c))

    Copper coil

  4. ((d))

    Open tungsten coil

Show Answer
Answer: ((a))

Sealed tungsten tube

153

Identify the type of lug used for connecting aluminium cable to copper bus bar from the given options.

  1. ((a))

    Insulated sleeve lug

  2. ((b))

    Bi-metallic cable lug

  3. ((c))

    Bi-metallic cable connector

  4. ((d))

    Copper lug

Show Answer
Answer: ((a))

Insulated sleeve lug

154

The temperature setting for a bi-metallic strip can be changed by:

  1. ((a))

    Changing the current

  2. ((b))

    Moving it close and away from a heating element

  3. ((c))

    Changing  I/P voltage

  4. ((d))

    changing the frequency

Show Answer
Answer: ((a))

Changing the current

155

Which part of the motor confirms that it is a DC motor?

  1. ((a))

    Frame

  2. ((b))

    Commutator

  3. ((c))

    Shaft

  4. ((d))

    Stator

Show Answer
Answer: ((a))

Frame

156

In which type of motor a fly wheel is used during heavy loads?

  1. ((a))

    DC Series motor

  2. ((b))

    AC series motor

  3. ((c))

    DC Shunt motor

  4. ((d))

    AC shunt motor

Show Answer
Answer: ((a))

DC Series motor

157

Latches are _______ circuits.

  1. ((a))

    edge triggered

  2. ((b))

    pulse triggered

  3. ((c))

    count triggered

  4. ((d))

    level triggered

Show Answer
Answer: ((a))

edge triggered

158

Star to delta transformer works properly when:

  1. ((a))

    Voltage is high

  2. ((b))

    Load is unbalanced

  3. ((c))

    Current is high

  4. ((d))

    The load is balanced as well as unbalanced

Show Answer
Answer: ((a))

Voltage is high

159

What is represented by the below symbol?

  1. ((a))

    Battery

  2. ((b))

    Capacitor

  3. ((c))

    capacitor polarized

  4. ((d))

    Resistor

Show Answer
Answer: ((a))

Battery

160

What is the advantage of armored cable?

  1. ((a))

    It has higher insulation resistance

  2. ((b))

    It can sustain high voltage

  3. ((c))

    It can smoothly travel through gland

  4. ((d))

    It can sustain higher impact

Show Answer
Answer: ((a))

It has higher insulation resistance

161

Which one of the following is not the speed control technique of squirrel cage induction motor?

  1. ((a))

    frequency control

  2. ((b))

    stator voltage control

  3. ((c))

    stator resistance control

  4. ((d))

    rotor resistance control

Show Answer
Answer: ((a))

frequency control

162

The number of poles of a three-phase induction motor running at 750 rpm with 50 Hz frequency is

  1. ((a))

    4

  2. ((b))

    8

  3. ((c))

    6

  4. ((d))

    2

Show Answer
Answer: ((a))

4

163

Constant loss in a three-phase induction motor is determined by:

  1. ((a))

    Two wattmeter test

  2. ((b))

    Load test

  3. ((c))

    Physical test

  4. ((d))

    No load test

Show Answer
Answer: ((a))

Two wattmeter test

164

The flow rate of a single-phase pump can be changed by

  1. ((a))

    Changing I/P voltage

  2. ((b))

    Controlling the valve

  3. ((c))

    Reducing the pipe size

  4. ((d))

    Changing I/P frequency

Show Answer
Answer: ((a))

Changing I/P voltage

165

In star delta motor, the starting current is:

  1. ((a))

    Reduced approximately by 1/3 times as compared to the original

  2. ((b))

    Reduced approximately by 1/4 times as compared to the original

  3. ((c))

    Increased approximately by 1/3 times as compared to the original

  4. ((d))

    Increased approximately by 14 times as compared to the original

Show Answer
Answer: ((a))

Reduced approximately by 1/3 times as compared to the original

166

For a system with 230 V AC, 5 A current and lag of 30°, what's the reactive power?

  1. ((a))

    275 VAR

  2. ((b))

    675 VAR

  3. ((c))

    175 VAR

  4. ((d))

    575 VAR

Show Answer
Answer: ((a))

275 VAR

167

KVAR meters are used to measure the _______ component of KVA in a three-phase circuit.

  1. ((a))

    Faraday

  2. ((b))

    Lorentz

  3. ((c))

    Biot-Savart's

  4. ((d))

    Wattless

Show Answer
Answer: ((a))

Faraday

168

Which transformer (from the below) is used in a servo stabilizer?

  1. ((a))

    Step-up transformer

  2. ((b))

    Step-down transformer

  3. ((c))

    Multi-tap transformer

  4. ((d))

    Auto transformer

Show Answer
Answer: ((a))

Step-up transformer

169

The starting torque of an induction motor is _______ when rotor resistance equals rotor reactance.

  1. ((a))

    Minimum

  2. ((b))

    Constant

  3. ((c))

    Maximum

  4. ((d))

    Zero

Show Answer
Answer: ((a))

Minimum

170

Which of the following is not an essential part of motor meter?

  1. ((a))

    Operating torque system

  2. ((b))

    Revolution registering system

  3. ((c))

    Inductive pickup

  4. ((d))

    Braking system

Show Answer
Answer: ((a))

Operating torque system

171

Ohm's law can be applied to

  1. ((a))

    Resistor

  2. ((b))

    Rectifier

  3. ((c))

    Transformer

  4. ((d))

    Zener Diode

Show Answer
Answer: ((a))

Resistor

172

To find real power, the apparent power has to be multiplied by:

  1. ((a))

    Supply factor

  2. ((b))

    Scaling factor

  3. ((c))

    Resonance frequency

  4. ((d))

    Power factor

Show Answer
Answer: ((a))

Supply factor

173

What is the relation between line voltage and phase voltage in a delta connection?

  1. ((a))

    Line voltage = √2 phase voltage

  2. ((b))

    Line voltage = √3 phase voltage

  3. ((c))

    Line voltage = phase voltage

  4. ((d))

    Line voltage = 1/2 phase voltage

Show Answer
Answer: ((a))

Line voltage = √2 phase voltage

174

In a universal motor, normally the ratio of width of brush to the width of commutator segments is:

  1. ((a))

    2 : 1

  2. ((b))

    1 : 2

  3. ((c))

    1 : 1

  4. ((d))

    4 : 1

Show Answer
Answer: ((a))

2 : 1

175

The majority charge carriers in n-type semiconductors are

  1. ((a))

    Holes

  2. ((b))

    Electrons

  3. ((c))

    Neutrons

  4. ((d))

    Protons

Show Answer
Answer: ((a))

Holes

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