Official Paper

RRB JE Electronics 01 Sep 2019 (Shift 2) Official Paper (Previous Year Paper)

150 questions · 120 minutes · with answers · free

Attempt as Timed Mock Test

Test (150 questions)

1

What is the difference between a 7400 and a 7411 IC?

  1. ((a))

    7400 has four two-input NAND gates; 7411 has three three-input AND gates 

  2. ((b))

    7400 has four two-input AND gates; 7411 has three three-input NAND gates

  3. ((c))

    7400 has two four-input NAND gates; 7411 has three three-input AND gates

  4. ((d))

    7400 has two four-input AND gates; 7411 has three three-input NAND gates

Show Answer
Answer: ((a))

7400 has four two-input NAND gates; 7411 has three three-input AND gates 

2

Noise factor of a system is defined as:

  1. ((a))

    Ratio of input signal to output signal

  2. ((b))

    Ratio of input S/N ratio to output S/N ratio 

  3. ((c))

    Ratio of output S/N ratio to input S/N ratio

  4. ((d))

    Ratio of output signal to noise ratio

Show Answer
Answer: ((a))

Ratio of input signal to output signal

3

In Smart India Hackathon 2019, students of __________ came out with a Solution to Detect Fake Notes.

  1. ((a))

    IIT - Kharagpur

  2. ((b))

    IIT - Chennai 

  3. ((c))

    IIT - Delhi

  4. ((d))

    IIT - Mumbai 

Show Answer
Answer: ((a))

IIT - Kharagpur

4

The number of distinct Boolean expressions of four variables is-

  1. ((a))

    16

  2. ((b))

    1024

  3. ((c))

    256

  4. ((d))

    65536

Show Answer
Answer: ((a))

16

5

Tundra ecosystem is an example of-

  1. ((a))

    Micro biological 

  2. ((b))

    All of the options

  3. ((c))

    Marine

  4. ((d))

    No tree region

Show Answer
Answer: ((a))

Micro biological 

6

The name of group 17 elements is-

  1. ((a))

    Halogens

  2. ((b))

    Chalcogens

  3. ((c))

    Noble gases

  4. ((d))

    Metal

Show Answer
Answer: ((a))

Halogens

7

The process of producing chemical decomposition of a compound by passing electricity through the compound is called-

  1. ((a))

    Electrolysis

  2. ((b))

    Electrolyte

  3. ((c))

    Electroplating

  4. ((d))

    Electrophoresis

Show Answer
Answer: ((a))

Electrolysis

8

Bengal famine occurred in the year _________.

  1. ((a))

    1942

  2. ((b))

    1940

  3. ((c))

    1943

  4. ((d))

    1939

Show Answer
Answer: ((a))

1942

9

Which of the following types is best suited to represent the logical values? 

  1. ((a))

    Double

  2. ((b))

    Character

  3. ((c))

    Integer

  4. ((d))

    Boolean

Show Answer
Answer: ((a))

Double

10

Which of the following initialization statement store six integer values in array?

  1. ((a))

    int array; 

  2. ((b))

    int array[5]; 

  3. ((c))

    int array(6);

  4. ((d))

    int array[6];

Show Answer
Answer: ((a))

int array; 

11

The primary colour used in colour television is-

  1. ((a))

    Red, green, blue

  2. ((b))

    Blue, yellow, green

  3. ((c))

    Green, yellow, red

  4. ((d))

    Red, yellow, blue 

Show Answer
Answer: ((a))

Red, green, blue

12

A computer modem's rating of 56 K refers to its-

  1. ((a))

    Modem size

  2. ((b))

    Memory size

  3. ((c))

    Transmission capacity

  4. ((d))

    Transmission speed

Show Answer
Answer: ((a))

Modem size

13

What is the characteristic of a master-slave flip-flop?

  1. ((a))

    Change in the output occurs when the state of the master is affected

  2. ((b))

    Both the master and the slave states are affected at the same time 

  3. ((c))

    Change in the output occurs when the state of the slave is affected

  4. ((d))

    Change in the input immediately reflected in the output

Show Answer
Answer: ((a))

Change in the output occurs when the state of the master is affected

14

Who among the following was the tenth Sikh Guru?

  1. ((a))

    Guru Nanak 

  2. ((b))

    Guru Arjan Dev

  3. ((c))

    Guru Ram Das 

  4. ((d))

    Guru Gobind Singh

Show Answer
Answer: ((a))

Guru Nanak 

15

Which is NOT a control instruction? 

  1. ((a))

    CMP

  2. ((b))

    HLT

  3. ((c))

    SIM

  4. ((d))

    RIM

Show Answer
Answer: ((a))

CMP

16

Vikramshila Gangetic Dolphin Sanctuary is located in which of the following states of India?

  1. ((a))

    Assam

  2. ((b))

    Bihar

  3. ((c))

    Uttar Pradesh

  4. ((d))

    West Bengal

Show Answer
Answer: ((a))

Assam

17

Air blast circuit breaker is operated at a pressure of-

  1. ((a))

    30 - 50 kg/cm2

  2. ((b))

    20 - 30 kg/cm2

  3. ((c))

    1 - 5 kg/cm2

  4. ((d))

    10 - 20 kg/cm2

Show Answer
Answer: ((a))

30 - 50 kg/cm2

18

Linear meter with a 1% of full scale accuracy should have __________ on the 1 V range . 

  1. ((a))

    100 divisions

  2. ((b))

    500 divisions

  3. ((c))

    50 divisions

  4. ((d))

    200 divisions 

Show Answer
Answer: ((a))

100 divisions

19

A function which calls itself is called a

  1. ((a))

    Recursive Function

  2. ((b))

    Static Function

  3. ((c))

    Auto Function

  4. ((d))

    Self Function

Show Answer
Answer: ((a))

Recursive Function

20

What is the forbidden energy gap in a pure conductor?

  1. ((a))

    1.1 eV

  2. ((b))

    0.7 eV

  3. ((c))

    6 eV 

  4. ((d))

    0 eV

Show Answer
Answer: ((a))

1.1 eV

21

Two ampere hour (Ah) is equal to how many Coulombs?

  1. ((a))

    2400 C

  2. ((b))

    7200 C

  3. ((c))

    8400 C

  4. ((d))

    2 C

Show Answer
Answer: ((a))

2400 C

22

The amplifier which retains the shape of the input signal at the output are called-

  1. ((a))

    Pulse transformer 

  2. ((b))

    Non-linear amplifier

  3. ((c))

    Distortion amplifier 

  4. ((d))

    Linear amplifier 

Show Answer
Answer: ((a))

Pulse transformer 

23

Which of the following oscillators uses a capacitive voltage divider to provide feedback? 

  1. ((a))

    Hartley

  2. ((b))

    RC phase shift

  3. ((c))

    Colpitts

  4. ((d))

    Multivibrator

Show Answer
Answer: ((a))

Hartley

24

If a capacitor stores 0.12 C at 10 V, then its capacitance is-

  1. ((a))

    0.24 F

  2. ((b))

    0.012 F 

  3. ((c))

    0.024 F

  4. ((d))

    0.6 F

Show Answer
Answer: ((a))

0.24 F

25

What is the phase difference between output and input voltage of a CE amplifier?

  1. ((a))

    180°

  2. ((b))

    90°

  3. ((c))

    270° 

  4. ((d))

    0°

Show Answer
Answer: ((a))

180°

26

MAC address is written in which format?

  1. ((a))

    Hexa decimal format

  2. ((b))

    Decimal format

  3. ((c))

    Binary format

  4. ((d))

    Octal format 

Show Answer
Answer: ((a))

Hexa decimal format

27

If the pH of solution is 13, this means that it is-

  1. ((a))

    Strongly acidic

  2. ((b))

    Weakly acidic

  3. ((c))

    Weakly basic

  4. ((d))

    Strongly basic

Show Answer
Answer: ((a))

Strongly acidic

28

Which of these is NOT an ideal way of spreading viruses?

  1. ((a))

    Official Antivirus CDs 

  2. ((b))

    Infected website

  3. ((c))

    Emails

  4. ((d))

    USBs

Show Answer
Answer: ((a))

Official Antivirus CDs 

29

The property of material by which it can be rolled into sheets is called-

  1. ((a))

    Plasticity

  2. ((b))

    Elasticity

  3. ((c))

    Malleability

  4. ((d))

    Ductility

Show Answer
Answer: ((a))

Plasticity

30

Which of the following is NOT a solution for global warming?

  1. ((a))

    Using compact fluorescent light (CFL) bulbs

  2. ((b))

    Planting more trees

  3. ((c))

    Reducing fossil fuel consumption

  4. ((d))

    Deforestation

Show Answer
Answer: ((a))

Using compact fluorescent light (CFL) bulbs

31

Tropical Forest Research Institute is located in the state of-

  1. ((a))

    Andhra Pradesh

  2. ((b))

    Madhya Pradesh

  3. ((c))

    Tamil Nadu

  4. ((d))

    Kerala

Show Answer
Answer: ((a))

Andhra Pradesh

32

What type of nuclear reaction is responsible for liberation of energy in the nuclear reactor?

  1. ((a))

    Nuclear fission

  2. ((b))

    Nuclear fusion

  3. ((c))

    Nuclear destruction

  4. ((d))

    Nuclear generation

Show Answer
Answer: ((a))

Nuclear fission

33

In order for an output to swing above and below a zero reference, the op-amp circuit requires-

  1. ((a))

    Zero offset

  2. ((b))

    A resistive feedback network

  3. ((c))

    A wide bandwidth 

  4. ((d))

    A negative and positive supply

Show Answer
Answer: ((a))

Zero offset

34

Which of the following elements is having one electron in the outermost orbit?

  1. ((a))

    Carbon

  2. ((b))

    Oxygen

  3. ((c))

    Calcium

  4. ((d))

    Lithium

Show Answer
Answer: ((a))

Carbon

35

An electronic component consisting of two conductor plates separated by empty space and capable of storing a certain amount of charge is known as-

  1. ((a))

    Transistor

  2. ((b))

    Resistor

  3. ((c))

    Inductor

  4. ((d))

    Capacitor

Show Answer
Answer: ((a))

Transistor

36

In a CRO which of the following is/are part of electron gun?

  1. ((a))

    Cathode

  2. ((b))

    Grid

  3. ((c))

    All of the options

  4. ((d))

    Accelerating anode

Show Answer
Answer: ((a))

Cathode

37

Which of the following function sets first n characters of a string to a given character?

  1. ((a))

    strinit () 

  2. ((b))

    strcset () 

  3. ((c))

    strnset () 

  4. ((d))

    strset () 

Show Answer
Answer: ((a))

strinit () 

38

Hall effect device can be used to-

  1. ((a))

    Divide one signal by another on an instantaneous basis 

  2. ((b))

    Add two signals

  3. ((c))

    Multiply two signals 

  4. ((d))

    Subtract one signal from another

Show Answer
Answer: ((a))

Divide one signal by another on an instantaneous basis 

39

For a certain load, the true power is 100 W and the reactive power is 100 VAR. What is the apparent power?

  1. ((a))

    100 VA 

  2. ((b))

    120 VA

  3. ((c))

    141.4 VA 

  4. ((d))

    200 VA

Show Answer
Answer: ((a))

100 VA 

40

PAM signals can be demodulated by using a-

  1. ((a))

    Bandpass filter

  2. ((b))

    High pass filter

  3. ((c))

    Low pass filter

  4. ((d))

    Bandreject filter 

Show Answer
Answer: ((a))

Bandpass filter

41

In electron tube, vacuum diode is made to work in-

  1. ((a))

    Space charge limited current region

  2. ((b))

    Saturation region

  3. ((c))

    Temperature limited region

  4. ((d))

    Cut-off region

Show Answer
Answer: ((a))

Space charge limited current region

42

A circuit whose output is proportional to the difference between the input signals is considered to be which type of amplifier?

  1. ((a))

    Differential

  2. ((b))

    Darlington

  3. ((c))

    Operational

  4. ((d))

    Common-mode

Show Answer
Answer: ((a))

Differential

43

FET is a device which has:

  1. ((a))

    High input impedance and is voltage controlled

  2. ((b))

    Low input impedance and is current controlled

  3. ((c))

    Low input impedance and is voltage controlled

  4. ((d))

    High input impedance and is current controlled

Show Answer
Answer: ((a))

High input impedance and is voltage controlled

44

When does the circuit breaker automatically operate in the line? 

  1. ((a))

    Whenever the switch and the relay has to be operated

  2. ((b))

    When the line is to be tested

  3. ((c))

    Whenever the fault occurs in the line

  4. ((d))

    When power is to be supplied

Show Answer
Answer: ((a))

Whenever the switch and the relay has to be operated

45

Which of the following technique(s) used in networking?

  1. ((a))

    Packet switching 

  2. ((b))

    Circuit switching

  3. ((c))

    Message switching

  4. ((d))

    All of the options

Show Answer
Answer: ((a))

Packet switching 

46

The number of valence electrons of the element silicon with atomic number 14 is-

  1. ((a))

    5

  2. ((b))

    4

  3. ((c))

    3

  4. ((d))

    8

Show Answer
Answer: ((a))

5

47

Register which is used to store values of arithmetic and logical operations is termed: 

  1. ((a))

    Controller

  2. ((b))

    Arithmetic register

  3. ((c))

    Accumulator

  4. ((d))

    Logical register

Show Answer
Answer: ((a))

Controller

48

Calculate the formula unit mass of CaCl2.

  1. ((a))

    112 U

  2. ((b))

    111 U 

  3. ((c))

    110 U

  4. ((d))

    100 U

Show Answer
Answer: ((a))

112 U

49

Which of the following statement provides an easy way to dispatch execution to different parts of code based on the value of the expression? 

  1. ((a))

    Switch

  2. ((b))

    While

  3. ((c))

    If

  4. ((d))

    If-else

Show Answer
Answer: ((a))

Switch

50

Which of the following is NOT a type of network?

  1. ((a))

    Store Private Network

  2. ((b))

    Enterprise Private Network

  3. ((c))

    Virtual Private Network

  4. ((d))

    Personal Area Network 

Show Answer
Answer: ((a))

Store Private Network

51

Aluminium ore is known as-

  1. ((a))

    Bauxite

  2. ((b))

    Galena

  3. ((c))

    Haematite

  4. ((d))

    Alum

Show Answer
Answer: ((a))

Bauxite

52

Which of the given units are NOT derived Units?

  1. ((a))

    Newton

  2. ((b))

    Kilogram

  3. ((c))

    Watt

  4. ((d))

    Pascal

Show Answer
Answer: ((a))

Newton

53

Which of the following is a solderless device for temporary prototype with electronics and test circuit designs?

  1. ((a))

    Bread board 

  2. ((b))

    Printed circuit board 

  3. ((c))

    Eyelet board

  4. ((d))

    Lug board

Show Answer
Answer: ((a))

Bread board 

54

__________ states that the total outward electrical displacement through any closed surface surrounding charges is equal to the total charge enclosed. 

  1. ((a))

    Kirchoffs current law

  2. ((b))

    Ampere law

  3. ((c))

    Kirchoffs voltage law

  4. ((d))

    Gauss law

Show Answer
Answer: ((a))

Kirchoffs current law

55

Which of these software applications was NOT part of the first version of Microsoft Office?

  1. ((a))

    MS-PowerPoint

  2. ((b))

    MS-Word

  3. ((c))

    MS-Excel

  4. ((d))

    Outlook

Show Answer
Answer: ((a))

MS-PowerPoint

56

Which is not considered as a linear voltage regulator?

  1. ((a))

    Series Voltage Regulator

  2. ((b))

    Shunt Voltage Regulator

  3. ((c))

    Adjustable Voltage Regulator

  4. ((d))

    Switching regulator

Show Answer
Answer: ((a))

Series Voltage Regulator

57

Transistors used as power amplifiers are generally mounted on a metallic plate so as to-

  1. ((a))

    Improve their conductivity

  2. ((b))

    Provide the additional support to them

  3. ((c))

    Radiate the excessive heat developed in them during working

  4. ((d))

    Improve their performance

Show Answer
Answer: ((a))

Improve their conductivity

58

ISP exchanges internet traffic between their networks by-

  1. ((a))

    Web service endpoint

  2. ((b))

    ISP end point

  3. ((c))

    Internet exchange point 

  4. ((d))

    Subscriber end point

Show Answer
Answer: ((a))

Web service endpoint

59

The basic building block of sequential logic circuit is-

  1. ((a))

    OR gate

  2. ((b))

    NAND gate

  3. ((c))

    Flip flop

  4. ((d))

    AND gate

Show Answer
Answer: ((a))

OR gate

60

India Population Project (IPP)-VIII was aimed at-

  1. ((a))

    A series of birth control programmes in the entire India

  2. ((b))

    Improving health and family welfare services in the urban slums in the cities of Delhi, Calcutta, Hyderabad and Bangalore

  3. ((c))

    Improving health and family welfare services in the urban slums in the cities of Delhi, Calcutta, Mumbai and Chennai 

  4. ((d))

    Improving health and family welfare services in Rajasthan, Assam and Karnataka

Show Answer
Answer: ((a))

A series of birth control programmes in the entire India

61

Which of the following is a linear data structure? 

  1. ((a))

    Tree

  2. ((b))

    Graph

  3. ((c))

    Binary tree 

  4. ((d))

    Stacks

Show Answer
Answer: ((a))

Tree

62

On which of the following river banks is the city of Nasik located?

  1. ((a))

    Tapti

  2. ((b))

    Jhelum

  3. ((c))

    Godavari

  4. ((d))

    Cauvery

Show Answer
Answer: ((a))

Tapti

63

The number of comparator circuits required to build a three - bit simultaneous A/D convertor is:

  1. ((a))

    15

  2. ((b))

    7

  3. ((c))

    8

  4. ((d))

    16

Show Answer
Answer: ((a))

15

64

The amount of heat energy that is required to change 1 kg of a solid into liquid at atmospheric pressure at its melting point is known as-

  1. ((a))

    Latent heat of condensation

  2. ((b))

    Latent heat of neutralisation

  3. ((c))

    Latent heat of fusion

  4. ((d))

    Latent heat of vapourisation

Show Answer
Answer: ((a))

Latent heat of condensation

65

Which of the following type of network is used to cover small geographical area?

  1. ((a))

    LAN

  2. ((b))

    MAN

  3. ((c))

    VAN

  4. ((d))

    WAN

Show Answer
Answer: ((a))

LAN

66

Which of the following is the most common device that accepts letters, numbers and command from a user?

  1. ((a))

    USB

  2. ((b))

    Optical Mouse 

  3. ((c))

    Sensitive Screen or touch screen

  4. ((d))

    Keyboard

Show Answer
Answer: ((a))

USB

67

Which of the following is the main application of Zener diode?

  1. ((a))

    Amplifier

  2. ((b))

    Multivibrator

  3. ((c))

    Voltage regulator

  4. ((d))

    Rectifier

Show Answer
Answer: ((a))

Amplifier

68

A comparison of frequency division and time division multiplexing systems shows that-

  1. ((a))

    FDM has greater noise immunity and requires lower bandwidth than TDM

  2. ((b))

    FDM efficiency is more compared to TDM 

  3. ((c))

    FDM cost is low than TDM

  4. ((d))

    FDM does not require synchronization, while TDM has greater noise immunity

Show Answer
Answer: ((a))

FDM has greater noise immunity and requires lower bandwidth than TDM

69

The circular rings of copper on the PCB for making solder connections of component leads are called-

  1. ((a))

    Cutout

  2. ((b))

    Patches

  3. ((c))

    Blind Via

  4. ((d))

    Pads

Show Answer
Answer: ((a))

Cutout

70

Which of the following statement is FALSE?

  1. In a concave mirror, the centre of curvature is in front of the mirror.
  2. Convex mirror is bulged outside.
  3. In a convex mirror, the centre of curvature is in front of the mirror.
  4. Concave mirror is bulged outside.
  1. ((a))

    Statements (1) and (3) 

  2. ((b))

    Statements (3) and (4)

  3. ((c))

    Statements (1) and (4)

  4. ((d))

    Statements (2) and (3)

Show Answer
Answer: ((a))

Statements (1) and (3) 

71

What is the full form of SMTP? 

  1. ((a))

    Simple Mail Transfer Protocol

  2. ((b))

    Short Mail Transmission Protocol 

  3. ((c))

    Small Mail Transmission Protocol

  4. ((d))

    Server Mail Transfer Protocol

Show Answer
Answer: ((a))

Simple Mail Transfer Protocol

72

A single flip-flop is a modulo __________ counter.

  1. ((a))

    1

  2. ((b))

    2

  3. ((c))

    0

  4. ((d))

    3

Show Answer
Answer: ((a))

1

73

Who among the following laid the foundation of Qutub Minar at Delhi?

  1. ((a))

    Mahmud Ghazni

  2. ((b))

    Mohammad Ghori 

  3. ((c))

    Qutb-ud-din-Aibak

  4. ((d))

    Iltutmish

Show Answer
Answer: ((a))

Mahmud Ghazni

74

Which of the following expression will delete the entire array pointed to by q?

  1. ((a))

    delete all q; 

  2. ((b))

    delete array q;

  3. ((c))

    delete * q;

  4. ((d))

    delete[ ] q;

Show Answer
Answer: ((a))

delete all q; 

75

What is the theme of National Productivity Council in 2019?

  1. ((a))

    Quality Education to all 

  2. ((b))

    Higher GDP and sustainable living

  3. ((c))

    Economic growth in rural India

  4. ((d))

    Circular Economy for Productivity & Sustainability

Show Answer
Answer: ((a))

Quality Education to all 

76

The removal of carbon dioxide from the earth's atmosphere and the provision of long term storage of carbon in the terrestrial biosphere is known as-

  1. ((a))

    Photosynthesis

  2. ((b))

    Carbon fixing

  3. ((c))

    Carbon dating

  4. ((d))

    Carbon Sequestration 

Show Answer
Answer: ((a))

Photosynthesis

77

What is the work done to move a unit charge from one point to another in an electric circuit carrying some current, between those two points? 

  1. ((a))

    Pressure distance

  2. ((b))

    Potential difference

  3. ((c))

    Potential distance

  4. ((d))

    Pressure difference

Show Answer
Answer: ((a))

Pressure distance

78

In a stack, we can access the element-

  1. ((a))

    All of the options

  2. ((b))

    From any position 

  3. ((c))

    Which is entered at last 

  4. ((d))

    Which is entered at beginning

Show Answer
Answer: ((a))

All of the options

79

__________ is the process of overgrowth of plants and algae in lakes. 

  1. ((a))

    Photosynthesis

  2. ((b))

    Eutrophication

  3. ((c))

    Reproduction

  4. ((d))

    Transpiration

Show Answer
Answer: ((a))

Photosynthesis

80

In which of the following periods was the Second World War fought?

  1. ((a))

    1946 – 49

  2. ((b))

    1939 – 45

  3. ((c))

    1933 – 35

  4. ((d))

    1934 – 38

Show Answer
Answer: ((a))

1946 – 49

81

A bridge type full wave rectifier requires-

  1. ((a))

    One diode

  2. ((b))

    Two diodes

  3. ((c))

    Three diodes

  4. ((d))

    Four diodes

Show Answer
Answer: ((a))

One diode

82

Single-bit indicators that may be set or clear to show the results of logical or arithmetic operations are the-

  1. ((a))

    Flags

  2. ((b))

    Stack pointer 

  3. ((c))

    Accumulator

  4. ((d))

    Data pointer

Show Answer
Answer: ((a))

Flags

83

The antenna which provides circularly polarized waves is

  1. ((a))

    Helical antenna

  2. ((b))

    Small circular loop antenna

  3. ((c))

    Yagi-Uda antenna

  4. ((d))

    Parabolic reflector antenna

Show Answer
Answer: ((a))

Helical antenna

84

Which of the following fruits was declared as the State fruit of Tripura in June 2018?

  1. ((a))

    Orange

  2. ((b))

    Pineapple

  3. ((c))

    Strawberry

  4. ((d))

    Apple

Show Answer
Answer: ((a))

Orange

85

A dipole carries RMS current of about 300 A across the radiation resistance 2 Ω. What would be the power radiated by an antenna?

  1. ((a))

    135 kW

  2. ((b))

    200 kW

  3. ((c))

    180 kW

  4. ((d))

    90 kW 

Show Answer
Answer: ((a))

135 kW

86

If link transmits 2000 frames per second, and each slot has 16 bits, then the transmission rate of circuit of TDM is-

  1. ((a))

    8 Kbps

  2. ((b))

    32 Kbps

  3. ((c))

    2 Kbps

  4. ((d))

    16 Kbps 

Show Answer
Answer: ((a))

8 Kbps

87

Potato chips are stored in ___________ gas to prevent oxidation.

  1. ((a))

    Nitrogen

  2. ((b))

    Oxygen

  3. ((c))

    CO2

  4. ((d))

    Hydrogen

Show Answer
Answer: ((a))

Nitrogen

88

For a potential transformer the turns ratio is defined as the-

  1. ((a))

    n = Np ⁄ Ns

  2. ((b))

    n = Ns

  3. ((c))

    n = Ns ⁄ Np

  4. ((d))

    n = 1 ⁄ Np 

Show Answer
Answer: ((a))

n = Np ⁄ Ns

89

Which refers to the physical or logical arrangement of a network?

  1. ((a))

    Topology

  2. ((b))

    Mode of operation

  3. ((c))

    Signal flow

  4. ((d))

    Data flow

Show Answer
Answer: ((a))

Topology

90

The NAND gate output will be low if the two inputs are-

  1. ((a))

    1, 0

  2. ((b))

    0, 1

  3. ((c))

    1, 1

  4. ((d))

    0, 0

Show Answer
Answer: ((a))

1, 0

91

Korotkoff sounds are observed during measuring the-

  1. ((a))

    Blood pressure

  2. ((b))

    Speed of wind flow

  3. ((c))

    Electrical insulation

  4. ((d))

    Atmospheric pressure

Show Answer
Answer: ((a))

Blood pressure

92

Recently OPEC has boosted long-term oil demand forecast driven by developing nations. What does OPEC stand for?

  1. ((a))

    Oil Products and Energy Conservation

  2. ((b))

    Oil Products of Exporting Countries

  3. ((c))

    Oil Producing and Exporting Countries

  4. ((d))

    Organization of the Petroleum Exporting Countries

Show Answer
Answer: ((a))

Oil Products and Energy Conservation

93

Two or more devices share a single link in ___________ connection.

  1. ((a))

    Unipoint

  2. ((b))

    Primary

  3. ((c))

    Multipoint

  4. ((d))

    Point to point 

Show Answer
Answer: ((a))

Unipoint

94

Schering bridge is used to -

  1. ((a))

    Measure low resistance

  2. ((b))

    Measure the power

  3. ((c))

    Measure mutual inductance

  4. ((d))

    Measure the capacitance of a dissipation factor

Show Answer
Answer: ((a))

Measure low resistance

95

Token Ring is a data link technology for-

  1. ((a))

    WAN

  2. ((b))

    MAN

  3. ((c))

    Both WAN and MAN 

  4. ((d))

    LAN

Show Answer
Answer: ((a))

WAN

96

Which of the following hills is situated on India's north-eastern border with Myanmar?

  1. ((a))

    Patkai

  2. ((b))

    Sahyadhri

  3. ((c))

    Vindhyachal

  4. ((d))

    Satpura

Show Answer
Answer: ((a))

Patkai

97

Shunt is connected in parallel to ammeter to;

  1. ((a))

    Decrease the sensitivity

  2. ((b))

    Measure heavy current

  3. ((c))

    Increase the sensitivity

  4. ((d))

    Increase the resistance

Show Answer
Answer: ((a))

Decrease the sensitivity

98

A meter has a full scale of 90° at a current of 1 A. This meter has a perfect square law response. What is the current when the deflection angle is 45°?

  1. ((a))

    0.707 A

  2. ((b))

    0.67 A

  3. ((c))

    0.25 A

  4. ((d))

    0.5 A 

Show Answer
Answer: ((a))

0.707 A

99

What is the use of intersection operator?

  1. ((a))

    To get all the tuples

  2. ((b))

    To get the different tuples 

  3. ((c))

    To get the repeating tuples

  4. ((d))

    To get the common tuples

Show Answer
Answer: ((a))

To get all the tuples

100

Which of the following is NOT a binary number? 

  1. ((a))

    1111

  2. ((b))

    101

  3. ((c))

    11E

  4. ((d))

    000

Show Answer
Answer: ((a))

1111

101

What is the ratio of the density of the substance to the density of water called?

  1. ((a))

    Relative density

  2. ((b))

    Surface area

  3. ((c))

    Liquid density

  4. ((d))

    Volume

Show Answer
Answer: ((a))

Relative density

102

One-third of the members of the Rajya Sabha retires after every _________ year. 

  1. ((a))

    Fourth

  2. ((b))

    Fifth

  3. ((c))

    Second

  4. ((d))

    Third

Show Answer
Answer: ((a))

Fourth

103

Bandodkar Trophy is associated with which sport?

  1. ((a))

    Hockey

  2. ((b))

    Cricket

  3. ((c))

    Football

  4. ((d))

    Badminton

Show Answer
Answer: ((a))

Hockey

104

Vestigial sideband is most commonly used in-

  1. ((a))

    All of the options

  2. ((b))

    Telephony

  3. ((c))

    Television transmission

  4. ((d))

    Radio transmission

Show Answer
Answer: ((a))

All of the options

105

Who won Gold in Dan Kovlov 2019 in the Men’s freestyle wrestling 65kg category? 

  1. ((a))

    Sushil Kumar

  2. ((b))

    Yogeshwar Dutt

  3. ((c))

    Bajrang Punia

  4. ((d))

    Mahabali Shera

Show Answer
Answer: ((a))

Sushil Kumar

106

When the frequency of applied voltage in a series RL circuit is increased, what happens to the inductive reactance?

  1. ((a))

    Decreases

  2. ((b))

    Increases

  3. ((c))

    Remains the same

  4. ((d))

    Becomes zero

Show Answer
Answer: ((a))

Decreases

107

A reference variable must be initialized at the time of ___________.

  1. ((a))

    Initialization

  2. ((b))

    Running

  3. ((c))

    Definition

  4. ((d))

    Declaration

Show Answer
Answer: ((a))

Initialization

108

Wires that carry equal and opposite currents are twisted because-

  1. ((a))

    It is easy to coil 

  2. ((b))

    The magnetic field at distant points are reduced by currents in opposite directions and distance from centres is nullified 

  3. ((c))

    While laying, the two wires may fall apart

  4. ((d))

    It reduces the magnetic field away from it

Show Answer
Answer: ((a))

It is easy to coil 

109

Which of the following pairs of octal and binary numbers are NOT equal?

  1. ((a))

    (111110111)2 = (767)8

  2. ((b))

    (110110101)2 = (665)8

  3. ((c))

    (10101.11)2 = (25.6)8

  4. ((d))

    (11010)2 = (62)8

Show Answer
Answer: ((a))

(111110111)2 = (767)8

110

__________ is a protocol that allows for the secure movement of data from one network to another.

  1. ((a))

    Transferring

  2. ((b))

    Trafficking

  3. ((c))

    Tunneling

  4. ((d))

    Switching

Show Answer
Answer: ((a))

Transferring

111

Which of the following operators has left to right associativity?

  1. ((a))

    &=

  2. ((b))

    Sizeof

  3. ((c))

    ?:

  4. ((d))

    [ ] 

Show Answer
Answer: ((a))

&=

112

Calculate the power in a line having a resistance of 4 Ohms when 8 A direct-current is flowing in the line.

  1. ((a))

    231 Watts

  2. ((b))

    239 Watts

  3. ((c))

    256 Watts

  4. ((d))

    241 Watts

Show Answer
Answer: ((a))

231 Watts

113

What is the total external data memory that can be interfaced to the 8051?

  1. ((a))

    256 K 

  2. ((b))

    64 K

  3. ((c))

    32 K

  4. ((d))

    128 K

Show Answer
Answer: ((a))

256 K 

114

Number of cells connected in series provide a

  1. ((a))

    Lower voltage

  2. ((b))

    Higher voltage 

  3. ((c))

    Higher current

  4. ((d))

    Lower current 

Show Answer
Answer: ((a))

Lower voltage

115

The number of digit 1 present in the binary representation of 3 × 512 + 5 × 64 + 7 × 8 + 3 is: 

  1. ((a))

    8

  2. ((b))

    16

  3. ((c))

    9

  4. ((d))

    10

Show Answer
Answer: ((a))

8

116

Dichloro Diphenyl Trichloroethane(DDT) is-

  1. ((a))

    More soluble in fat than water 

  2. ((b))

    Less soluble in fat than water

  3. ((c))

    Not soluble in water

  4. ((d))

    Not soluble in fat

Show Answer
Answer: ((a))

More soluble in fat than water 

117

What is the full form of IRDAI?

  1. ((a))

    Insurance Regulation And Disciplinary Action of India

  2. ((b))

    Insurance Regulatory and Development Authority of India

  3. ((c))

    Insurance Research And Development Aid of India

  4. ((d))

    Insurance Regulation And Development Aid of India

Show Answer
Answer: ((a))

Insurance Regulation And Disciplinary Action of India

118

How much is one terabyte equal to?

  1. ((a))

    1024 kilobytes

  2. ((b))

    1024 bytes

  3. ((c))

    1024 gigabytes

  4. ((d))

    1024 megabytes

Show Answer
Answer: ((a))

1024 kilobytes

119

What does PPP stands for with respect to Data Communication? 

  1. ((a))

    Packet to Point Protocol

  2. ((b))

    Point to Point Protocol

  3. ((c))

    Point to Packet Protocol

  4. ((d))

    Packet to Packet Prototcol

Show Answer
Answer: ((a))

Packet to Point Protocol

120

Minerals and Oil are-

  1. ((a))

    Non-renewable resources

  2. ((b))

    Artificial resources

  3. ((c))

    Water resources

  4. ((d))

    Renewable resources

Show Answer
Answer: ((a))

Non-renewable resources

121

The direction of statically induced EMF can be obtained with the help of-

  1. ((a))

    Kirchhoff's current law 

  2. ((b))

    Lenz law

  3. ((c))

    Lorentz law

  4. ((d))

    Laplace law

Show Answer
Answer: ((a))

Kirchhoff's current law 

122

In phase modulation, frequency deviation is-

  1. ((a))

    Independent of the modulating signal frequency

  2. ((b))

    Inversely proportional to the square root of the modulating frequency

  3. ((c))

    Inversely proportional to the modulating signal frequency

  4. ((d))

    Directly proportional to the amplitude of the modulating signal

Show Answer
Answer: ((a))

Independent of the modulating signal frequency

123

The maximum temperature permitted to class A electrical insulation is-

  1. ((a))

    155° C

  2. ((b))

    180° C

  3. ((c))

    120° C

  4. ((d))

    105° C

Show Answer
Answer: ((a))

155° C

124

What is the average case time complexity of bubble sort?

  1. ((a))

    θ(n log(n)) 

  2. ((b))

    θ(n + k) 

  3. ((c))

    θ(nk)

  4. ((d))

    θ(n^2) 

Show Answer
Answer: ((a))

θ(n log(n)) 

125

_________ is used in the automatic heating appliances to control the temperature. 

  1. ((a))

    Thermostat

  2. ((b))

    Rectifier

  3. ((c))

    Transformer

  4. ((d))

    Voltage regulator 

Show Answer
Answer: ((a))

Thermostat

126

How can a monostable multivibrator be modified into a ramp generator?

  1. ((a))

    Replace capacitor by constant current source

  2. ((b))

    Replace resistor by constant current source

  3. ((c))

    Connect a constant current source to trigger input

  4. ((d))

    Connect a constant current source to trigger output

Show Answer
Answer: ((a))

Replace capacitor by constant current source

127

In ideal case, the charging current for 200 Ah battery would be-

  1. ((a))

    12 A

  2. ((b))

    15 A

  3. ((c))

    10 A

  4. ((d))

    20 A

Show Answer
Answer: ((a))

12 A

128

With which game is Bhagyashree Thipsey associated?

  1. ((a))

    Chess

  2. ((b))

    Football

  3. ((c))

    Swimming

  4. ((d))

    Badminton

Show Answer
Answer: ((a))

Chess

129

A graphic record of heart sounds is known as-

  1. ((a))

    Electrocardiogram

  2. ((b))

    Phonocardiogram

  3. ((c))

    Vectorcardiogram

  4. ((d))

    Electroencephalogram

Show Answer
Answer: ((a))

Electrocardiogram

130

In an E-R diagram, multivalued attributes are represented by-

  1. ((a))

    Rectangle

  2. ((b))

    Dashed ellipse

  3. ((c))

    Double ellipse

  4. ((d))

    Diamond

Show Answer
Answer: ((a))

Rectangle

131

Which of the following requires a device driver?

  1. ((a))

    Disk

  2. ((b))

    Register

  3. ((c))

    Main memory

  4. ((d))

    Cache

Show Answer
Answer: ((a))

Disk

132

The most commonly used electrical conductor is-

  1. ((a))

    Copper

  2. ((b))

    Tin

  3. ((c))

    Brass

  4. ((d))

    Lead

Show Answer
Answer: ((a))

Copper

133

Convert the hexadecimal number C6 to binary number.

  1. ((a))

    10010110

  2. ((b))

    11000100

  3. ((c))

    11000110

  4. ((d))

    10100110

Show Answer
Answer: ((a))

10010110

134

The excess-3 code of decimal 7 is represented by-

  1. ((a))

    1001

  2. ((b))

    1100

  3. ((c))

    1011

  4. ((d))

    1010

Show Answer
Answer: ((a))

1001

135

The frequency of a sound wave is 25 Hz and its wavelength is 4 m. What is the distance travelled by the sound wave in 2 s? 

  1. ((a))

    200 m 

  2. ((b))

    80 m

  3. ((c))

    400 m

  4. ((d))

    100 m

Show Answer
Answer: ((a))

200 m 

136

Which of the following data types represents the value 136.24?

  1. ((a))

    Int

  2. ((b))

    Bool

  3. ((c))

    Void

  4. ((d))

    Double

Show Answer
Answer: ((a))

Int

137

In an intrinsic semiconductor-

  1. ((a))

    Both electrons and holes carry current with holes being the minority carriers

  2. ((b))

    Only holes carry current 

  3. ((c))

    Both electrons and holes carry current 

  4. ((d))

    Only electrons carry current

Show Answer
Answer: ((a))

Both electrons and holes carry current with holes being the minority carriers

138

MIN related to Communication Engineeing stands for-

  1. ((a))

    Mobile Identification Number

  2. ((b))

    Mobility In Network

  3. ((c))

    Mobile Internet

  4. ((d))

    Mobile Internal Network

Show Answer
Answer: ((a))

Mobile Identification Number

139

Which of the following is not a keyword in 'C'? 

  1. ((a))

    Function

  2. ((b))

    Volatile

  3. ((c))

    Goto

  4. ((d))

    Auto

Show Answer
Answer: ((a))

Function

140

How many bytes of bit addressable memory is present in 8051 based microcontrollers?

  1. ((a))

    8

  2. ((b))

    32

  3. ((c))

    16

  4. ((d))

    128

Show Answer
Answer: ((a))

8

141

What are the celestial bodies revolving around the planets called as? 

  1. ((a))

    Star

  2. ((b))

    Satellites

  3. ((c))

    Comets

  4. ((d))

    Meteors

Show Answer
Answer: ((a))

Star

142

If K and L shells of an atom are full, then what would be the total number of electrons in the atom?

  1. ((a))

    11

  2. ((b))

    10

  3. ((c))

    12

  4. ((d))

    9

Show Answer
Answer: ((a))

11

143

Capacitive reactance is inversely proportional to-

  1. ((a))

    Frequency

  2. ((b))

    Voltage

  3. ((c))

    Amplitude

  4. ((d))

    Current

Show Answer
Answer: ((a))

Frequency

144

The device which changes from serial data to parallel data is: 

  1. ((a))

    Demultiplexer

  2. ((b))

    Multiplexer

  3. ((c))

    Flip-Flop

  4. ((d))

    Counter

Show Answer
Answer: ((a))

Demultiplexer

145

A Yagi antenna is a directional antenna consisting of parasitic elements-

  1. ((a))

    With one or more directors 

  2. ((b))

    With a reflector and one or more directors

  3. ((c))

    Only director 

  4. ((d))

    With a reflector

Show Answer
Answer: ((a))

With one or more directors 

146

Pandit Jasraj is an Indian classical vocalist, belonging to the _________ gharana (Schools) of Hindustani classical music.

  1. ((a))

    Mewati

  2. ((b))

    Agra

  3. ((c))

    Kirana

  4. ((d))

    Patiala

Show Answer
Answer: ((a))

Mewati

147

Thin gate oxide in a CMOS process is preferably grown using

  1. ((a))

    Ion implantation

  2. ((b))

    Dry oxidation

  3. ((c))

    Wet oxidation

  4. ((d))

    Epitaxial deposition 

Show Answer
Answer: ((a))

Ion implantation

148

A single instruction to clear the lower four bits of the accumulator in 8085 assembly language is-

  1. ((a))

    ANI 0FH

  2. ((b))

    XRI 0FH

  3. ((c))

    XRI F0H

  4. ((d))

    ANI F0H

Show Answer
Answer: ((a))

ANI 0FH

149

What is the ideal input resistance of an Op-amp (operational amplifier)?

  1. ((a))

    Zero

  2. ((b))

    Infinity

  3. ((c))

    Relative resistance 

  4. ((d))

    Same as output resistance

Show Answer
Answer: ((a))

Zero

150

In rectilinear motion, the objects move along-

  1. ((a))

    Straight line

  2. ((b))

    Ellipse

  3. ((c))

    Parabola

  4. ((d))

    Circle

Show Answer
Answer: ((a))

Straight line

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