Official Paper

RRB JE EE 1 Sept 2019 (Shift 1) CBT 2 Official Paper (Previous Year Paper)

150 questions · 120 minutes · with answers · free

Attempt as Timed Mock Test

Test (150 questions)

1

A JFET is also called ________ device.

  1. ((a))

    Bipolar

  2. ((b))

    Neither unipolar nor bipolar

  3. ((c))

    Both unipolar and bipolar

  4. ((d))

    Unipolar

Show Answer
Answer: ((a))

Bipolar

2

Which of the following scientists rediscovered DDT in 1939?

  1. ((a))

    Rachel Carson

  2. ((b))

    Alexander Fleming

  3. ((c))

    Madam Curie

  4. ((d))

    Paul Hermann Muller

Show Answer
Answer: ((a))

Rachel Carson

3

Which of the following has the smallest storage capacity?

  1. ((a))

    Floppy disk

  2. ((b))

    CD

  3. ((c))

    Hard disk

  4. ((d))

    Zip disk

Show Answer
Answer: ((a))

Floppy disk

4

In a permanent magnet moving coil instrument, the deflecting torque is directly proportional to-

  1. ((a))

    Current passing through coil

  2. ((b))

    All of the options

  3. ((c))

    Flux density in air gap

  4. ((d))

    Number of turns of coil

Show Answer
Answer: ((a))

Current passing through coil

5

Lalit Kala Academy was established by the Government of India to-

  1. ((a))

    Promote understanding of Indian Art

  2. ((b))

    Develop dance and drama

  3. ((c))

    Increase film production

  4. ((d))

    Develop music

Show Answer
Answer: ((a))

Promote understanding of Indian Art

6

If there is no lichens present in the air, then it indicates

  1. ((a))

    Air quality is moderate

  2. ((b))

    Air is very clean

  3. ((c))

    Air is not polluted with SO2

  4. ((d))

    Air is highly polluted with SO2

Show Answer
Answer: ((a))

Air quality is moderate

7

Electricity produced from _______ is called piezoelectricity.

  1. ((a))

    Velocity

  2. ((b))

    Heat

  3. ((c))

    Pressure

  4. ((d))

    Light

Show Answer
Answer: ((a))

Velocity

8

During raceway wiring, which colour wire is always used for neutral connections?

  1. ((a))

    Red

  2. ((b))

    Green

  3. ((c))

    Either green or white

  4. ((d))

    White

Show Answer
Answer: ((a))

Red

9

An ON-OFF switch with overload protection is called a _______.

  1. ((a))

    Magnetic starter

  2. ((b))

    Combination starter

  3. ((c))

    Manual starter

  4. ((d))

    Reversing starter

Show Answer
Answer: ((a))

Magnetic starter

10

The armature current of a synchronous motor has large value for-

  1. ((a))

    High excitation

  2. ((b))

    Both low and high excitation

  3. ((c))

    Medium excitation

  4. ((d))

    Low excitation

Show Answer
Answer: ((a))

High excitation

11

________ system is universally adopted for a generation, transmission and distribution of electric power.

  1. ((a))

    Three phase

  2. ((b))

    Single phase

  3. ((c))

    Two phase

  4. ((d))

    Both single and two phase

Show Answer
Answer: ((a))

Three phase

12

A magnetic pressure which sets up or tends to set up flux in a magnetic circuit is called-

  1. ((a))

    Magnetomotive force

  2. ((b))

    Magnetic field

  3. ((c))

    Cross magnetisation

  4. ((d))

    Demagnetisation

Show Answer
Answer: ((a))

Magnetomotive force

13

In 2018, France’s highest civilian award, Legion d’Honneur was awarded to

  1. ((a))

    Pranab Mukherjee

  2. ((b))

    Azim Premji

  3. ((c))

    Soumitra Chatterjee

  4. ((d))

    Mrinal Sen

Show Answer
Answer: ((a))

Pranab Mukherjee

14

The difference between the synchronous speed and the actual speed of an induction motor is known as-

  1. ((a))

    Backlash

  2. ((b))

    Slip

  3. ((c))

    Lag

  4. ((d))

    Regulation

Show Answer
Answer: ((a))

Backlash

15

Silicon solar cell has an open circuit voltage NOT equivalent to-

  1. ((a))

    All of the options

  2. ((b))

    0.45 V

  3. ((c))

    1.3 V

  4. ((d))

    1 V

Show Answer
Answer: ((a))

All of the options

16

In a transmission system, a feeder feeds power to-

  1. ((a))

    Power plant substation

  2. ((b))

    Distributors

  3. ((c))

    Generating substations

  4. ((d))

    Service mains

Show Answer
Answer: ((a))

Power plant substation

17

'Kalaripayattu' is the martial art of-

  1. ((a))

    Madhya Pradesh

  2. ((b))

    Telangana

  3. ((c))

    Nagaland

  4. ((d))

    Kerala

Show Answer
Answer: ((a))

Madhya Pradesh

18

When the rotor of a three-phase induction motor runs at synchronous speed, its rotor frequency will become-

  1. ((a))

    Double the supply frequency

  2. ((b))

    Zero

  3. ((c))

    Half of supply frequency

  4. ((d))

    Equal to the supply frequency

Show Answer
Answer: ((a))

Double the supply frequency

19

The ballistic galvanometer is designed to deflect its needle proportional to ________ passing through its moving coil.

  1. ((a))

    Magnetic force

  2. ((b))

    Pressure energy

  3. ((c))

    Charge

  4. ((d))

    Heat energy

Show Answer
Answer: ((a))

Magnetic force

20

A coil of 600 turns and of resistance of 20 Ω is wound uniformly over a steel ring of mean circumference 30 cm and cross sectional area 9 cm2. If the relative permeability of the ring is 1600. Find the value of reluctance.

  1. ((a))

    4.657 × 105 AT/Wb

  2. ((b))

    1.657 × 105 AT/Wb

  3. ((c))

    3.657 × 105 AT/Wb

  4. ((d))

    2.657 × 105 AT/Wb

Show Answer
Answer: ((a))

4.657 × 105 AT/Wb

21

For a slip 's' and supply frequency 'f', the frequency of current in rotor will be-

  1. ((a))

    sf

  2. ((b))

    f/s

  3. ((c))

    f2/s

  4. ((d))

    (1 - s)f

Show Answer
Answer: ((a))

sf

22

The electric displacement of a winding in two-phase supply is-

  1. ((a))

    180° 

  2. ((b))

    90°

  3. ((c))

    60°

  4. ((d))

    120°

Show Answer
Answer: ((a))

180° 

23

RMS value is defined based on which of the following?

  1. ((a))

    Heating effect

  2. ((b))

    Charge transfer

  3. ((c))

    Voltage

  4. ((d))

    Current

Show Answer
Answer: ((a))

Heating effect

24

Paramagnetic substances are-

  1. ((a))

    Produced by heating iron above the curie point

  2. ((b))

    Weakly repelled by a magnet

  3. ((c))

    Weakly attracted by a magnet

  4. ((d))

    The same as that of dia magnetic substances

Show Answer
Answer: ((a))

Produced by heating iron above the curie point

25

A component which is used to close or break a circuit is called-

  1. ((a))

    Bulb

  2. ((b))

    Switch

  3. ((c))

    Wire

  4. ((d))

    Electric cell

Show Answer
Answer: ((a))

Bulb

26

When an electric device, appliance or electrical installation is connected to the earth electrode without a fuse, circuit breaker or resistance/Impedance, It is called ___________.

  1. ((a))

    Earth resistance

  2. ((b))

    Earth continuity conductor

  3. ((c))

    Solidly earthed

  4. ((d))

    Earthing lead

Show Answer
Answer: ((a))

Earth resistance

27

Which of the following is a possible cause of blackening at both ends of the fluorescent lamp?

  1. ((a))

    Improper ballast

  2. ((b))

    Frequent starting of fluorescent lamp

  3. ((c))

    All of the options

  4. ((d))

    Low or high voltage

Show Answer
Answer: ((a))

Improper ballast

28

Ceiling rose is used to take supply for a/an-

  1. ((a))

    Electric iron

  2. ((b))

    Fluorescent lamp

  3. ((c))

    Portable equipment

  4. ((d))

    Heater of 2000 W

Show Answer
Answer: ((a))

Electric iron

29

Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as

  1. ((a))

    3 : 2

  2. ((b))

    2 : 5

  3. ((c))

    5 : 2

  4. ((d))

    2 : 3

Show Answer
Answer: ((a))

3 : 2

30

An anchor or down guy used at the ends of pole lines in order to counter balance. The pull of the line conductors is generally known as-

  1. ((a))

    Arm guy

  2. ((b))

    Head guy

  3. ((c))

    Terminal guy

  4. ((d))

    Span guy

Show Answer
Answer: ((a))

Arm guy

31

The river Ganges flows through which of the following countries?

  1. ((a))

    India and Bhutan

  2. ((b))

    India and Bangladesh

  3. ((c))

    India, Myanmar and Bangladesh

  4. ((d))

    India, Bhutan and Bangladesh

Show Answer
Answer: ((a))

India and Bhutan

32

What is the full form of CAD?

  1. ((a))

    Computer Analog Design

  2. ((b))

    Common Advanced Design

  3. ((c))

    Computer Aided Design

  4. ((d))

    Computer Algorithm Design

Show Answer
Answer: ((a))

Computer Analog Design

33

When a voltmeter-ammeter method is applied for the measurement of resistance, the voltmeter reads a value of 8.28 V and the ammeter reading is 4.14 mA, then the value of the resistance will be-

  1. ((a))

    2 MΩ

  2. ((b))

    20 kΩ

  3. ((c))

    200 kΩ

  4. ((d))

    2 kΩ

Show Answer
Answer: ((a))

2 MΩ

34

The thyristor is turned off when the anode current falls below-

  1. ((a))

    Breakover current

  2. ((b))

    Forward current

  3. ((c))

    Holding current

  4. ((d))

    Latching current

Show Answer
Answer: ((a))

Breakover current

35

Which of the following have the same unit, ms-1 ?

  1. ((a))

    Speed and momentum

  2. ((b))

    Acceleration and momentum

  3. ((c))

    Velocity and acceleration

  4. ((d))

    Speed and velocity

Show Answer
Answer: ((a))

Speed and momentum

36

In India, what is the frequency of the AC power line voltage?

  1. ((a))

    50 Hz

  2. ((b))

    120 Hz

  3. ((c))

    100 Hz

  4. ((d))

    60 Hz

Show Answer
Answer: ((a))

50 Hz

37

The total opposition offered to the flow of current in AC circuit is called-

  1. ((a))

    Capacitance

  2. ((b))

    Resistance

  3. ((c))

    Impedance

  4. ((d))

    Inductance

Show Answer
Answer: ((a))

Capacitance

38

Which of the following are the disadvantages of synchronous motors?

  1. ((a))

    Usually operate with higher efficiencies

  2. ((b))

    Electro-magnetic power varies linearly with the voltage

  3. ((c))

    Ability to control the power factor

  4. ((d))

    Requires DC excitation

Show Answer
Answer: ((a))

Usually operate with higher efficiencies

39

If a power of 100 W is being supplied across a potential difference of 200 V, find the current flowing through the circuit. 

  1. ((a))

    20 A

  2. ((b))

    1 A

  3. ((c))

    0.5 A

  4. ((d))

    2 A

Show Answer
Answer: ((a))

20 A

40

Which of the following diodes is a signal diode

  1. ((a))

    BY127

  2. ((b))

    DR25

  3. ((c))

    1N4007

  4. ((d))

    0A79

Show Answer
Answer: ((a))

BY127

41

The material used for making optic-fibre cable in general is-

  1. ((a))

    Copper

  2. ((b))

    Aluminium

  3. ((c))

    Steel

  4. ((d))

    Transparent plastic

Show Answer
Answer: ((a))

Copper

42

Power is transmitted over transmission lines on high voltage, because

  1. ((a))

    Efficiency is increased

  2. ((b))

    Conductor cost is reduced

  3. ((c))

    Current is reduced

  4. ((d))

    Both increased efficiency and reduced conductor cost

Show Answer
Answer: ((a))

Efficiency is increased

43

If there are “n” nodes in the circuit there will be ________ independent nodal equations

  1. ((a))

    n - 1

  2. ((b))

    n - 2

  3. ((c))

    n + 1

  4. ((d))

    n

Show Answer
Answer: ((a))

n - 1

44

Which is the most important international agreement for conserving all biodiversity?

  1. ((a))

    Convention on Ballast Water

  2. ((b))

    Convention on Biological Diversity

  3. ((c))

    UNCLOS

  4. ((d))

    CITES

Show Answer
Answer: ((a))

Convention on Ballast Water

45

An alternator has 20 poles and running at 300 RPM will generate alternating voltage and current whose frequency is-

  1. ((a))

    40 Hz

  2. ((b))

    30 Hz

  3. ((c))

    100 Hz

  4. ((d))

    50 Hz

Show Answer
Answer: ((a))

40 Hz

46

The winding of interpoles is connected ________ with the armature.

  1. ((a))

    Both in series and parallel

  2. ((b))

    Half in series and half in parallel

  3. ((c))

    In parallel

  4. ((d))

    In series

Show Answer
Answer: ((a))

Both in series and parallel

47

Which of the following are the types of earthing system?

  1. ((a))

    Plate earthing

  2. ((b))

    Pipe earthing

  3. ((c))

    All of the options

  4. ((d))

    Wire earthing

Show Answer
Answer: ((a))

Plate earthing

48

Mho relay is suitable for __________ transmission lines.

  1. ((a))

    Ultra High voltage

  2. ((b))

    Extra-high voltage

  3. ((c))

    Both Ultra and extra high voltage

  4. ((d))

    Low voltage

Show Answer
Answer: ((a))

Ultra High voltage

49

The rotor in an alternator requires-

  1. ((a))

    Pulsed DC

  2. ((b))

    AC

  3. ((c))

    Triangular wave

  4. ((d))

    DC

Show Answer
Answer: ((a))

Pulsed DC

50

Synchronous motor when used for power factor improvement should be-

  1. ((a))

    Operated with load

  2. ((b))

    Operated at no load with over excitation

  3. ((c))

    Connected along with capacitor bank

  4. ((d))

    Operated at no load with under excitation

Show Answer
Answer: ((a))

Operated with load

51

Method of representing numbers such as 0's and 1's is called-

  1. ((a))

    Binary notation

  2. ((b))

    Primary notation

  3. ((c))

    Variable notation

  4. ((d))

    Secondary notation

Show Answer
Answer: ((a))

Binary notation

52

Susceptibilities of diamagnetic material is-

  1. ((a))

    Positive

  2. ((b))

    Zero

  3. ((c))

    Negative

  4. ((d))

    Unity

Show Answer
Answer: ((a))

Positive

53

What is the most common and important type of fuse used in domestic application?

  1. ((a))

    Cartridge fuse

  2. ((b))

    HRC fuse

  3. ((c))

    Kit-Kat type fuse

  4. ((d))

    Liquid type fuse

Show Answer
Answer: ((a))

Cartridge fuse

54

Where is the control grid placed in a triode?

  1. ((a))

    Very near to anode

  2. ((b))

    Very near to cathode

  3. ((c))

    Midway between plate and cathode

  4. ((d))

    Very near to plate

Show Answer
Answer: ((a))

Very near to anode

55

What is the average life of a fluorescent tube?

  1. ((a))

    1000 hours

  2. ((b))

    3000 hours

  3. ((c))

    2000 hours

  4. ((d))

    7000 hours

Show Answer
Answer: ((a))

1000 hours

56

In an alternator, the _______ current is generated in the stationary stator.

  1. ((a))

    DC

  2. ((b))

    Both AC and DC

  3. ((c))

    Pulsating DC

  4. ((d))

    AC

Show Answer
Answer: ((a))

DC

57

When was the French East India Company set up?

  1. ((a))

    1665

  2. ((b))

    1667

  3. ((c))

    1664

  4. ((d))

    1666

Show Answer
Answer: ((a))

1665

58

Filament in an incandescent lamp is made of-

  1. ((a))

    Tungsten wire

  2. ((b))

    Nichrome wire

  3. ((c))

    Copper wire

  4. ((d))

    Fuse wire

Show Answer
Answer: ((a))

Tungsten wire

59

If the battery of a multimeter becomes weak, then it will give-

  1. ((a))

    Less reading

  2. ((b))

    No reading

  3. ((c))

    Perfect reading

  4. ((d))

    High reading

Show Answer
Answer: ((a))

Less reading

60

The measurement errors mainly caused by human mistakes are called-

  1. ((a))

    Observational error

  2. ((b))

    Instrumental error

  3. ((c))

    Systematic error

  4. ((d))

    Gross error

Show Answer
Answer: ((a))

Observational error

61

Which of the following diodes operate(s) in reverse breakdown region?

  1. ((a))

    LED

  2. ((b))

    Both PN junction diode and zener diode

  3. ((c))

    Zener diode

  4. ((d))

    PN junction diode

Show Answer
Answer: ((a))

LED

62

The glasses used in spectacles and watch makers' magnifying glasses are examples of-

  1. ((a))

    Concave mirror

  2. ((b))

    Lens

  3. ((c))

    Convex mirror

  4. ((d))

    Plane mirror

Show Answer
Answer: ((a))

Concave mirror

63

In 2019, which award was given to Irfan Ramzan Sheikh for foiling militant attack?

  1. ((a))

    Kirti Chakra

  2. ((b))

    Ashok Chakra

  3. ((c))

    Shaurya Chakra

  4. ((d))

    Maha Vir Chakra

Show Answer
Answer: ((a))

Kirti Chakra

64

In a megger, controlling torque is provided by-

  1. ((a))

    Gravity

  2. ((b))

    Spring

  3. ((c))

    Eddy current

  4. ((d))

    Coil

Show Answer
Answer: ((a))

Gravity

65

A quantity whose magnitude has a definite repeating time cycle is called a-

  1. ((a))

    Transient

  2. ((b))

    Steady state aperiodic

  3. ((c))

    Transient state periodic

  4. ((d))

    Steady state periodic

Show Answer
Answer: ((a))

Transient

66

Kuppuswamy Naidu Trophy is associated with which sport?

  1. ((a))

    Badminton

  2. ((b))

    Hockey

  3. ((c))

    Football

  4. ((d))

    Cricket

Show Answer
Answer: ((a))

Badminton

67

Open circuit test on transformers is conducted to determine which of the following?

  1. ((a))

    Eddy current losses

  2. ((b))

    Core losses

  3. ((c))

    Copper losses

  4. ((d))

    Hysteresis losses

Show Answer
Answer: ((a))

Eddy current losses

68

The rotating magnetic field in a three-phase, 6-poles, 50 Hz slip ring induction motor will rotate at-

  1. ((a))

    1500 RPM

  2. ((b))

    1000 RPM

  3. ((c))

    2000 RPM

  4. ((d))

    1200 RPM

Show Answer
Answer: ((a))

1500 RPM

69

At resonance frequency, the inductive reactance value is the same as-

  1. ((a))

    Impedance of the circuit

  2. ((b))

    Reactance of the capacitor

  3. ((c))

    Resistance of the circuit

  4. ((d))

    Reactance of the coil

Show Answer
Answer: ((a))

Impedance of the circuit

70

The synchronous speed of a three phase induction motor having 20 poles and connected to a 50 Hz source is-

  1. ((a))

    1200 RPM

  2. ((b))

    1000 RPM

  3. ((c))

    600 RPM

  4. ((d))

    300 RPM

Show Answer
Answer: ((a))

1200 RPM

71

Which of the following is a type of trojan?

  1. ((a))

    PSW

  2. ((b))

    All of the options

  3. ((c))

    ArcBomb

  4. ((d))

    Proxy

Show Answer
Answer: ((a))

PSW

72

What is the purpose of shading coil in a shaded pole motor?

  1. ((a))

    Reduce rotational losses

  2. ((b))

    Reduce friction loss

  3. ((c))

    Reduce rough commutation

  4. ((d))

    Produce rotating magnetic field

Show Answer
Answer: ((a))

Reduce rotational losses

73

We can start MS-word by typing ________ in the Run Dialog box.

  1. ((a))

    docx.exe

  2. ((b))

    msword.exe

  3. ((c))

    winword.exe

  4. ((d))

    word.exe

Show Answer
Answer: ((a))

docx.exe

74

Which of the following semiconductor devices can be used for controlling the speed of a DC motor?

  1. ((a))

    Thermistor

  2. ((b))

    Thyratron

  3. ((c))

    Thyristor

  4. ((d))

    Transistor

Show Answer
Answer: ((a))

Thermistor

75

The rotor current frequency in a slip-ring induction motor depends on-

  1. ((a))

    Rotor conductor

  2. ((b))

    Rotor inductor

  3. ((c))

    Amount of slip

  4. ((d))

    Inductive reactance

Show Answer
Answer: ((a))

Rotor conductor

76

Equipment earthing is necessary to give protection against-

  1. ((a))

    Overloading

  2. ((b))

    The danger of electric shocks

  3. ((c))

    The high temperature of the conductors

  4. ((d))

    Voltage fluctuation

Show Answer
Answer: ((a))

Overloading

77

When did Bihar bifurcate from Bengal and some parts of Chota Nagpur merge into Bengal?

  1. ((a))

    1915

  2. ((b))

    1912

  3. ((c))

    1914

  4. ((d))

    1913

Show Answer
Answer: ((a))

1915

78

Good earth continuity implies-

  1. ((a))

    Open circuit

  2. ((b))

    Low resistance

  3. ((c))

    Low conductivity

  4. ((d))

    High resistance

Show Answer
Answer: ((a))

Open circuit

79

The elements belonging to the same group of periodic table have the same-

  1. ((a))

    Number of neutrons

  2. ((b))

    Number of electrons in the outermost shell

  3. ((c))

    Number of protons

  4. ((d))

    Number of electrons

Show Answer
Answer: ((a))

Number of neutrons

80

Constellation Cassiopeia has a shape of a distorted English alphabet. Which alphabet is it?

  1. ((a))

    W or M

  2. ((b))

    R

  3. ((c))

    A

  4. ((d))

    Q

Show Answer
Answer: ((a))

W or M

81

In a 2 pole lap winding DC machine, the resistance of one conductor is 2 Ω and the total number of conductors is 100. Find the total armature resistance.

  1. ((a))

    200 Ω

  2. ((b))

    50 Ω

  3. ((c))

    10 Ω

  4. ((d))

    100 Ω

Show Answer
Answer: ((a))

200 Ω

82

Which of the following is NOT considered to be a computer peripheral device?

  1. ((a))

    CPU

  2. ((b))

    Keyboard

  3. ((c))

    Monitor

  4. ((d))

    Speakers

Show Answer
Answer: ((a))

CPU

83

Which of the following motors is employed in hair dryers?

  1. ((a))

    Capacitor start induction motor

  2. ((b))

    Shaded pole induction motor

  3. ((c))

    Split phase induction motor

  4. ((d))

    Capacitor start capacitor run induction motor

Show Answer
Answer: ((a))

Capacitor start induction motor

84

Three-phase transformer contains-

  1. ((a))

    One primary and three secondary windings

  2. ((b))

    Three primary and one secondary windings

  3. ((c))

    Three primary and two secondary windings

  4. ((d))

    Three primary and three secondary windings

Show Answer
Answer: ((a))

One primary and three secondary windings

85

Give an example of a metal which is a liquid at room temperature.

  1. ((a))

    Iodine

  2. ((b))

    Sodium

  3. ((c))

    Mercury 

  4. ((d))

    Calcium

Show Answer
Answer: ((a))

Iodine

86

When is Ozone day observed?

  1. ((a))

    22 September

  2. ((b))

    18 September

  3. ((c))

    16 September

  4. ((d))

    19 September

Show Answer
Answer: ((a))

22 September

87

A cluster of charges with an electric dipole moment is often called-

  1. ((a))

    Electric susceptibility

  2. ((b))

    Eddy currents

  3. ((c))

    Polarization

  4. ((d))

    Electric dipoles

Show Answer
Answer: ((a))

Electric susceptibility

88

With which of the following games is the term 'Ground Stroke' associated?

  1. ((a))

    Cricket

  2. ((b))

    Hockey

  3. ((c))

    Badminton

  4. ((d))

    Tennis

Show Answer
Answer: ((a))

Cricket

89

___________ oscillator has the best frequency stability and accuracy.

  1. ((a))

    Hartley

  2. ((b))

    Colpitts

  3. ((c))

    Tickler feedback

  4. ((d))

    Crystal controlled

Show Answer
Answer: ((a))

Hartley

90

If the load impedance in three phases are not equal to the load then it is said to be-

  1. ((a))

    Balanced supply

  2. ((b))

    Balanced load

  3. ((c))

    Unbalanced supply

  4. ((d))

    Unbalanced load

Show Answer
Answer: ((a))

Balanced supply

91

Humidity is the amount of _______ present in air.

  1. ((a))

    Smoke

  2. ((b))

    Water vapour

  3. ((c))

    Carbon dioxide

  4. ((d))

    Dust

Show Answer
Answer: ((a))

Smoke

92

__________ provides an interface between a process and operating system to allow user-level processes to request services of the operating system.

  1. ((a))

    Library

  2. ((b))

    Assembly instructions

  3. ((c))

    API

  4. ((d))

    System calls

Show Answer
Answer: ((a))

Library

93

Isotope of hydrogen are-

  1. ((a))

    2H2, 2H2, 1H3

  2. ((b))

    1H1, 1H2, 1H3

  3. ((c))

    1H1, 2H1, 3H1

  4. ((d))

    1H1, 1H2,2H1

Show Answer
Answer: ((a))

2H2, 2H2, 1H3

94

________ extinguishers are ideal for places with a lot of electrical equipment such as offices or server rooms.

  1. ((a))

    Cl2

  2. ((b))

    SO2

  3. ((c))

    CO2

  4. ((d))

    N2S

Show Answer
Answer: ((a))

Cl2

95

The unit of current is-

  1. ((a))

    Ampere

  2. ((b))

    Hertz

  3. ((c))

    Volt

  4. ((d))

    Coulomb

Show Answer
Answer: ((a))

Ampere

96

Automated Teller Machines (ATMs) set up, owned and operated by non-bank entities are called-

  1. ((a))

    Yellow Label ATMs

  2. ((b))

    Black Label ATMs

  3. ((c))

    White Label ATMs

  4. ((d))

    Grey Label ATMs

Show Answer
Answer: ((a))

Yellow Label ATMs

97

Working voltage of medium grade cables is-

  1. ((a))

    650 V

  2. ((b))

    100 V

  3. ((c))

    400 V

  4. ((d))

    500 V

Show Answer
Answer: ((a))

650 V

98

Which of the following taxes is levied by the Union and collected and appropriated by the States?

  1. ((a))

    Estate Duty

  2. ((b))

    Stamp Duty

  3. ((c))

    Taxes on Newspapers

  4. ((d))

    Passenger and Goods Tax

Show Answer
Answer: ((a))

Estate Duty

99

If a 100 Watts bulb is ON for 10 hours, then what will be the amount of electricity consumed?

  1. ((a))

    100 Watts per hour

  2. ((b))

    300 Watts

  3. ((c))

    1 kWh

  4. ((d))

    1500 Watts

Show Answer
Answer: ((a))

100 Watts per hour

100

Leakage coefficient is denoted by-

  1. ((a))

    μ 

  2. ((b))

    Ω

  3. ((c))

    λ

  4. ((d))

    ϕ 

Show Answer
Answer: ((a))

μ 

101

The speed with which the turbo alternators operate are-

  1. ((a))

    3000 RPM

  2. ((b))

    1000 RPM

  3. ((c))

    5000 RPM

  4. ((d))

    1500 RPM

Show Answer
Answer: ((a))

3000 RPM

102

The Universal Declaration of Human Rights was proclaimed by the UN in the year:

  1. ((a))

    1947

  2. ((b))

    1949

  3. ((c))

    1948

  4. ((d))

    1946

Show Answer
Answer: ((a))

1947

103

Which of the following value of a complex current wave is equal to the square root of the sum of the square of the RMS value of the individual components?

  1. ((a))

    Mean value

  2. ((b))

    Average value

  3. ((c))

    Peak value

  4. ((d))

    RMS value

Show Answer
Answer: ((a))

Mean value

104

According to Kirchhoff's current law, the algebraic sum of current leaving a node in a lumped parameter circuit is equal to-

  1. ((a))

    Infinite

  2. ((b))

    Zero

  3. ((c))

    Value of voltage drop in the circuit

  4. ((d))

    Unity

Show Answer
Answer: ((a))

Infinite

105

Relative permeability of a substance is less than the permeability of free space is known as-

  1. ((a))

    Paramagnetic

  2. ((b))

    Ferromagnetic

  3. ((c))

    Non magnetic

  4. ((d))

    Diamagnetic

Show Answer
Answer: ((a))

Paramagnetic

106

The phenomenon of occurrence of additional species found in the ecotone or transitional zone between adjoining ecosystems is known as-

  1. ((a))

    Coolidge effect

  2. ((b))

    Raman effect

  3. ((c))

    Root effect

  4. ((d))

    Edge effect

Show Answer
Answer: ((a))

Coolidge effect

107

HTML is the language used to create ________.

  1. ((a))

    High level program

  2. ((b))

    Machine language program

  3. ((c))

    Web pages

  4. ((d))

    Web server

Show Answer
Answer: ((a))

High level program

108

If a three-phase motor operates with only two-phases, it is called single-phasing. It will ultimately make the motor _______.

  1. ((a))

    To burn out

  2. ((b))

    To carry no load

  3. ((c))

    To run efficiently

  4. ((d))

    To run with triple speed

Show Answer
Answer: ((a))

To burn out

109

Who among the following constructed the Kailasanatha Temple at Kanchi?

  1. ((a))

    Narasimhavarman II

  2. ((b))

    Mahendravarman

  3. ((c))

    Bhaskaravarman

  4. ((d))

    Narasimhavarman I

Show Answer
Answer: ((a))

Narasimhavarman II

110

In which of the following transmission lines is capacitance effect negligible?

  1. ((a))

    Both long transmission lines and short 

  2. ((b))

    Short transmission lines transmission lines

  3. ((c))

    Long transmission lines

  4. ((d))

    Medium transmission lines

Show Answer
Answer: ((a))

Both long transmission lines and short 

111

Which of the following delays are present in packet switching?

  1. ((a))

    Transmission Delay

  2. ((b))

    Processing Delay

  3. ((c))

    Queuing Delay

  4. ((d))

    All of the options

Show Answer
Answer: ((a))

Transmission Delay

112

Which of the following damages buildings by corroding them slowly?

  1. ((a))

    Acid rain

  2. ((b))

    Water pollution

  3. ((c))

    Noise pollution

  4. ((d))

    Light pollution

Show Answer
Answer: ((a))

Acid rain

113

Resonant Grounding is also known as-

  1. ((a))

    Resistance earthing

  2. ((b))

    Solid earthing

  3. ((c))

    Reactance earthing

  4. ((d))

    Arc suppression coil earthing

Show Answer
Answer: ((a))

Resistance earthing

114

Two way switches are used in ____ wiring.

  1. ((a))

    Conduit

  2. ((b))

    Batten

  3. ((c))

    Lead sheathed

  4. ((d))

    Staircase

Show Answer
Answer: ((a))

Conduit

115

Which of the following wirings is suitable for lighting in low voltage installations?

  1. ((a))

    Concealed conduit wiring

  2. ((b))

    TRS wiring

  3. ((c))

    Surface conduit wiring

  4. ((d))

    Casing wiring

Show Answer
Answer: ((a))

Concealed conduit wiring

116

Which of the following is NOT a standard transmission voltage?

  1. ((a))

    132 kV

  2. ((b))

    400 kV

  3. ((c))

    765 kV

  4. ((d))

    222 kV

Show Answer
Answer: ((a))

132 kV

117

In P-type semiconductor, the majority carriers are-

  1. ((a))

    Valence electrons

  2. ((b))

    Free electrons

  3. ((c))

    Holes

  4. ((d))

    Neutrons

Show Answer
Answer: ((a))

Valence electrons

118

What is the SI unit of electric charge?

  1. ((a))

    Joule (J)

  2. ((b))

    Coulomb (C)

  3. ((c))

    Ampere (A)

  4. ((d))

    Volt (V)

Show Answer
Answer: ((a))

Joule (J)

119

To produce sound waves of different pitch, objects of different sizes and conditions are made to vibrate at different-

  1. ((a))

    Quality

  2. ((b))

    Type

  3. ((c))

    Time

  4. ((d))

    Frequencies

Show Answer
Answer: ((a))

Quality

120

The fusing factor of protective devices for medium level load is-

  1. ((a))

    3.45

  2. ((b))

    2.38

  3. ((c))

    0.95

  4. ((d))

    1.45

Show Answer
Answer: ((a))

3.45

121

Calculate the total DC resistance of a 100 metre roll of 2.5 mm2 copper wire if the resistivity of copper at 20° C is 1.72 × 10-8 Ω metre

  1. ((a))

    0.214 Ω

  2. ((b))

    0.867 Ω

  3. ((c))

    0.713 Ω

  4. ((d))

    0.688 Ω

Show Answer
Answer: ((a))

0.214 Ω

122

For domestic wiring, the most extensively used material is-

  1. ((a))

    Neither copper nor aluminium

  2. ((b))

    Copper

  3. ((c))

    Aluminium

  4. ((d))

    Copper or aluminium

Show Answer
Answer: ((a))

Neither copper nor aluminium

123

The disease which wiped out one third of the population of Europe in the 12th and 13th centuries was-

  1. ((a))

    Diphtheria

  2. ((b))

    Plague

  3. ((c))

    Meningitis

  4. ((d))

    Cholera

Show Answer
Answer: ((a))

Diphtheria

124

Where is the Gulf of Mannar Marine National Park located?

  1. ((a))

    Karnataka

  2. ((b))

    Gujarat

  3. ((c))

    Tamil Nadu

  4. ((d))

    Andhra Pradesh

Show Answer
Answer: ((a))

Karnataka

125

A DC motor having full load speed of 750 RPM and speed regulation of 10% will have no-load speed of_______.

  1. ((a))

    825 RPM

  2. ((b))

    700 RPM

  3. ((c))

    675 RPM

  4. ((d))

    900 RPM

Show Answer
Answer: ((a))

825 RPM

126

Which planet is called Earth's twin sister?

  1. ((a))

    Mars

  2. ((b))

    Jupiter

  3. ((c))

    Venus

  4. ((d))

    Sun

Show Answer
Answer: ((a))

Mars

127

When checked with an ohm meter an open resistor reads-

  1. ((a))

    Low but not zero

  2. ((b))

    Infinite

  3. ((c))

    Zero

  4. ((d))

    High but within tolerance

Show Answer
Answer: ((a))

Low but not zero

128

The centripetal force required to keep the moon in its orbit is provided by which force?

  1. ((a))

    Mechanical force

  2. ((b))

    Friction force

  3. ((c))

    Spring force

  4. ((d))

    Gravitational force of earth

Show Answer
Answer: ((a))

Mechanical force

129

A gas jar contains 1.7 g of ammonia gas. Calculate the no(number) of mole present in the gas jar?

  1. ((a))

    0.01 mole

  2. ((b))

    1 mole

  3. ((c))

    0.1 mole

  4. ((d))

    0.2 mole

Show Answer
Answer: ((a))

0.01 mole

130

Which device uses infrared signal to operate or control other devices remotely?

  1. ((a))

    Touchpad

  2. ((b))

    Mouse

  3. ((c))

    Remote control

  4. ((d))

    Sensor

Show Answer
Answer: ((a))

Touchpad

131

Which of the following is NOT a marine pollutant?

  1. ((a))

    Plastics

  2. ((b))

    Dissolved oxygen

  3. ((c))

    Oil

  4. ((d))

    All of the options

Show Answer
Answer: ((a))

Plastics

132

Which of the following is/are contaminated by the wastes produced from factories?

  1. ((a))

    Soil

  2. ((b))

    Air

  3. ((c))

    Water

  4. ((d))

    All of the options

Show Answer
Answer: ((a))

Soil

133

Which of the following devices is suitable for the removal of gaseous pollutants?

  1. ((a))

    Electrostatic precipitator

  2. ((b))

    Fabric filter

  3. ((c))

    Wet collector (scrubber)

  4. ((d))

    Cyclone separator

Show Answer
Answer: ((a))

Electrostatic precipitator

134

The spindle of the moving system in a PMMC instrument is supported at both ends with the help of-

  1. ((a))

    Jewelled bearings

  2. ((b))

    Steel bearings

  3. ((c))

    Gun metal bearings

  4. ((d))

    Bush bearings

Show Answer
Answer: ((a))

Jewelled bearings

135

Which of the following changes take place when fats and oil are oxidised?

  1. ((a))

    They become rancid and give good smell

  2. ((b))

    They remain unaffected

  3. ((c))

    They become rancid and their smell and taste 

  4. ((d))

    They become better in taste change

Show Answer
Answer: ((a))

They become rancid and give good smell

136

To measure which of the following is Wheatstone bridge method used?

  1. ((a))

    Resistance

  2. ((b))

    Voltage

  3. ((c))

    Power

  4. ((d))

    Current

Show Answer
Answer: ((a))

Resistance

137

Before starting electroplating, what action is to be necessarily taken?

  1. ((a))

    Buffing

  2. ((b))

    Soldering

  3. ((c))

    Cleaning

  4. ((d))

    Polishing

Show Answer
Answer: ((a))

Buffing

138

The base of BJT is-

  1. ((a))

    Not doped

  2. ((b))

    Moderately doped

  3. ((c))

    Heavily doped

  4. ((d))

    Lightly doped

Show Answer
Answer: ((a))

Not doped

139

What is the primary function of a choke in a tube light circuit?

  1. ((a))

    Limit the starting current

  2. ((b))

    Limit the current after starting

  3. ((c))

    Heat up the filament

  4. ((d))

    Induce high voltage

Show Answer
Answer: ((a))

Limit the starting current

140

Alternator is used to generate-

  1. ((a))

    DC

  2. ((b))

    Light energy

  3. ((c))

    AC

  4. ((d))

    Both AC and DC

Show Answer
Answer: ((a))

DC

141

Which of the following effects is used in Wattmeter?

  1. ((a))

    Electrostatic effect

  2. ((b))

    Chemical effect

  3. ((c))

    Thermal effect

  4. ((d))

    Electrodynamic effect

Show Answer
Answer: ((a))

Electrostatic effect

142

A P-N-P-N diode-

  1. ((a))

    Is always made of germanium

  2. ((b))

    May be made of either silicon or germanium

  3. ((c))

    Is always made of silicon

  4. ((d))

    May be made of any semiconductor

Show Answer
Answer: ((a))

Is always made of germanium

143

Which of the following states will get a new Railway Zone, which is the 18th zone in India?

  1. ((a))

    Andhra Pradesh

  2. ((b))

    Maharashtra

  3. ((c))

    West Bengal

  4. ((d))

    Kerala

Show Answer
Answer: ((a))

Andhra Pradesh

144

The full form of ACSR is-

  1. ((a))

    All Copper Standard Reinforced

  2. ((b))

    Aluminium Copper Steel Reinforced

  3. ((c))

    Aluminium Conductor Steel Reinforced

  4. ((d))

    All Copper Steel Reinforced

Show Answer
Answer: ((a))

All Copper Standard Reinforced

145

The property of the coil of generating induced EMF due to the changing flux linked with it is called-

  1. ((a))

    Capacitance

  2. ((b))

    Reactance

  3. ((c))

    Inductance

  4. ((d))

    Resistance

Show Answer
Answer: ((a))

Capacitance

146

The wire of 2 SWG is equivalent to diameter of-

  1. ((a))

    6.4 mm

  2. ((b))

    7.01 mm

  3. ((c))

    5.89 mm

  4. ((d))

    5.38 mm

Show Answer
Answer: ((a))

6.4 mm

147

In an air blast circuit breaker, why is compressed air used?

  1. ((a))

    Closing the contacts

  2. ((b))

    Cooling the circuit breaker

  3. ((c))

    Opening the contacts

  4. ((d))

    Quenching the arc

Show Answer
Answer: ((a))

Closing the contacts

148

A substance that has a high retentiveness can be used for the manufacture of-

  1. ((a))

    Electromagnets

  2. ((b))

    Temporary magnets

  3. ((c))

    Paramagnets

  4. ((d))

    Permanent magnets

Show Answer
Answer: ((a))

Electromagnets

149

The EMF induced in a coil due to the change of its own flux linked with it is called-

  1. ((a))

    Self induced EMF

  2. ((b))

    Statically induced EMF

  3. ((c))

    Dynamically induced EMF

  4. ((d))

    Mutually induced EMF

Show Answer
Answer: ((a))

Self induced EMF

150

What are the products of neuteralisation reaction?

  1. ((a))

    Acid and salt

  2. ((b))

    Base and salt

  3. ((c))

    Salt and water

  4. ((d))

    Acid and base

Show Answer
Answer: ((a))

Acid and salt

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