Official Paper

RRB JE EE 19 Sept 2019 (Shift 2) CBT 2 Official Paper (Previous Year Paper)

150 questions · 120 minutes · with answers · free

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Test (150 questions)

1

A ray of light passing through principal focus of a convex lens after refraction will emerge

  1. ((a))

    Through the principal focus 

  2. ((b))

    Without any deviation

  3. ((c))

    Parallel to the principal axis

  4. ((d))

    Through the centre of curvature

Show Answer
Answer: ((a))

Through the principal focus 

2

Odisha shares its border with ________ Indian states. 

  1. ((a))

    Four

  2. ((b))

    Six

  3. ((c))

    Five

  4. ((d))

    Three

Show Answer
Answer: ((a))

Four

3

With which sport is the term 'Beamer' associated?

  1. ((a))

    Cricket

  2. ((b))

    Football

  3. ((c))

    Chess

  4. ((d))

    Hockey

Show Answer
Answer: ((a))

Cricket

4

When was 'Antyodaya Anna Yojana' launched?

  1. ((a))

    October 2000

  2. ((b))

    August 2001

  3. ((c))

    October 2002

  4. ((d))

    December 2000

Show Answer
Answer: ((a))

October 2000

5

Which great personality of the world was also known as 'Fuehrer'?

  1. ((a))

    Napoleon Bonaparte

  2. ((b))

    Vladimir Lenin

  3. ((c))

    Adolf Hitler

  4. ((d))

    Joseph Stalin

Show Answer
Answer: ((a))

Napoleon Bonaparte

6

The rate of change of momentum of an object is

  1. ((a))

    Directly proportional to the resultant force applied

  2. ((b))

    Equal to displacement of the object

  3. ((c))

    Inversely proportional to the resultant force applied

  4. ((d))

    Equal to its mass

Show Answer
Answer: ((a))

Directly proportional to the resultant force applied

7

Who is the present CBI Director?  (As of March 2018)

  1. ((a))

    Alok Verma

  2. ((b))

    Rakesh Asthana

  3. ((c))

    Sanjay Mathur

  4. ((d))

    Rishi Kumar Shukla

Show Answer
Answer: ((a))

Alok Verma

8

In 2019, which country launched a new export route to India through the Chabahar Port?

  1. ((a))

    Bhutan

  2. ((b))

    Nepal 

  3. ((c))

    Pakistan

  4. ((d))

    Afghanistan

Show Answer
Answer: ((a))

Bhutan

9

With which of the following sports is Black Pearl associated?

  1. ((a))

    Snooker

  2. ((b))

    Golf  

  3. ((c))

    Soccer

  4. ((d))

    Horse Racing

Show Answer
Answer: ((a))

Snooker

10

A group of stars, which has a recognisable shape is called as

  1. ((a))

    Comet

  2. ((b))

    Constellation

  3. ((c))

    Meteorite

  4. ((d))

    Meteoroid

Show Answer
Answer: ((a))

Comet

11

If the maximum value of a sine wave AC voltage is 10 V, then its RMS value is

  1. ((a))

    3.142 V

  2. ((b))

    1.732 V

  3. ((c))

    1.414 V

  4. ((d))

    7.070 V

Show Answer
Answer: ((a))

3.142 V

12

Calcium oxide and water combine to form calcium hydroxide. This is an example of ______ reaction.

  1. ((a))

    Both combination reaction and exothermic reaction

  2. ((b))

    Combination reaction

  3. ((c))

    Endothermic reaction

  4. ((d))

    Exothermic reaction

Show Answer
Answer: ((a))

Both combination reaction and exothermic reaction

13

Which country is the host of ICC Women's T20 World Cup 2020?

  1. ((a))

    India

  2. ((b))

    England

  3. ((c))

    West Indies

  4. ((d))

    Australia

Show Answer
Answer: ((a))

India

14

If the number of poles is 4 and number of slots is 24, then the pole pitch will be

  1. ((a))

    6 slots

  2. ((b))

    4 slots

  3. ((c))

    12 slots

  4. ((d))

    8 slots

Show Answer
Answer: ((a))

6 slots

15

Which of the following is difficult without friction?

  1. ((a))

    Holding a glass tumbler

  2. ((b))

    The movement of the door

  3. ((c))

    Moving a heavy box from one place to another

  4. ((d))

    Playing carrom

Show Answer
Answer: ((a))

Holding a glass tumbler

16

Fusing factor is defined as the ratio between the

  1. ((a))

    Maximum fusing current and rated current 

  2. ((b))

    Minimum fusing current and rated current

  3. ((c))

    Maximum fusing current and rated voltage

  4. ((d))

    Minimum fusing current and rated voltage

Show Answer
Answer: ((a))

Maximum fusing current and rated current 

17

Who has been appointed as the Chairman of India’s Lokpal or anti-corruption ombudsman? (As of April 2019)

  1. ((a))

    Mehr Chand Mahajan

  2. ((b))

    Bijan Kumar Mukherjee

  3. ((c))

    Pinaki Chandra Ghose

  4. ((d))

    Sudhi Ranjan Das

Show Answer
Answer: ((a))

Mehr Chand Mahajan

18

Convert 373⁰ C into Kelvin scale. 

  1. ((a))

    746 K

  2. ((b))

    646 K

  3. ((c))

    546 K

  4. ((d))

    846 K

Show Answer
Answer: ((a))

746 K

19

A coil carrying current behaves as a/an

  1. ((a))

    Dynamo

  2. ((b))

    Motor

  3. ((c))

    Magnet

  4. ((d))

    Electric dipole

Show Answer
Answer: ((a))

Dynamo

20

With the increase in atomic number in period

  1. ((a))

    Metallic character decreases

  2. ((b))

    Metallic character increases

  3. ((c))

    Chemical reactivity increases

  4. ((d))

    Chemical reactivity decreases

Show Answer
Answer: ((a))

Metallic character decreases

21

Relative permittivity can be measured by _______ bridge. 

  1. ((a))

    Schering

  2. ((b))

    De Sauty

  3. ((c))

    Wheatstone

  4. ((d))

    Anderson

Show Answer
Answer: ((a))

Schering

22

Nuclides which have same mass number are called

  1. ((a))

    Isotones 

  2. ((b))

    Isobars

  3. ((c))

    Isotopes

  4. ((d))

    Isomers

Show Answer
Answer: ((a))

Isotones 

23

A voltmeter using thermocouple measures

  1. ((a))

    Average value

  2. ((b))

    Peak to peak value

  3. ((c))

    Peak value

  4. ((d))

    RMS value

Show Answer
Answer: ((a))

Average value

24

To measure which of the following is an ammeter used? 

  1. ((a))

    Resistance

  2. ((b))

    Electric current

  3. ((c))

    Electric charge

  4. ((d))

    Potential difference

Show Answer
Answer: ((a))

Resistance

25

The brain interprets the frequency of an emitted sound called

  1. ((a))

    Wave velocity

  2. ((b))

    Pitch

  3. ((c))

    Wavelength

  4. ((d))

    Oscillation

Show Answer
Answer: ((a))

Wave velocity

26

What is the name of world's first robot citizen created in October 2017?

  1. ((a))

    Dennis

  2. ((b))

    Stella

  3. ((c))

    Michael

  4. ((d))

    Sophia

Show Answer
Answer: ((a))

Dennis

27

The Cab Tyre Sheathed Cable (C.T.S cable) is also known as

  1. ((a))

    V.I.R cable

  2. ((b))

    P.V.C cable

  3. ((c))

    X.L.P.E cable

  4. ((d))

    T.R.S cable

Show Answer
Answer: ((a))

V.I.R cable

28

The fuse operates due to the ________ effect of current.

  1. ((a))

    Magnetic

  2. ((b))

    Chemical

  3. ((c))

    Electrostatic

  4. ((d))

    Heating

Show Answer
Answer: ((a))

Magnetic

29

The difference of potential between the two terminals of a cell in an open circuit is called the ________ of a cell.

  1. ((a))

    Terminal voltage

  2. ((b))

    EMF

  3. ((c))

    Power

  4. ((d))

    Charge

Show Answer
Answer: ((a))

Terminal voltage

30

Which of the following lamps give(s) nearly monochromatic light? 

  1. ((a))

    Tube light

  2. ((b))

    Sodium vapour lamp

  3. ((c))

    GLS lamp

  4. ((d))

    Mercury vapour lamp

Show Answer
Answer: ((a))

Tube light

31

Light is produced in electric discharge lamps by

  1. ((a))

    Magnetic effect of current

  2. ((b))

    Heating effect of current

  3. ((c))

    Ionisation in a gas or vapour

  4. ((d))

    Carbon electrodes

Show Answer
Answer: ((a))

Magnetic effect of current

32

Two 300 μH coils in series without mutual coupling have a total inductance of

  1. ((a))

    150 μH

  2. ((b))

    600 μH

  3. ((c))

    300 μH

  4. ((d))

    75 μH

Show Answer
Answer: ((a))

150 μH

33

Which of the following is a safety device connected in series to the circuit?

  1. ((a))

    Wall bracket

  2. ((b))

    Reflectors

  3. ((c))

    Ceiling rose

  4. ((d))

    Fuse

Show Answer
Answer: ((a))

Wall bracket

34

If three 5 μF capacitors are connected in parallel, then the net capacitance is

  1. ((a))

    25 μF

  2. ((b))

    10 μF

  3. ((c))

    15 μF

  4. ((d))

    125 μf

Show Answer
Answer: ((a))

25 μF

35

Which part of the transformer is subjected to maximum heating?

  1. ((a))

    Winding

  2. ((b))

    Core

  3. ((c))

    Frame

  4. ((d))

    Oil

Show Answer
Answer: ((a))

Winding

36

Delay fuses are used for the protection of

  1. ((a))

    Transformers

  2. ((b))

    Both motors and transformers

  3. ((c))

    Motors

  4. ((d))

    Semiconductor devices

Show Answer
Answer: ((a))

Transformers

37

Filament lamps operate normally at a power factor of

  1. ((a))

    0.8 lagging

  2. ((b))

    0.5 lagging

  3. ((c))

    Unity

  4. ((d))

    0.5 leading

Show Answer
Answer: ((a))

0.8 lagging

38

Which of the following expressions gives the Joule's law of heating?

  1. ((a))

    H α IRt

  2. ((b))

    H α I2R/t

  3. ((c))

    H α I2Rt

  4. ((d))

    H α IR2 t

Show Answer
Answer: ((a))

H α IRt

39

According to Kirchoff's law, the sum of the currents entering a point in the circuit is equal to the

  1. ((a))

    Sum of the voltages around the loop

  2. ((b))

    Sum of the currents leaving that point

  3. ((c))

    Sum of applied voltages

  4. ((d))

    Sum of the impedances in the circuit

Show Answer
Answer: ((a))

Sum of the voltages around the loop

40

The connected load of a consumer is 3 kW and his maximum demand is 1.5 kW. The demand factor of the consumer is

  1. ((a))

    0.5

  2. ((b))

    0.25

  3. ((c))

    0.33

  4. ((d))

    1.33

Show Answer
Answer: ((a))

0.5

41

The property of a material that describes the ease with which a magnetic flux is established in the component is

  1. ((a))

    Reluctance

  2. ((b))

    Retentivity

  3. ((c))

    Permeability

  4. ((d))

    Coercivity

Show Answer
Answer: ((a))

Reluctance

42

A megger is exclusively designed for measuring

  1. ((a))

    Very low resistance

  2. ((b))

    Very high resistance

  3. ((c))

    Ground faults in power lines

  4. ((d))

    Over load on DC motors

Show Answer
Answer: ((a))

Very low resistance

43

Which of the following is an unexcited single-phase synchronous motor?

  1. ((a))

    Repulsion motor

  2. ((b))

    Reluctance motor

  3. ((c))

    AC series motor

  4. ((d))

    Universal motor

Show Answer
Answer: ((a))

Repulsion motor

44

In a DC machine, commutator perform(s) which of the following functions?

  1. ((a))

    Supply starting current or torque

  2. ((b))

    Converting DC into AC

  3. ((c))

    Both conversion of AC into DC and vice versa

  4. ((d))

    Converting AC into DC

Show Answer
Answer: ((a))

Supply starting current or torque

45

Which of the following is the best method for temporary wiring?

  1. ((a))

    Casing wiring

  2. ((b))

    CTS wiring

  3. ((c))

    TRS wiring

  4. ((d))

    Cleat wiring

Show Answer
Answer: ((a))

Casing wiring

46

Which of the following appliances does/do NOT require earth connection for safety? 

  1. ((a))

    Vacuum cleaner

  2. ((b))

    Refrigerator

  3. ((c))

    Electric cooker

  4. ((d))

    Washing machine

Show Answer
Answer: ((a))

Vacuum cleaner

47

The phase voltage of a star-connected, three-phase circuit is 200 V. The line voltage will be

  1. ((a))

    230 V

  2. ((b))

    220 V

  3. ((c))

    346.4 V

  4. ((d))

    173.2 V

Show Answer
Answer: ((a))

230 V

48

All switches should be installed on the

  1. ((a))

    Blue wire

  2. ((b))

    Earth wire

  3. ((c))

    Neutral wire

  4. ((d))

    Live wire

Show Answer
Answer: ((a))

Blue wire

49

TRS cables on batten are suitable for

  1. ((a))

    High voltage

  2. ((b))

    Ultra high voltage

  3. ((c))

    Low voltage

  4. ((d))

    Medium voltage

Show Answer
Answer: ((a))

High voltage

50

The voltage induced in the three-phase alternator of each winding is ______ with the voltages in the other two windings.

  1. ((a))

    120° out of phase

  2. ((b))

    In phase

  3. ((c))

    180° out of phase

  4. ((d))

    150° out of phase

Show Answer
Answer: ((a))

120° out of phase

51

In DC machine, shape of main field flux distribution is

  1. ((a))

    Peaky in nature

  2. ((b))

    Saddle shape

  3. ((c))

    Trapezoidal

  4. ((d))

    Triangular

Show Answer
Answer: ((a))

Peaky in nature

52

The output current verses input voltage transfer characteristics of an n-channel JFET is such that there is-

  1. ((a))

    No cut-off input voltage

  2. ((b))

    Zero current flow at zero input voltage bias

  3. ((c))

    Current flow only when negative input cut-off voltage bias is crossed

  4. ((d))

    Current flow only when a positive input threshold voltage is crossed

Show Answer
Answer: ((a))

No cut-off input voltage

53

What is an oscillator?

  1. ((a))

    A rectifier

  2. ((b))

    A generator

  3. ((c))

    An amplifier with positive feedback

  4. ((d))

    An amplifier with negative feedback

Show Answer
Answer: ((a))

A rectifier

54

Two wattmeter method is used to measure three-phase _____ load.

  1. ((a))

    Unbalanced

  2. ((b))

    Only capacitive

  3. ((c))

    Balanced

  4. ((d))

    Both balanced and unbalanced

Show Answer
Answer: ((a))

Unbalanced

55

MAC address is of:

  1. ((a))

    42 bits

  2. ((b))

    36 bits

  3. ((c))

    48 bits

  4. ((d))

    24 bits

Show Answer
Answer: ((a))

42 bits

56

The distance between one wave crest to the next or from trough is called

  1. ((a))

    Time period

  2. ((b))

    Amplitude

  3. ((c))

    Frequency

  4. ((d))

    Wavelength

Show Answer
Answer: ((a))

Time period

57

Which special type of diode is capable of both amplification and oscillation?

  1. ((a))

    Point contact diode 

  2. ((b))

    Zener diode 

  3. ((c))

    Junction diode

  4. ((d))

    Tunnel diode

Show Answer
Answer: ((a))

Point contact diode 

58

The unit of magnetic flux density is

  1. ((a))

    Farad/metre

  2. ((b))

    Ampere/metre

  3. ((c))

    Ohm/metre

  4. ((d))

    Tesla

Show Answer
Answer: ((a))

Farad/metre

59

Which of the following is used to cut any text or field in MS-Excel? 

  1. ((a))

    Ctrl + A

  2. ((b))

    Ctrl + X

  3. ((c))

    Alt + C

  4. ((d))

    Ctrl + C

Show Answer
Answer: ((a))

Ctrl + A

60

The static error band of an instrument implies the

  1. ((a))

    Error introduced in low varying inputs

  2. ((b))

    Difference between the measured value and the true value of the quantity

  3. ((c))

    Irrepeatability of the instrument

  4. ((d))

    Accuracy of the instrument

Show Answer
Answer: ((a))

Error introduced in low varying inputs

61

The instrument usually used as a transfer instrument is ________ type.

  1. ((a))

    Induction

  2. ((b))

    Rectifier

  3. ((c))

    Moving iron

  4. ((d))

    Electrodynamo

Show Answer
Answer: ((a))

Induction

62

When was the Gandhi-Irwin pact carried out?

  1. ((a))

    1941

  2. ((b))

    1930

  3. ((c))

    1940

  4. ((d))

    1931

Show Answer
Answer: ((a))

1941

63

____ is/are the term(s) given to the phenomenon where a change in current through one inductor causes a voltage to be induced in another. 

  1. ((a))

    Mutual conductance

  2. ((b))

    Mutual inductance

  3. ((c))

    Capacitive reactance

  4. ((d))

    Self inductance

Show Answer
Answer: ((a))

Mutual conductance

64

Which type of switch is used in case of stair case wiring? 

  1. ((a))

    Limit switch

  2. ((b))

    Two way switch

  3. ((c))

    Float switch

  4. ((d))

    One way switch

Show Answer
Answer: ((a))

Limit switch

65

Which of the following types of medicine is used for treating indigestion?

  1. ((a))

    Analgesic

  2. ((b))

    Antacid

  3. ((c))

    Antiseptic

  4. ((d))

    Antibiotic

Show Answer
Answer: ((a))

Analgesic

66

Which of the following is not a renewable source of energy?

  1. ((a))

    Nuclear energy

  2. ((b))

    Hydropower

  3. ((c))

    Biomass

  4. ((d))

    Energy from waste

Show Answer
Answer: ((a))

Nuclear energy

67

The ocean covers ________ percentage of Earth’s surface. 

  1. ((a))

    61%

  2. ((b))

    51%

  3. ((c))

    91%

  4. ((d))

    71%

Show Answer
Answer: ((a))

61%

68

The width of the depletion layer of a junction

  1. ((a))

    Is independent of applied voltage

  2. ((b))

    Increases under reverse bias

  3. ((c))

    Decreases with light doping 

  4. ((d))

    Increases with heavy deposit

Show Answer
Answer: ((a))

Is independent of applied voltage

69

The first Chairperson of the National Green Tribunal(NGT) was

  1. ((a))

    Justice Lokeshwar Singh Panta

  2. ((b))

    Justice A.S. Naidu

  3. ((c))

    Justice Markandey Katju

  4. ((d))

    Justice A K Ganguly

Show Answer
Answer: ((a))

Justice Lokeshwar Singh Panta

70

The gas usually filled in the electric bulb is

  1. ((a))

    Carbon dioxide

  2. ((b))

    Oxygen

  3. ((c))

    Hydrogen 

  4. ((d))

    Nitrogen

Show Answer
Answer: ((a))

Carbon dioxide

71

If one mole of carbon atoms weighs 12 gram, what is the mass in gram of 1 atom of carbon?

  1. ((a))

    1 × 10-23 g

  2. ((b))

    3 × 10-23​ g

  3. ((c))

    2 × 10-22 g

  4. ((d))

    1.99 × 10-23​ g

Show Answer
Answer: ((a))

1 × 10-23 g

72

A resonant or tuned circuit combines an inductor and _________ to make a circuit that is responsive to a frequency

  1. ((a))

    Reactor

  2. ((b))

    Capacitor

  3. ((c))

    Inductor

  4. ((d))

    Resistor

Show Answer
Answer: ((a))

Reactor

73

The thickness of armature lamination in a DC machine is about _____. 

  1. ((a))

    1.0 mm - 1.5 mm

  2. ((b))

    0.1 mm - 0.3 mm

  3. ((c))

    0.5 cm - 1 cm

  4. ((d))

    0.4 mm - 0.5 mm

Show Answer
Answer: ((a))

1.0 mm - 1.5 mm

74

______ is where the protection is provided by single or basic insulation, but has the same protective properties as double insulation.

  1. ((a))

    Reinforced insulation

  2. ((b))

    Concrete block insulation

  3. ((c))

    Loose-fill insulation

  4. ((d))

    Blown-in insulation

Show Answer
Answer: ((a))

Reinforced insulation

75

In source data entry devices, what is full form of OMR?

  1. ((a))

    Open Mark Recognition 

  2. ((b))

    Open Message Recognition

  3. ((c))

    Optical Mark Recognition

  4. ((d))

    Optical Message Reader

Show Answer
Answer: ((a))

Open Mark Recognition 

76

The purpose of overload protection in a motor circuit is to protect the motor from

  1. ((a))

    Sustained over-currents

  2. ((b))

    Short circuits

  3. ((c))

    Sustained over-voltage

  4. ((d))

    Earth leakage currents

Show Answer
Answer: ((a))

Sustained over-currents

77

In MS-Excel, what is the shortcut key you can press to Select the entire row?

  1. ((a))

    Ctrl + Home

  2. ((b))

    Shift + Space

  3. ((c))

    Ctrl + Space

  4. ((d))

    Ctrl + Shift + Space

Show Answer
Answer: ((a))

Ctrl + Home

78

The binary equivalent of the decimal number 10 is __________.

  1. ((a))

    1010

  2. ((b))

    010

  3. ((c))

    10

  4. ((d))

    0010

Show Answer
Answer: ((a))

1010

79

Minati Mishra is associated with

  1. ((a))

    Bharatanatyam

  2. ((b))

    Manipuri

  3. ((c))

    Kathakali 

  4. ((d))

    Odissi

Show Answer
Answer: ((a))

Bharatanatyam

80

Electric flux has SI units of

  1. ((a))

    Volt-meter

  2. ((b))

    Coulomb-meter

  3. ((c))

    Tesla

  4. ((d))

    Weber

Show Answer
Answer: ((a))

Volt-meter

81

The dodo was extinct due to

  1. ((a))

    Global environmental change

  2. ((b))

    Invasion of non-native species

  3. ((c))

    Over-exploitation of resources

  4. ((d))

    Pollution

Show Answer
Answer: ((a))

Global environmental change

82

Oscillators which produce non-sinusoidal waveforms are known as

  1. ((a))

    Harmonic oscillators

  2. ((b))

    Steady state oscillators

  3. ((c))

    Damped oscillators

  4. ((d))

    Relaxation oscillators

Show Answer
Answer: ((a))

Harmonic oscillators

83

The technique of adding a precise amount of time between the trigger point and the beginning of the scope sweep in a CRO is known as _______. 

  1. ((a))

    Free running sweep 

  2. ((b))

    Triggered sweep

  3. ((c))

    Non-sawtooth sweep

  4. ((d))

    Delayed sweep

Show Answer
Answer: ((a))

Free running sweep 

84

The temperature at which the vibrations of the molecular magnets become so random and out of alignment as to reduce the magnetic strength to zero is called

  1. ((a))

    Magnetic point

  2. ((b))

    Curie point

  3. ((c))

    Standard point

  4. ((d))

    Axial point

Show Answer
Answer: ((a))

Magnetic point

85

A vacuum cleaner employs _____ motor. 

  1. ((a))

    Shaded pole

  2. ((b))

    Capacitor start

  3. ((c))

    Single phase series

  4. ((d))

    Resistance split phase

Show Answer
Answer: ((a))

Shaded pole

86

The switched relucatance motor is a _______ motor. 

  1. ((a))

    Doubly-excited

  2. ((b))

    Triply-excited

  3. ((c))

    Singly-excited

  4. ((d))

    Multiply-excited

Show Answer
Answer: ((a))

Doubly-excited

87

When a peripheral device needs immediate attention from the operating system, it generates a(n):

  1. ((a))

    Page File

  2. ((b))

    Stack

  3. ((c))

    Interrupt

  4. ((d))

    Spool

Show Answer
Answer: ((a))

Page File

88

To induce maximum EMF in a conductor, the direction of motion of the conductor must be _______.

  1. ((a))

    In line with the magnetic lines of flux

  2. ((b))

    Perpendicular to the magnetic lines of flux

  3. ((c))

    Tangential to the magnetic lines of flux

  4. ((d))

    Parallel to the magnetic lines of flux

Show Answer
Answer: ((a))

In line with the magnetic lines of flux

89

Which of the following occurs in PN junction diodes when the electric field in the depletion layer increases to the point where it can break covalent bonds and generate electron hole pairs? 

  1. ((a))

    Covalent breakdown

  2. ((b))

    Avalanche breakdown

  3. ((c))

    Zener breakdown 

  4. ((d))

    Diffusion

Show Answer
Answer: ((a))

Covalent breakdown

90

Which of the following animals was under category of “critically endangered species” till 2008, later upgraded to "endangered species"?

  1. ((a))

    Sumatran Rhinoceros

  2. ((b))

    Asiatic Lion

  3. ((c))

    Panda

  4. ((d))

    Indian Tiger

Show Answer
Answer: ((a))

Sumatran Rhinoceros

91

The fixed coil in a dynamometer wattmeter is the

  1. ((a))

    Pressure coil

  2. ((b))

    Current coil 

  3. ((c))

    Dynamic coil

  4. ((d))

    Power coil

Show Answer
Answer: ((a))

Pressure coil

92

Which of the following is an example of chlorinated hydrocarbon insecticide?

  1. ((a))

    Allethrin

  2. ((b))

    Fenthion

  3. ((c))

    Toxaphene

  4. ((d))

    Oxamyl

Show Answer
Answer: ((a))

Allethrin

93

Kirchhoff's Current Law (KCL) is the first law that deals with the conservation of

  1. ((a))

    Charge

  2. ((b))

    Linear momentum

  3. ((c))

    Momentum

  4. ((d))

    Mass

Show Answer
Answer: ((a))

Charge

94

SMPS is used for

  1. ((a))

    Switch from one source to another

  2. ((b))

    Storage of DC power

  3. ((c))

    Obtaining controlled AC power supply

  4. ((d))

    Obtaining controlled DC power supply

Show Answer
Answer: ((a))

Switch from one source to another

95

A supply voltage of 230 V, 50 Hz is fed to a residential building. What is the equation for instantaneous value? 

  1. ((a))

    v=361.27 sin 314.16 t

  2. ((b))

    v=325.27 sin 314.16 t

  3. ((c))

    v=230.27 sin 315.16 t

  4. ((d))

    v=163.27 sin 314.16 t

Show Answer
Answer: ((a))

v=361.27 sin 314.16 t

96

The current drawn by a tungsten filament lamp is measured by an ammeter. The ammeter reading under steady state condition will be ______ the ammeter reading when the supply is switched on.

  1. ((a))

    Greater than

  2. ((b))

    Double

  3. ((c))

    Same as

  4. ((d))

    Less than

Show Answer
Answer: ((a))

Greater than

97

An email address consists of _____ parts. 

  1. ((a))

    3

  2. ((b))

    4

  3. ((c))

    2

  4. ((d))

    5

Show Answer
Answer: ((a))

3

98

Components which obey Ohm’s law are known as

  1. ((a))

    Capacitors 

  2. ((b))

    Non-ohmic components 

  3. ((c))

    Resistors

  4. ((d))

    Ohmic components

Show Answer
Answer: ((a))

Capacitors 

99

What is the primary function of the starter in a motor?

  1. ((a))

    To start the counting of time of motor running

  2. ((b))

    To develop high starting torque

  3. ((c))

    To limit the starting current

  4. ((d))

    To bring motor quickly to full speed

Show Answer
Answer: ((a))

To start the counting of time of motor running

100

Which industry flourishes in Nepanagar? 

  1. ((a))

    Cement Industry 

  2. ((b))

    Sugar Industry

  3. ((c))

    Chemical Industry 

  4. ((d))

    Paper Industry

Show Answer
Answer: ((a))

Cement Industry 

101

A final safeguard against electrical shock can be arranged on the power supply side of the circuit rather than the appliance itself. This safeguard is called

  1. ((a))

    Ground fault detection

  2. ((b))

    External fault detection

  3. ((c))

    Internal fault detection

  4. ((d))

    Phase fault detection

Show Answer
Answer: ((a))

Ground fault detection

102

Which of the following relays are operating when the vector difference of two electrical quantities exceeds a pre-determined value?

  1. ((a))

    Sequential relay

  2. ((b))

    Frequency relay

  3. ((c))

    Differential relay

  4. ((d))

    Both frequency and sequential relay

Show Answer
Answer: ((a))

Sequential relay

103

Which of the following are the advantages of distributed armature winding?

  1. ((a))

    Suitable for low current density

  2. ((b))

    Low heat dissipation

  3. ((c))

    Low voltage waveform

  4. ((d))

    Elimination of distorting harmonics

Show Answer
Answer: ((a))

Suitable for low current density

104

Which insulation is most widely used for covering wires/cables used in internal wiring of residential construction?

  1. ((a))

    Wood

  2. ((b))

    Paper

  3. ((c))

    PVC

  4. ((d))

    Glass

Show Answer
Answer: ((a))

Wood

105

________ lamps consist of an inner discharge tube and an outer evacuated tube.

  1. ((a))

    Both sodium and fluorescent lamps

  2. ((b))

    High pressure mercury vapour lamp

  3. ((c))

    Fluorescent lamp 

  4. ((d))

    Sodium lamp

Show Answer
Answer: ((a))

Both sodium and fluorescent lamps

106

A mercury vapor lamp gives ______ light.

  1. ((a))

    White

  2. ((b))

    Pink

  3. ((c))

    Yellow

  4. ((d))

    Greenish blue

Show Answer
Answer: ((a))

White

107

The ratio of change in output towards the change in input at a steady state condition for a given measuring system is referred to as

  1. ((a))

    Linearity

  2. ((b))

    Threshold

  3. ((c))

    Sensitivity

  4. ((d))

    Stability 

Show Answer
Answer: ((a))

Linearity

108

Thermal overload relay is provided in a starter to protect the motor against

  1. ((a))

    Short circuit

  2. ((b))

    Excess current

  3. ((c))

    Low voltage

  4. ((d))

    Open circuit

Show Answer
Answer: ((a))

Short circuit

109

______ is defined as the ratio of the actual voltage obtained to the possible voltage, if all the coils of a polar group were concentrated in a single slot.

  1. ((a))

    Pitch factor

  2. ((b))

    Distribution factor

  3. ((c))

    Breadth factor

  4. ((d))

    Both distribution and breadth factor

Show Answer
Answer: ((a))

Pitch factor

110

The dissipation factor of a capacitor can be measured by using

  1. ((a))

    Potentiometer

  2. ((b))

    Schering bridge

  3. ((c))

    Galvanometer 

  4. ((d))

    Campbell bridge

Show Answer
Answer: ((a))

Potentiometer

111

Which is NOT an operating mode of SCR?

  1. ((a))

    Reverse blocking mode 

  2. ((b))

    Forward blocking mode

  3. ((c))

    Forward conducting mode

  4. ((d))

    Reverse conducting mode

Show Answer
Answer: ((a))

Reverse blocking mode 

112

For household wiring and small units, which of the following should be used for safety measure?

  1. ((a))

    OCB

  2. ((b))

    ACB

  3. ((c))

    VCB

  4. ((d))

    MCB

Show Answer
Answer: ((a))

OCB

113

Superposition theorem is only applicable for determining ____ only.

  1. ((a))

    Power

  2. ((b))

    Voltage

  3. ((c))

    Voltage and current

  4. ((d))

    Current

Show Answer
Answer: ((a))

Power

114

________ is a property of ferromagnetic materials that causes them to change their shape or dimensions during the process of magnetization.

  1. ((a))

    Magnetostriction

  2. ((b))

    Magnetic anisotropy

  3. ((c))

    Anisotropy

  4. ((d))

    Magnetization 

Show Answer
Answer: ((a))

Magnetostriction

115

The commutator of a DC generator acts as _______.

  1. ((a))

    An amplifier

  2. ((b))

    A rectifier

  3. ((c))

    A load

  4. ((d))

    A multiplier 

Show Answer
Answer: ((a))

An amplifier

116

Which of the following is the main advantage of transmitting power over transmission lines on high voltage?

  1. ((a))

    Efficiency of transmission line is increased

  2. ((b))

    Increase in conductor cost 

  3. ((c))

    Voltage drop in line is increased

  4. ((d))

    Voltage loss in line is increased

Show Answer
Answer: ((a))

Efficiency of transmission line is increased

117

Which of the following are the advantages of mercury vapour lamp?

  1. ((a))

    It produces light similar to day light which may help in increasing the production

  2. ((b))

    It take about 6 minutes to give full brightness 

  3. ((c))

    It cannot be used in any standard lamp holder as there are three pins in the cap

  4. ((d))

    The original colour of an object cannot be judged

Show Answer
Answer: ((a))

It produces light similar to day light which may help in increasing the production

118

Which of the following is NOT a world heritage site?

  1. ((a))

    Manas Wildlife Sanctuary

  2. ((b))

    Kaziranga National Park

  3. ((c))

    Nanda Devi National Park

  4. ((d))

    Periyar National Park 

Show Answer
Answer: ((a))

Manas Wildlife Sanctuary

119

When did India first take part in the Olympic Games?

  1. ((a))

    1974

  2. ((b))

    1972

  3. ((c))

    1920 

  4. ((d))

    1928

Show Answer
Answer: ((a))

1974

120

Which of the following statements are true with Faraday’s laws of electromagnetic induction?

  1. ((a))

    The EMF induced in a coil due to change of flux linked with it is called MMF

  2. ((b))

    The EMF induced in a coil due to change of flux linked with it is called leakage flux

  3. ((c))

    The EMF induced in a coil due to change of flux linked with it is called dynamic induced EMF

  4. ((d))

    The conductor is stationary and the magnetic field is moving or changing then the EMF will be induced and it is called static induced EMF

Show Answer
Answer: ((a))

The EMF induced in a coil due to change of flux linked with it is called MMF

121

Dielectric loss is proportional to _____.

  1. ((a))

    [Frequency]1/2

  2. ((b))

    Frequency2

  3. ((c))

    Frequency3

  4. ((d))

    Frequency

Show Answer
Answer: ((a))

[Frequency]1/2

122

Which of the following is an example of popular antivirus? 

  1. ((a))

    Encrypted virus

  2. ((b))

    Sasser

  3. ((c))

    Worms

  4. ((d))

    Bitdefender

Show Answer
Answer: ((a))

Encrypted virus

123

“Ozone Hole” is a -

  1. ((a))

    Hole in the atmosphere

  2. ((b))

    Hole in the troposphere

  3. ((c))

    Hole in the thermosphere

  4. ((d))

    Destruction of ozone layer

Show Answer
Answer: ((a))

Hole in the atmosphere

124

In which of the following transformers, is the secondary winding always kept closed?

  1. ((a))

    Distribution transformer 

  2. ((b))

    Power transformer 

  3. ((c))

    Current transformer

  4. ((d))

    Potential transformer 

Show Answer
Answer: ((a))

Distribution transformer 

125

In Gmail, the email address of the recipients can be entered in __________ field.

  1. ((a))

    Subject

  2. ((b))

    To

  3. ((c))

    Message

  4. ((d))

    From

Show Answer
Answer: ((a))

Subject

126

Silver article become black on prolonged exposure to air. This is due to formation of

  1. ((a))

    Ag3N

  2. ((b))

    Ag2S

  3. ((c))

    Ag2O

  4. ((d))

    Ag2SO3

Show Answer
Answer: ((a))

Ag3N

127

The important pass that links Kerala with Tamil Nadu is

  1. ((a))

    Aramboli 

  2. ((b))

    Palghat

  3. ((c))

    Bhor Ghat

  4. ((d))

    Thalghat

Show Answer
Answer: ((a))

Aramboli 

128

Which of the following is NOT the property of a parallel resonant RLC circuit?

  1. ((a))

    Current is minimum

  2. ((b))

    Admittance of the circuit at resonance is minimum

  3. ((c))

    Power factor is zero 

  4. ((d))

    Impedance of the circuit at resonance is maximum

Show Answer
Answer: ((a))

Current is minimum

129

The output is high if either of the input is high. The above statement repesents _____

  1. ((a))

    NAND gate

  2. ((b))

    OR gate

  3. ((c))

    AND gate

  4. ((d))

    EX-OR gate

Show Answer
Answer: ((a))

NAND gate

130

The term PAN in chemical refers to

  1. ((a))

    Peroxyacyl nitrate 

  2. ((b))

    Peroxyacyl nitrogen

  3. ((c))

    Peroxyacyl nitrolic 

  4. ((d))

    Peroxyacyl nitrite

Show Answer
Answer: ((a))

Peroxyacyl nitrate 

131

Identify the non-renewable source of energy from the following. 

  1. ((a))

    Fuel cells

  2. ((b))

    Wind power

  3. ((c))

    Coal

  4. ((d))

    Wave power

Show Answer
Answer: ((a))

Fuel cells

132

The main idea of running earth wire along the conduit run is to _______.

  1. ((a))

    Make wiring strong 

  2. ((b))

    Save the earth wire against mechanical damage

  3. ((c))

    Make the conduit and metal accessories electrically continuous

  4. ((d))

    Make the conduit mechanically strong

Show Answer
Answer: ((a))

Make wiring strong 

133

Thermocouple is a device which converts

  1. ((a))

    Mechanical energy to heat energy

  2. ((b))

    Kinetic energy to heat energy

  3. ((c))

    Heat energy to electric energy 

  4. ((d))

    Electric energy to heat energy

Show Answer
Answer: ((a))

Mechanical energy to heat energy

134

Which of the following instruments can be used both for AC and DC?

  1. ((a))

    Induction type

  2. ((b))

    Analog type

  3. ((c))

    Moving-iron type

  4. ((d))

    PMMC type

Show Answer
Answer: ((a))

Induction type

135

Which of the following rule number states that "every installation shall be periodically inspected and checked at intervals not exceeding five years either by inspector or by the supplier"?

  1. ((a))

    IEE rule no. 29

  2. ((b))

    IEE rule no. 87 

  3. ((c))

    IEE rule no. 80

  4. ((d))

    IEE rule no. 46 

Show Answer
Answer: ((a))

IEE rule no. 29

136

The B-H curve for ______ will be a straight line passing through the origin. 

  1. ((a))

    Hardened steel

  2. ((b))

    Silicon steel

  3. ((c))

    Air

  4. ((d))

    Soft iron

Show Answer
Answer: ((a))

Hardened steel

137

Which of the following are mechanical devices designed to close or open contact members, thus closing or opening an electrical circuit under normal or abnormal conditions?

  1. ((a))

    Fuses

  2. ((b))

    Isolators

  3. ((c))

    Lightning arresters

  4. ((d))

    Circuit breakers

Show Answer
Answer: ((a))

Fuses

138

If the connection of a field winding of a DC shunt motor is changed, then the motor

  1. ((a))

    Speed of the motor will reduce

  2. ((b))

    Will not run

  3. ((c))

    Will run in the same direction

  4. ((d))

    Will run in the opposite direction 

Show Answer
Answer: ((a))

Speed of the motor will reduce

139

MOSFET can be used as a

  1. ((a))

    Voltage controlled inductor

  2. ((b))

    Current controlled inductor

  3. ((c))

    Voltage controlled capacitor

  4. ((d))

    Current controlled capacitor

Show Answer
Answer: ((a))

Voltage controlled inductor

140

An under excited synchronous motor operates at ________ power factor.

  1. ((a))

    Unity

  2. ((b))

    Zero

  3. ((c))

    Leading

  4. ((d))

    Lagging

Show Answer
Answer: ((a))

Unity

141

If the excitation of an alternator operating in parallel with another alternator is increased above the normal value of excitation, its ________.

  1. ((a))

    Output current decreases 

  2. ((b))

    Power factor becomes more leading

  3. ((c))

    Output kW decreases

  4. ((d))

    Power factor becomes more lagging

Show Answer
Answer: ((a))

Output current decreases 

142

The leakage resistance of a 50 km long cable is 1 MΩ. For a 100 km long cable, it will be _____.

  1. ((a))

    0.5 MΩ

  2. ((b))

    2 MΩ

  3. ((c))

    1.6 MΩ

  4. ((d))

    2.5 MΩ

Show Answer
Answer: ((a))

0.5 MΩ

143

The steam turbine is coupled to an alternator. The alternator converts

  1. ((a))

    Mechanical energy to electrical energy

  2. ((b))

    AC to DC

  3. ((c))

    Electrical energy to mechanical energy

  4. ((d))

    DC to AC

Show Answer
Answer: ((a))

Mechanical energy to electrical energy

144

The cores of electromagnets used in energy meter are made up of

  1. ((a))

    Silver

  2. ((b))

    Carbon

  3. ((c))

    Silicon-steel 

  4. ((d))

    Phosphor bronze

Show Answer
Answer: ((a))

Silver

145

Synchronous condenser is used to produce _______ without producing real power. 

  1. ((a))

    Active power

  2. ((b))

    Active and apparent power 

  3. ((c))

    Reactive power

  4. ((d))

    Apparent power

Show Answer
Answer: ((a))

Active power

146

The 3 R principle in waste management involves

  1. ((a))

    Reduce, Reform, Reset 

  2. ((b))

    Reduce, Regain, Reuse

  3. ((c))

    Reduce, Retain, Regain

  4. ((d))

    Reduce, Reuse, Recycle

Show Answer
Answer: ((a))

Reduce, Reform, Reset 

147

Rutherford's alpha particle scattering experiment was responsible for the discovery of

  1. ((a))

    Electron

  2. ((b))

    Neutron

  3. ((c))

    Proton

  4. ((d))

    Atomic nucleus

Show Answer
Answer: ((a))

Electron

148

The maximum demand of a consumer is 2 kW and his daily energy consumption is 24 units. His load factor is ______.

  1. ((a))

    40%

  2. ((b))

    50%

  3. ((c))

    20%

  4. ((d))

    80%

Show Answer
Answer: ((a))

40%

149

______ power is the vector sum of resistive and reactive power and is measured in volt-amps.

  1. ((a))

    Real power

  2. ((b))

    True power

  3. ((c))

    Apparent power

  4. ((d))

    Resistive power

Show Answer
Answer: ((a))

Real power

150

Cylindrical pole type rotors are generally used with prime movers of

  1. ((a))

    High speed

  2. ((b))

    Medium speed

  3. ((c))

    Low speed

  4. ((d))

    Double the current

Show Answer
Answer: ((a))

High speed

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