Official Paper

RRB JE CBT-II (Electronics) Official Paper (Held On: 31 Aug, 2019 Shift 1) (Previous Year Paper)

150 questions · 120 minutes · with answers · free

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Test (150 questions)

A labeled statement consists of an identifier followed by -

((a))
Equal to
((b))
Colon
((c))
Semicolon
((d))
Comma

Show Answer

Answer: ((a))

Equal to

What is the device used for measuring the power in an optical signal?

((a))
Optical multi-analyte meter
((b))
Optical spectrometer
((c))
Optical power meter
((d))
Optical fiber length meter

Show Answer

Answer: ((a))

Optical multi-analyte meter

The intermediate frequency of a superhetrodyne receiver is 450 kHz. If it is tuned to 1200 kHz, the image frequency will be -

((a))
1600 kHz
((b))
2100 kHz
((c))
900 kHz
((d))
750 kHz

Show Answer

Answer: ((a))

1600 kHz

When the function is defined inside a class, it is called -

((a))
Inline function
((b))
Member variable
((c))
Member function
((d))
Data function

Show Answer

Answer: ((a))

Inline function

Which of the following is an example of an active device?

((a))
Electric bulb
((b))
Transformer
((c))
Resistor
((d))
Transistors

Show Answer

Answer: ((a))

Electric bulb

Which of the following memories can be programmed once by the user and then cannot be erased and reprogrammed?

((a))
EEPROM
((b))
ROM
((c))
Flash Memory
((d))
EPROM

Show Answer

Answer: ((a))

EEPROM

In which of the following types of A/D converter does the conversion time almost double for every bit added to the device?

((a))
Counter type A/D converter
((b))
Tracking type A/D converter
((c))
Single-slope integrating type A/D converter
((d))
Successive approximation type A/D converter

Show Answer

Answer: ((a))

Counter type A/D converter

________ is used for transmitting files between computers on the Internet over TCP/IP connections.

((a))
FTP
((b))
ASCII
((c))
BCD
((d))
HTTP

Show Answer

Answer: ((a))

FTP

The RF signal strength at any point of the cable is measured by -

((a))
Wobbuloscope
((b))
Field strength meter
((c))
Oscilloscope
((d))
Multimeter

Show Answer

Answer: ((a))

Wobbuloscope

Which of the following keyword is used to transfer control from a function back to the calling function?

((a))
Return
((b))
Goto
((c))
Go back
((d))
Switch

Show Answer

Answer: ((a))

Return

Which of the following components store energy in the form of electrical charges?

((a))
Capacitors
((b))
Transformers
((c))
Resistors
((d))
Inductors

Show Answer

Answer: ((a))

Capacitors

Alloy used for making permanent magnet is -

((a))
Zamak
((b))
Alnico
((c))
Silumin
((d))
Duralumin

Show Answer

Answer: ((a))

Zamak

OSI stands for -

((a))
Open System Interdependence
((b))
Open Site Interconnection
((c))
Open Site Interdependence
((d))
Open System Interconnection

Show Answer

Answer: ((a))

Open System Interdependence

When the peak power is 1000000 watts and the average power is 800 watts, then the duty cycle is -

((a))
0.08 percent
((b))
0.008 percent
((c))
0.8 percent
((d))
8 percent

Show Answer

Answer: ((a))

0.08 percent

Which of the following is used to change "Siva" into "Ramu" in the "FirstName" column in the Students table?

((a))
UPDATE Students SET FirstName='Siva' INTO FirstName='Ramu'
((b))
MODIFY Students SET FirstName='Siva' INTO FirstName='Ramu'
((c))
MODIFY Studnets SET FirstName='Ramu' WHERE FirstName='Siva'
((d))
UPDATE Students SET FirstName='Ramu' WHERE FirstName='Siva'

Show Answer

Answer: ((a))

UPDATE Students SET FirstName='Siva' INTO FirstName='Ramu'

Corrosion or rusting can be prevented by -

((a))
Electroplating process
((b))
All of the options
((c))
Painting the surface of the metal
((d))
Oiling the surface of the metal

Show Answer

Answer: ((a))

Electroplating process

The number of flip-flops required in a decade counter are -

((a))
10
((b))
2
((c))
3
((d))
4

Show Answer

Answer: ((a))

Which of the following is/are an operations performed on linked list?

((a))
Traversal
((b))
Deletion
((c))
Insertion
((d))
All of the options

Show Answer

Answer: ((a))

Traversal

The range of frequency generated by VHF oscillator is -

((a))
300 MHz - 3 GHz
((b))
Above 3 GHz
((c))
30 MHz - 300 MHz
((d))
20 kHz - 30 MHz

Show Answer

Answer: ((a))

300 MHz - 3 GHz

What is the built in library function to compare two strings?

((a))
string_cmp()
((b))
strcmp()
((c))
str_cm()
((d))
str_compare()

Show Answer

Answer: ((a))

string_cmp()

The 8085 has two registers known as primary data pointers. These are registers

((a))
B and C
((b))
D and E
((c))
H and L
((d))
C and D

Show Answer

Answer: ((a))

B and C

First In First Out (FIFO) is used in -

((a))
Stack
((b))
Linked list
((c))
Queue
((d))
Tree

Show Answer

Answer: ((a))

Stack

In an 8085 microprocessor, the instruction CMP B has been executed while the contents of accumulator is less than that of register B. As a result, carry flag and zero flag will be respectively -

((a))
Set, set
((b))
Set, reset
((c))
Reset, set
((d))
Reset, reset

Show Answer

Answer: ((a))

Set, set

What type of keyboard is used in fast food store, restaurants and shops?

((a))
Numeric keypads
((b))
Numeric Keyboard
((c))
Concept keyboard
((d))
Concise keyboard

Show Answer

Answer: ((a))

Numeric keypads

The first page that you normally view at a Website is -

((a))
First page
((b))
Front page
((c))
Home page
((d))
Master page

Show Answer

Answer: ((a))

First page

A relay is used to -

((a))
Sense the fault
((b))
Control low voltage circuits with the help of high voltage signals
((c))
Control high voltage circuits with the help of low voltage signals
((d))
Break the fault current

Show Answer

Answer: ((a))

Sense the fault

The electronic circuit that converts AC to DC where the DC output peak value can be greater than the AC input peak value is -

((a))
Voltage multiplier
((b))
Clipper
((c))
Amplifier
((d))
Clamper

Show Answer

Answer: ((a))

Voltage multiplier

What is the process of designing more than 100 gates on a single chip?

((a))
MSI
((b))
SSI
((c))
LSI
((d))
VLSI

Show Answer

Answer: ((a))

MSI

A conductor is said to be perfect if it has ________ electrical conductivity.

((a))
Zero
((b))
Finite
((c))
Infinite
((d))
Unity

Show Answer

Answer: ((a))

Zero

Which logic gate is similar to the function of two parallel switches?

((a))
NOR
((b))
OR
((c))
AND
((d))
NAND

Show Answer

Answer: ((a))

NOR

The drift of a hole in a semiconductor is brought by -

((a))
The vacancy being filled by an ion
((b))
The vacancy being filled by a valence electron from a neighboring atoms
((c))
The vacancy being filled by a free electron
((d))
The movement of an atom in the solid

Show Answer

Answer: ((a))

The vacancy being filled by an ion

Nuclear fuel in the sun is -

((a))
Alpha particles
((b))
Uranium
((c))
Hydrogen
((d))
Helium

Show Answer

Answer: ((a))

Alpha particles

In case of amplifiers which coupling gives the highest gain?

((a))
Resistance coupling
((b))
Transformer coupling
((c))
Impedance coupling
((d))
Capacitance coupling

Show Answer

Answer: ((a))

Resistance coupling

The number of unused states in a n-bit Johnson Counter is:

((a))
2ⁿ - 2n
((b))
2^{n - 1}
((c))
2ⁿ - n
((d))
2n

Show Answer

Answer: ((a))

2ⁿ - 2n

What kind of computer program is used to convert mnemonic code to machine code?

((a))
Debug
((b))
C++
((c))
Fortran
((d))
Assembler

Show Answer

Answer: ((a))

Debug

Four terminal approach is used in measuring low resistance because it -

((a))
Eliminates stray inductance
((b))
Eliminates thermoelectric energy
((c))
Eliminates the effect of leads and currents
((d))
Eliminates stray capacitance

Show Answer

Answer: ((a))

Eliminates stray inductance

A logic circuit which is used to change a BCD number into an equivalent decimal number is -

((a))
Decoder
((b))
Encoder
((c))
Multiplexer
((d))
Code converter

Show Answer

Answer: ((a))

Decoder

How many digits in binary notation are required for the decimal number 17?

((a))
6
((b))
4
((c))
7
((d))
5

Show Answer

Answer: ((a))

Which of the following in NOT a type of Internetworking?

((a))
Intranet
((b))
Extranet
((c))
Local Area Network
((d))
Internet

Show Answer

Answer: ((a))

Intranet

A diode for which you can change the reverse bias, and thus vary the capacitance is called a

((a))
Varactor diode
((b))
tunnel diode
((c))
Zener diode
((d))
switching diode

Show Answer

Answer: ((a))

Varactor diode

The process of removing unwanted part of an image is called -

((a))
Border
((b))
Cutting
((c))
Hiding
((d))
Cropping

Show Answer

Answer: ((a))

Border

Which of the following is a correct comment in C++?

((a))
/* Comment */
((b))
*/ Comments */
((c))
{ Comment }
((d))
** Comment **

Show Answer

Answer: ((a))

/* Comment */

Which of the following is NOT a boot sector virus?

((a))
Brain
((b))
Stoned
((c))
Elk cloner
((d))
Creeper

Show Answer

Answer: ((a))

Brain

Stadia is a video game streaming of -

((a))
Google
((b))
Apple
((c))
Microsoft
((d))
Atari

Show Answer

Answer: ((a))

Google

Full form of POPs is -

((a))
Persistent Organic Pesticides
((b))
Permanent Organic Pesticides
((c))
Persistent Oxidizing Pollutants
((d))
Persistent Organic Pollutants

Show Answer

Answer: ((a))

Persistent Organic Pesticides

The thickness of a 50 Hz transformer lamination is -

((a))
0.5 mm
((b))
0.15 mm
((c))
3.5 mm
((d))
0.35 mm

Show Answer

Answer: ((a))

0.5 mm

Narang Cup is associated with which sport?

((a))
Badminton
((b))
Football
((c))
Hockey
((d))
Basketball

Show Answer

Answer: ((a))

Badminton

LAN, WAN and MAN are computer networks covering different area. Their first alphabets L, W and M respectively stand for -

((a))
Long, Wireless and Metropolitan
((b))
Local, Wide and Metropolitan
((c))
Least, Wireless and Maximum
((d))
Local, World and Middle

Show Answer

Answer: ((a))

Long, Wireless and Metropolitan

Where is Kandaleru Dam located?

((a))
Goa
((b))
Maharashtra
((c))
Kerala
((d))
Andhra Pradesh

Show Answer

Answer: ((a))

Goa

Which material has the highest electrical conductivity?

((a))
Steel
((b))
Silver
((c))
Aluminium
((d))
Lead

Show Answer

Answer: ((a))

Steel

A high Q-quartz crystal exhibits series resonance at the frequency ω_s and parallel resonance at ω_p, then -

((a))
ω_s is very close but less than ω_p
((b))
ω_s is very close, but greater than ω_p
((c))
ω_s >> ω_p
((d))
ω_s << ω_p

Show Answer

Answer: ((a))

ω_s is very close but less than ω_p

When a magnesium ribbon is burnt in air, the ash formed is-

((a))
Pink
((b))
Black
((c))
White
((d))
Yellow

Show Answer

Answer: ((a))

Pink

Name the technique used to separate butter from curd.

((a))
Centrifugation
((b))
Sublimation
((c))
Evaporation
((d))
Filtration

Show Answer

Answer: ((a))

Centrifugation

_______ are electronic switches that actuate when a small external voltage is applied across the terminals.

((a))
Electromechanical relays
((b))
Reed relays
((c))
Solid state relays
((d))
Latching relays

Show Answer

Answer: ((a))

Electromechanical relays

A semiconductor has generally ______ valence electrons.

((a))
3
((b))
4
((c))
6
((d))
2

Show Answer

Answer: ((a))

Name the PCB side on which the components are mounted.

((a))
Component side
((b))
Solder side
((c))
Copper side
((d))
Track side

Show Answer

Answer: ((a))

Component side

A 0-25 A ammeter has a guaranteed accuracy of 1 percent of full-scale reading. The current measured by this instrument is 10 A. Determine the limiting error in percentage.

((a))
10.00%
((b))
7.50%
((c))
2.50%
((d))
5.00%

Show Answer

Answer: ((a))

10.00%

The function of de-emphasis circuit is -

((a))
To boost HF response of audio amplifier
((b))
To maintain adequate S/N ratio
((c))
To bring back higher frequencies to their original level
((d))
To bring back lower frequencies to their original level

Show Answer

Answer: ((a))

To boost HF response of audio amplifier

Which of the following is called the address operator?

((a))
((b))
%
((c))
&
((d))
_

Show Answer

Answer: ((a))

A _______ is an electronic circuit that changes the DC level of a signal to the desired level without changing the shape of the applied signal.

((a))
Rectifier
((b))
Clamper
((c))
Slicer
((d))
Limiter

Show Answer

Answer: ((a))

Rectifier

In a compound such as water, the ratio of the mass of hydrogen to the mass of oxygen is always -

((a))
1 : 8
((b))
1 : 16
((c))
3 : 16
((d))
2 : 8

Show Answer

Answer: ((a))

1 : 8

What is the hexadecimal equivalent of this binary number (1110)₂?

((a))
F
((b))
B
((c))
A
((d))
E

Show Answer

Answer: ((a))

The server on the Internet is also known as -

((a))
Gateway
((b))
Repeater
((c))
Host
((d))
Hub

Show Answer

Answer: ((a))

Gateway

The other name for the common collector amplifier is -

((a))
Base follower
((b))
Emitter follower
((c))
Collect follower
((d))
Impedance follower

Show Answer

Answer: ((a))

Base follower

Resting potential of neuron is -

((a))
+0.1 mV
((b))
-70 mV
((c))
-210 mV
((d))
+20 mV

Show Answer

Answer: ((a))

+0.1 mV

Who among the following was the President of the Constituent Assembly of India?

((a))
C. Rajagopalachari
((b))
Dr. B.R. Ambedkar
((c))
Dr. Rajendra Prasad
((d))
Jawaharlal Nehru

Show Answer

Answer: ((a))

C. Rajagopalachari

1 dB corresponds to ______ change in power level.

((a))
35%
((b))
26%
((c))
50%
((d))
14%

Show Answer

Answer: ((a))

35%

________ is a device that is used to connect multiple networks and passes packets from one network to the other network.

((a))
Hub
((b))
Gateway
((c))
Proxy Server
((d))
Switch

Show Answer

Answer: ((a))

Hub

Three resistors each of 3 Ω are connected in parallel; the equivalent resistance is

((a))
1 Ω
((b))
6 Ω
((c))
9 Ω
((d))
1/3 Ω

Show Answer

Answer: ((a))

1 Ω

Montreal protocol refers to -

((a))
Substances that deplete ozone layer
((b))
Biosafety of genetically modified organisms
((c))
Global warming and climate change
((d))
Persistent organic fertilizers

Show Answer

Answer: ((a))

Substances that deplete ozone layer

If two capacitors of 4 pF each are connected in series, their total capacitance is -

((a))
2 pF
((b))
4 pF
((c))
16 pF
((d))
8 pF

Show Answer

Answer: ((a))

2 pF

Which of the following is the latest version of Android?

((a))
Android Oreo
((b))
Android Pie
((c))
Android Nougat
((d))
Android Kitkat

Show Answer

Answer: ((a))

Android Oreo

Molarity is -

((a))
The number of moles of a solute present in one litre of the solvent
((b))
The number of moles of a solute present in one kilogram of the solution
((c))
The number of moles of a solute present in one kilogram of the solvent
((d))
The number of moles of a solute present in one litre of the solution

Show Answer

Answer: ((a))

The number of moles of a solute present in one litre of the solvent

The IC used for making a bidirectional universal shift register is -

((a))
7498
((b))
7494
((c))
74194
((d))
7495

Show Answer

Answer: ((a))

7498

Which symbol is used as a statement terminator in C?

((a))
!
((b))
((c))
%
((d))
;

Show Answer

Answer: ((a))

Heating effect of electric current is used in -

((a))
Both fan and television
((b))
Television
((c))
Fan
((d))
Electric bulb

Show Answer

Answer: ((a))

Both fan and television

Select the most environment friendly method of insect control from the following:

((a))
Crop rotation and intercropping
((b))
Application of Chlorinated hydrocarbons
((c))
Application of Organophosphates
((d))
Application of pyrethroids

Show Answer

Answer: ((a))

Crop rotation and intercropping

The envelope detector is a/an -

((a))
Product demodulator
((b))
Coherent detector
((c))
Synchronous detector
((d))
Asynchronous detector

Show Answer

Answer: ((a))

Product demodulator

Transformer coupling is not used in audio frequency amplifiers, because -

((a))
The cost of transformer is high
((b))
The transformers are bulky
((c))
All of the options
((d))
It introduces frequency distortion

Show Answer

Answer: ((a))

The cost of transformer is high

What is the capacity of ISRO rocket launch viewing facility that was opened for first time in Andhra Pradesh?

((a))
8000
((b))
6000
((c))
5000
((d))
7000

Show Answer

Answer: ((a))

8000

Which of the following is NOT a semiconductor?

((a))
Wood
((b))
Selenium
((c))
Germanium
((d))
Silicon

Show Answer

Answer: ((a))

Wood

Dielectric strength is expressed in _______ per unit thickness of the insulating material.

((a))
Volts
((b))
Watts
((c))
Ohms
((d))
Amperes

Show Answer

Answer: ((a))

Volts

Gunn diode is made of -

((a))
Gallium Arsenide
((b))
Germanium
((c))
Silicon
((d))
Selenium

Show Answer

Answer: ((a))

Gallium Arsenide

Which of the following is NOT an halogen?

((a))
Iodine
((b))
Tellurium
((c))
Fluorine
((d))
Astatine

Show Answer

Answer: ((a))

Iodine

In an electrical circuit, fuse is blown and the circuit is cut-off due to -

((a))
Low voltage
((b))
Excessive current
((c))
High inductance
((d))
Excessive voltage

Show Answer

Answer: ((a))

Low voltage

Which of the following antennas is the standard reference antenna for the directiveness?

((a))
Half wave doublet
((b))
Isotropic antenna
((c))
Rhombic antenna
((d))
Elementary doublet

Show Answer

Answer: ((a))

Half wave doublet

What is the full form of ISDN with respect to Communication Engineering?

((a))
Inter Subscriber Digital Network
((b))
Inter Services Digital Network
((c))
Integrated Services Digital Network
((d))
Integrated Subscriber Digital Network

Show Answer

Answer: ((a))

Inter Subscriber Digital Network

The RMS value and mean value is the same in the case of:

((a))
Sine wave
((b))
Half wave rectified sine wave
((c))
Triangular wave
((d))
Symmetrical Square wave

Show Answer

Answer: ((a))

Sine wave

The register in the 8085A that is used to keep track of the memory address of the next op-code to be run in the program is the-

((a))
Program counter
((b))
Accumulator
((c))
Stack pointer
((d))
Instruction pointer

Show Answer

Answer: ((a))

Program counter

Which of the following function is used to find the last occurrence of a character in a string?

((a))
strstr()
((b))
strnset()
((c))
strrchr()
((d))
laststr()

Show Answer

Answer: ((a))

strstr()

What is the ripple factor of full-wave bridge rectifier?

((a))
1.321
((b))
0.482
((c))
1.212
((d))
1.414

Show Answer

Answer: ((a))

1.321

Which isotope is used in the treatment of Goitre?

((a))
Uranium
((b))
Iodine
((c))
Cobalt
((d))
Chlorine

Show Answer

Answer: ((a))

Uranium

Applets are written in _______ programming language.

((a))
C
((b))
Java
((c))
C#
((d))
C++

Show Answer

Answer: ((a))

When was the National Green Tribunal (NGT) established?

((a))
2006
((b))
2005
((c))
2000
((d))
2010

Show Answer

Answer: ((a))

2006

A half wave rectifier requires -

((a))
One diode
((b))
Metal rectifier in bridge formation
((c))
Four diodes in a bridge formation
((d))
Two diodes

Show Answer

Answer: ((a))

One diode

The power of a concave lens is -0.5 D. What is its focal length?

((a))
4 m
((b))
-2 m
((c))
-3 m
((d))
-4 m

Show Answer

Answer: ((a))

4 m

What is the value range for the standard integer type 'int'?

((a))
-32768 to +32767
((b))
0 to 256
((c))
No specific range
((d))
-65536 to +65536

Show Answer

Answer: ((a))

-32768 to +32767

Which of the following concepts is used by ultra sound scanners to find abnormalities in internal organs of human beings?

((a))
Ultrasonic waves are converted to sound waves by defects in organs
((b))
Ultra sonic waves produce harmful effects when defects are found
((c))
Ultrasonic waves are sent through the tissues of the body, and it gets reflected
((d))
Ultrasonic waves pass throughout the body without reflecting

Show Answer

Answer: ((a))

Ultrasonic waves are converted to sound waves by defects in organs

Which state has the longest coastline in India?

((a))
Gujarat
((b))
Tamil Nadu
((c))
Andhra Pradesh
((d))
Karnataka

Show Answer

Answer: ((a))

Gujarat

100

The radix/base of octal number system is -

((a))
4
((b))
8
((c))
2
((d))
10

Show Answer

Answer: ((a))

101

Sonal Mansingh is an Indian -

((a))
Western singer
((b))
Classical singer
((c))
Western dancer
((d))
Classical dancer

Show Answer

Answer: ((a))

Western singer

102

Who among the following founded the Banaras Hindu University?

((a))
Madan Mohan Malaviya
((b))
Gopala Krishna Gokhale
((c))
Lala Lajpat Rai
((d))
Jawahar Lal Nehru

Show Answer

Answer: ((a))

Madan Mohan Malaviya

103

A double beam oscilloscope has

((a))
Two screens
((b))
Two electron guns
((c))
Two different phosphor coatings
((d))
One waveform divided into two parts

Show Answer

Answer: ((a))

Two screens

104

Which of the following components convert fixed DC to variable DC?

((a))
Rectifiers
((b))
Choppers
((c))
Cycloconverters
((d))
Inverters

Show Answer

Answer: ((a))

Rectifiers

105

Process of transferring data electronically from one place to another is called -

((a))
Data communication
((b))
Data receiving
((c))
Data processing
((d))
Data sending

Show Answer

Answer: ((a))

Data communication

106

Other than the Sun, which is the next nearest star to Earth?

((a))
Middle most star of Three stars of Orion
((b))
Sirius
((c))
Alpha Centauri
((d))
Pole star

Show Answer

Answer: ((a))

Middle most star of Three stars of Orion

107

Computer memory which allows simultaneous read and write operations is:

((a))
ROM
((b))
PROM
((c))
EEPROM
((d))
RAM

Show Answer

Answer: ((a))

ROM

108

The Red Data book which lists endangered species is maintained -

((a))
UNO
((b))
IUCN
((c))
WHO
((d))
WWF

Show Answer

Answer: ((a))

UNO

109

________ is used to measure pressure directly.

((a))
Rotameter
((b))
LVDT
((c))
Strain gauge
((d))
Bourdon tube

Show Answer

Answer: ((a))

Rotameter

110

A 4-bit binary ripple counter uses flip-flop with a propagation delay time of 25ns each. The maximum possible time required for change of state will be -

((a))
100 ns
((b))
25 ns
((c))
50 ns
((d))
75 ns

Show Answer

Answer: ((a))

100 ns

111

Digital voltmeter converts ________.

((a))
Resistance to voltage
((b))
Analog to digital signal
((c))
Current to voltage
((d))
Digital to analog signal

Show Answer

Answer: ((a))

Resistance to voltage

112

What is the time period of a monostable 555 multivibrator?

((a))
T = 3RC
((b))
T = RC
((c))
T = 1.1RC
((d))
T = 0.33RC

Show Answer

Answer: ((a))

T = 3RC

113

The parallel outputs of a counter circuit represent the:

((a))
Clock count
((b))
Clock frequency
((c))
Counter modules
((d))
Parallel data word

Show Answer

Answer: ((a))

Clock count

114

Which of the following is a secondary air pollutant?

((a))
Carbon dioxide
((b))
Ozone
((c))
Carbon monoxide
((d))
Sulphur dioxide

Show Answer

Answer: ((a))

Carbon dioxide

115

The reciprocal of resistance is -

((a))
Coulomb
((b))
Conductance
((c))
Impedance
((d))
Henry

Show Answer

Answer: ((a))

Coulomb

116

Probability density function of thermal noise is -

((a))
Poisson
((b))
Binomial
((c))
Gaussian
((d))
Bessel

Show Answer

Answer: ((a))

Poisson

117

Headquarters of Bidioversity International is located at -

((a))
Rome
((b))
Manila
((c))
Paris
((d))
Geneva

Show Answer

Answer: ((a))

Rome

118

The rotation of water sprinkler used for grass lawn as soon as the water is supplied is based on the principle of -

((a))
Newton's 3^rd law of motion
((b))
Newton's 2^nd law of motion
((c))
Newton's 1^st law of motion
((d))
Both Newton's first and second law of motion

Show Answer

Answer: ((a))

Newton's 3^rd law of motion

119

Maxwell's divergence equation for the magnetic field is given by _______.

((a))
$∇ × B=0$
((b))
$∇ .B=0$
((c))
$∇ × B= ρ$
((d))
$∇ . B= ρ$

Show Answer

Answer: ((a))

$∇ × B=0$

120

Increased pulse width in the flat top sampling leads to -

((a))
No harmful effects in reproduction
((b))
Greater aliasing errors in reproduction
((c))
Attenuation of high frequencies in reproduction
((d))
Attenuation of low frequencies in reproduction

Show Answer

Answer: ((a))

No harmful effects in reproduction

121

Which element has 10 electrons?

((a))
Na
((b))
Ne
((c))
Ar
((d))
He

Show Answer

Answer: ((a))

122

The term “Delayed AGC” implies the application of AGC -

((a))
After switching on of on-off switch
((b))
Only when signal strength has increased beyond a specified value
((c))
To the last stage of receiver
((d))
After some time lag

Show Answer

Answer: ((a))

After switching on of on-off switch

123

What is the full form of FTP?

((a))
File transfer protocol
((b))
Form transmission protocol
((c))
File transmission protocol
((d))
Form transfer protocol

Show Answer

Answer: ((a))

File transfer protocol

124

Kirchhoff's law will fail in case of -

((a))
Distributed parameter networks
((b))
Dual networks
((c))
Linear networks
((d))
Non linear networks

Show Answer

Answer: ((a))

Distributed parameter networks

125

Which of the following gases is evolved when baking soda reacts with an acetic acid?

((a))
CO₂
((b))
H₂
((c))
CH₄
((d))
O₂

Show Answer

Answer: ((a))

CO₂

126

A network has 7 nodes and 5 independent loops. What is the total number of branches in this network?

((a))
12
((b))
11
((c))
13
((d))
10

Show Answer

Answer: ((a))

127

_______ is the device which acts like an N-P-N and a P-N-P transistor connected base-to-base and emitter-to-collector.

((a))
TRIAC
((b))
SCR
((c))
UJT
((d))
DIAC

Show Answer

Answer: ((a))

TRIAC

128

Who is sometimes referred to as 'Payyoli Express'?

((a))
Shiny Abraham
((b))
Jyotirmoyee Sikdar
((c))
P.T. Usha
((d))
Anju Bobby George

Show Answer

Answer: ((a))

Shiny Abraham

129

What is a zip drive?

((a))
A medium capacity removable disk storage system
((b))
An output device
((c))
An input device
((d))
Software

Show Answer

Answer: ((a))

A medium capacity removable disk storage system

130

What is the effect of current shunt feedback in an amplifier?

((a))
Decrease the input resistance and increase the output resistance
((b))
Decrease both the input and output resistances
((c))
Increase the input resistance and decrease the output resistance
((d))
Increase both input and output resistances

Show Answer

Answer: ((a))

Decrease the input resistance and increase the output resistance

131

E-mail address is made up of -

((a))
Four parts
((b))
Three parts
((c))
Two parts
((d))
Single part

Show Answer

Answer: ((a))

Four parts

132

'World Leprosy Day' is observed on the last Sunday of -

((a))
January
((b))
March
((c))
February
((d))
April

Show Answer

Answer: ((a))

January

133

The technique of assigning a memory address to each I/O device in the computer system is called -

((a))
Ported I/O
((b))
Dedicated I/O
((c))
Memory-mapped I/O
((d))
Wired I/O

Show Answer

Answer: ((a))

Ported I/O

134

________ is the average amount of information that must be delivered in order to resolve the uncertainty about the outcome of a trial.

((a))
Bandwidth
((b))
Entropy
((c))
Quantum
((d))
Loss

Show Answer

Answer: ((a))

Bandwidth

135

In the World Bank’s Doing Business (DB) rankings for 2019, India is ranked at ______ position.

((a))
72^nd
((b))
23^rd
((c))
65^th
((d))
77^th

Show Answer

Answer: ((a))

72^nd

136

The source of energy for a satellite is -

((a))
Solar cell
((b))
Fuel cell
((c))
Magneto hydrodynamic generator
((d))
Battery

Show Answer

Answer: ((a))

Solar cell

137

Maximum data rate of a channel for a noiseless 2-kHz binary channel is -

((a))
2000 bps
((b))
1000 bps
((c))
4000 bps
((d))
3000 bps

Show Answer

Answer: ((a))

2000 bps

138

Which among the following is a valid string function?

((a))
Strcut
((b))
Strpbrk
((c))
Strcmp
((d))
Strxfrm

Show Answer

Answer: ((a))

Strcut

139

Which Mughal emperor's original name was Zahir-ud-Din Muhammad?

((a))
Humayun
((b))
Akbar
((c))
Babur
((d))
Aurangazeb

Show Answer

Answer: ((a))

Humayun

140

What are the advantages of using Electrical transducers?

((a))
Small and non-portable
((b))
Large and non-portable
((c))
Large and portable
((d))
Reduce effects of friction

Show Answer

Answer: ((a))

Small and non-portable

141

When was the first economic census conducted in India?

((a))
1958
((b))
1983
((c))
1977
((d))
1972

Show Answer

Answer: ((a))

1958

142

For which of the following calculations can superposition principle be applied?

((a))
Voltage and power
((b))
Current and power
((c))
Voltage, current and power
((d))
Voltage and current

Show Answer

Answer: ((a))

Voltage and power

143

Lion-Tailed Macaque is found in -

((a))
Western Ghats
((b))
Western Himalaya
((c))
Eastern Ghats
((d))
Caucasus

Show Answer

Answer: ((a))

Western Ghats

144

Which of the following is non-linear data structure?

((a))
Stacks
((b))
Linked list
((c))
Graph
((d))
Array

Show Answer

Answer: ((a))

Stacks

145

The unit of gravitational constant (G) is -

((a))
m²s-²kg^-1
((b))
m³s^-2kg^-1
((c))
m²s^-1kg^-1
((d))
m³s^-2kg^-3

Show Answer

Answer: ((a))

m²s-²kg^-1

146

India’s first global, Mega-Science Exhibition ‘Vigyan Samagam’ started at -

((a))
Jaipur
((b))
Ranchi
((c))
Mumbai
((d))
Chennai

Show Answer

Answer: ((a))

Jaipur

147

A network is said to be linear if and only if -

((a))
Principle of additivity applies
((b))
Principle of homogeneity applies
((c))
Both Principle of additivity and Principle of homogeneity applies
((d))
Response is proportional to the excitation function

Show Answer

Answer: ((a))

Principle of additivity applies

148

Which of the following is the safest ladder to be used while working with electrical appliances?

((a))
Aluminium
((b))
Steel
((c))
Metal ladder
((d))
Fiberglass

Show Answer

Answer: ((a))

Aluminium

149

In an E-R diagram attributes are represented by -

((a))
Ellipse
((b))
Rectangle
((c))
Triangle
((d))
Square

Show Answer

Answer: ((a))

Ellipse

150

Which material has the highest electrical conductivity?

((a))
Aluminium
((b))
Steel
((c))
Silver
((d))
Lead

Show Answer

Answer: ((a))

Aluminium

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