Held in 2019
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Take this paper as a timed mock test. Review your answers after you submit.
Read the paper at your pace. Open an explanation when you need it.
A labeled statement consists of an identifier followed by -
Equal to
Colon
Semicolon
Comma
Correct answer
Equal to
What is the device used for measuring the power in an optical signal?
Optical multi-analyte meter
Optical spectrometer
Optical power meter
Optical fiber length meter
Correct answer
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 -
1600 kHz
2100 kHz
900 kHz
750 kHz
Correct answer
1600 kHz
When the function is defined inside a class, it is called -
Inline function
Member variable
Member function
Data function
Correct answer
Inline function
Which of the following is an example of an active device?
Electric bulb
Transformer
Resistor
Transistors
Correct answer
Electric bulb
Which of the following memories can be programmed once by the user and then cannot be erased and reprogrammed?
EEPROM
ROM
Flash Memory
EPROM
Correct answer
EEPROM
In which of the following types of A/D converter does the conversion time almost double for every bit added to the device?
Counter type A/D converter
Tracking type A/D converter
Single-slope integrating type A/D converter
Successive approximation type A/D converter
Correct answer
Counter type A/D converter
________ is used for transmitting files between computers on the Internet over TCP/IP connections.
FTP
ASCII
BCD
HTTP
Correct answer
FTP
The RF signal strength at any point of the cable is measured by -
Wobbuloscope
Field strength meter
Oscilloscope
Multimeter
Correct answer
Wobbuloscope
Which of the following keyword is used to transfer control from a function back to the calling function?
Return
Goto
Go back
Switch
Correct answer
Return
Which of the following components store energy in the form of electrical charges?
Capacitors
Transformers
Resistors
Inductors
Correct answer
Capacitors
Alloy used for making permanent magnet is -
Zamak
Alnico
Silumin
Duralumin
Correct answer
Zamak
OSI stands for -
Open System Interdependence
Open Site Interconnection
Open Site Interdependence
Open System Interconnection
Correct answer
Open System Interdependence
When the peak power is 1000000 watts and the average power is 800 watts, then the duty cycle is -
0.08 percent
0.008 percent
0.8 percent
8 percent
Correct answer
0.08 percent
Which of the following is used to change "Siva" into "Ramu" in the "FirstName" column in the Students table?
UPDATE Students SET FirstName='Siva' INTO FirstName='Ramu'
MODIFY Students SET FirstName='Siva' INTO FirstName='Ramu'
MODIFY Studnets SET FirstName='Ramu' WHERE FirstName='Siva'
UPDATE Students SET FirstName='Ramu' WHERE FirstName='Siva'
Correct answer
UPDATE Students SET FirstName='Siva' INTO FirstName='Ramu'
Corrosion or rusting can be prevented by -
Electroplating process
All of the options
Painting the surface of the metal
Oiling the surface of the metal
Correct answer
Electroplating process
The number of flip-flops required in a decade counter are -
10
2
3
4
Correct answer
10
Which of the following is/are an operations performed on linked list?
Traversal
Deletion
Insertion
All of the options
Correct answer
Traversal
The range of frequency generated by VHF oscillator is -
300 MHz - 3 GHz
Above 3 GHz
30 MHz - 300 MHz
20 kHz - 30 MHz
Correct answer
300 MHz - 3 GHz
What is the built in library function to compare two strings?
string_cmp()
strcmp()
str_cm()
str_compare()
Correct answer
string_cmp()
The 8085 has two registers known as primary data pointers. These are registers
B and C
D and E
H and L
C and D
Correct answer
B and C
First In First Out (FIFO) is used in -
Stack
Linked list
Queue
Tree
Correct answer
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 -
Set, set
Set, reset
Reset, set
Reset, reset
Correct answer
Set, set
What type of keyboard is used in fast food store, restaurants and shops?
Numeric keypads
Numeric Keyboard
Concept keyboard
Concise keyboard
Correct answer
Numeric keypads
The first page that you normally view at a Website is -
First page
Front page
Home page
Master page
Correct answer
First page
A relay is used to -
Sense the fault
Control low voltage circuits with the help of high voltage signals
Control high voltage circuits with the help of low voltage signals
Break the fault current
Correct answer
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 -
Voltage multiplier
Clipper
Amplifier
Clamper
Correct answer
Voltage multiplier
What is the process of designing more than 100 gates on a single chip?
MSI
SSI
LSI
VLSI
Correct answer
MSI
A conductor is said to be perfect if it has ________ electrical conductivity.
Zero
Finite
Infinite
Unity
Correct answer
Zero
Which logic gate is similar to the function of two parallel switches?
NOR
OR
AND
NAND
Correct answer
NOR
The drift of a hole in a semiconductor is brought by -
The vacancy being filled by an ion
The vacancy being filled by a valence electron from a neighboring atoms
The vacancy being filled by a free electron
The movement of an atom in the solid
Correct answer
The vacancy being filled by an ion
Nuclear fuel in the sun is -
Alpha particles
Uranium
Hydrogen
Helium
Correct answer
Alpha particles
In case of amplifiers which coupling gives the highest gain?
Resistance coupling
Transformer coupling
Impedance coupling
Capacitance coupling
Correct answer
Resistance coupling
The number of unused states in a n-bit Johnson Counter is:
2n - 2n
2n - 1
2n - n
2n
Correct answer
2n - 2n
What kind of computer program is used to convert mnemonic code to machine code?
Debug
C++
Fortran
Assembler
Correct answer
Debug
Four terminal approach is used in measuring low resistance because it -
Eliminates stray inductance
Eliminates thermoelectric energy
Eliminates the effect of leads and currents
Eliminates stray capacitance
Correct answer
Eliminates stray inductance
A logic circuit which is used to change a BCD number into an equivalent decimal number is -
Decoder
Encoder
Multiplexer
Code converter
Correct answer
Decoder
How many digits in binary notation are required for the decimal number 17?
6
4
7
5
Correct answer
6
Which of the following in NOT a type of Internetworking?
Intranet
Extranet
Local Area Network
Internet
Correct answer
Intranet
A diode for which you can change the reverse bias, and thus vary the capacitance is called a
Varactor diode
tunnel diode
Zener diode
switching diode
Correct answer
Varactor diode
The process of removing unwanted part of an image is called -
Border
Cutting
Hiding
Cropping
Correct answer
Border
Which of the following is a correct comment in C++?
/* Comment */
*/ Comments */
{ Comment }
** Comment **
Correct answer
/* Comment */
Which of the following is NOT a boot sector virus?
Brain
Stoned
Elk cloner
Creeper
Correct answer
Brain
Stadia is a video game streaming of -
Apple
Microsoft
Atari
Correct answer
Full form of POPs is -
Persistent Organic Pesticides
Permanent Organic Pesticides
Persistent Oxidizing Pollutants
Persistent Organic Pollutants
Correct answer
Persistent Organic Pesticides
The thickness of a 50 Hz transformer lamination is -
0.5 mm
0.15 mm
3.5 mm
0.35 mm
Correct answer
0.5 mm
Narang Cup is associated with which sport?
Badminton
Football
Hockey
Basketball
Correct answer
Badminton
LAN, WAN and MAN are computer networks covering different area. Their first alphabets L, W and M respectively stand for -
Long, Wireless and Metropolitan
Local, Wide and Metropolitan
Least, Wireless and Maximum
Local, World and Middle
Correct answer
Long, Wireless and Metropolitan
Where is Kandaleru Dam located?
Goa
Maharashtra
Kerala
Andhra Pradesh
Correct answer
Goa
Which material has the highest electrical conductivity?
Steel
Silver
Aluminium
Lead
Correct answer
Steel
A high Q-quartz crystal exhibits series resonance at the frequency ωs and parallel resonance at ωp, then -
ωs is very close but less than ωp
ωs is very close, but greater than ωp
ωs >> ωp
ωs << ωp
Correct answer
ωs is very close but less than ωp
When a magnesium ribbon is burnt in air, the ash formed is-
Pink
Black
White
Yellow
Correct answer
Pink
Name the technique used to separate butter from curd.
Centrifugation
Sublimation
Evaporation
Filtration
Correct answer
Centrifugation
_______ are electronic switches that actuate when a small external voltage is applied across the terminals.
Electromechanical relays
Reed relays
Solid state relays
Latching relays
Correct answer
Electromechanical relays
A semiconductor has generally ______ valence electrons.
3
4
6
2
Correct answer
3
Name the PCB side on which the components are mounted.
Component side
Solder side
Copper side
Track side
Correct answer
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.
10.00%
7.50%
2.50%
5.00%
Correct answer
10.00%
The function of de-emphasis circuit is -
To boost HF response of audio amplifier
To maintain adequate S/N ratio
To bring back higher frequencies to their original level
To bring back lower frequencies to their original level
Correct answer
To boost HF response of audio amplifier
Which of the following is called the address operator?
%
&
_
Correct answer
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.
Rectifier
Clamper
Slicer
Limiter
Correct answer
Rectifier
In a compound such as water, the ratio of the mass of hydrogen to the mass of oxygen is always -
1 : 8
1 : 16
3 : 16
2 : 8
Correct answer
1 : 8
What is the hexadecimal equivalent of this binary number (1110)2?
F
B
A
E
Correct answer
F
The server on the Internet is also known as -
Gateway
Repeater
Host
Hub
Correct answer
Gateway
The other name for the common collector amplifier is -
Base follower
Emitter follower
Collect follower
Impedance follower
Correct answer
Base follower
Resting potential of neuron is -
+0.1 mV
-70 mV
-210 mV
+20 mV
Correct answer
+0.1 mV
Who among the following was the President of the Constituent Assembly of India?
C. Rajagopalachari
Dr. B.R. Ambedkar
Dr. Rajendra Prasad
Jawaharlal Nehru
Correct answer
C. Rajagopalachari
1 dB corresponds to ______ change in power level.
35%
26%
50%
14%
Correct answer
35%
________ is a device that is used to connect multiple networks and passes packets from one network to the other network.
Hub
Gateway
Proxy Server
Switch
Correct answer
Hub
Three resistors each of 3 Ω are connected in parallel; the equivalent resistance is
1 Ω
6 Ω
9 Ω
1/3 Ω
Correct answer
1 Ω
Montreal protocol refers to -
Substances that deplete ozone layer
Biosafety of genetically modified organisms
Global warming and climate change
Persistent organic fertilizers
Correct answer
Substances that deplete ozone layer
If two capacitors of 4 pF each are connected in series, their total capacitance is -
2 pF
4 pF
16 pF
8 pF
Correct answer
2 pF
Which of the following is the latest version of Android?
Android Oreo
Android Pie
Android Nougat
Android Kitkat
Correct answer
Android Oreo
Molarity is -
The number of moles of a solute present in one litre of the solvent
The number of moles of a solute present in one kilogram of the solution
The number of moles of a solute present in one kilogram of the solvent
The number of moles of a solute present in one litre of the solution
Correct answer
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 -
7498
7494
74194
7495
Correct answer
7498
Which symbol is used as a statement terminator in C?
!
%
;
Correct answer
!
Heating effect of electric current is used in -
Both fan and television
Television
Fan
Electric bulb
Correct answer
Both fan and television
Select the most environment friendly method of insect control from the following:
Crop rotation and intercropping
Application of Chlorinated hydrocarbons
Application of Organophosphates
Application of pyrethroids
Correct answer
Crop rotation and intercropping
The envelope detector is a/an -
Product demodulator
Coherent detector
Synchronous detector
Asynchronous detector
Correct answer
Product demodulator
Transformer coupling is not used in audio frequency amplifiers, because -
The cost of transformer is high
The transformers are bulky
All of the options
It introduces frequency distortion
Correct answer
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?
8000
6000
5000
7000
Correct answer
8000
Which of the following is NOT a semiconductor?
Wood
Selenium
Germanium
Silicon
Correct answer
Wood
Dielectric strength is expressed in _______ per unit thickness of the insulating material.
Volts
Watts
Ohms
Amperes
Correct answer
Volts
Gunn diode is made of -
Gallium Arsenide
Germanium
Silicon
Selenium
Correct answer
Gallium Arsenide
Which of the following is NOT an halogen?
Iodine
Tellurium
Fluorine
Astatine
Correct answer
Iodine
In an electrical circuit, fuse is blown and the circuit is cut-off due to -
Low voltage
Excessive current
High inductance
Excessive voltage
Correct answer
Low voltage
Which of the following antennas is the standard reference antenna for the directiveness?
Half wave doublet
Isotropic antenna
Rhombic antenna
Elementary doublet
Correct answer
Half wave doublet
What is the full form of ISDN with respect to Communication Engineering?
Inter Subscriber Digital Network
Inter Services Digital Network
Integrated Services Digital Network
Integrated Subscriber Digital Network
Correct answer
Inter Subscriber Digital Network
The RMS value and mean value is the same in the case of:
Sine wave
Half wave rectified sine wave
Triangular wave
Symmetrical Square wave
Correct answer
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-
Program counter
Accumulator
Stack pointer
Instruction pointer
Correct answer
Program counter
Which of the following function is used to find the last occurrence of a character in a string?
strstr()
strnset()
strrchr()
laststr()
Correct answer
strstr()
What is the ripple factor of full-wave bridge rectifier?
1.321
0.482
1.212
1.414
Correct answer
1.321
Which isotope is used in the treatment of Goitre?
Uranium
Iodine
Cobalt
Chlorine
Correct answer
Uranium
Applets are written in _______ programming language.
C
Java
C#
C++
Correct answer
C
When was the National Green Tribunal (NGT) established?
2006
2005
2000
2010
Correct answer
2006
A half wave rectifier requires -
One diode
Metal rectifier in bridge formation
Four diodes in a bridge formation
Two diodes
Correct answer
One diode
The power of a concave lens is -0.5 D. What is its focal length?
4 m
-2 m
-3 m
-4 m
Correct answer
4 m
What is the value range for the standard integer type 'int'?
-32768 to +32767
0 to 256
No specific range
-65536 to +65536
Correct answer
-32768 to +32767
Which of the following concepts is used by ultra sound scanners to find abnormalities in internal organs of human beings?
Ultrasonic waves are converted to sound waves by defects in organs
Ultra sonic waves produce harmful effects when defects are found
Ultrasonic waves are sent through the tissues of the body, and it gets reflected
Ultrasonic waves pass throughout the body without reflecting
Correct answer
Ultrasonic waves are converted to sound waves by defects in organs
Which state has the longest coastline in India?
Gujarat
Tamil Nadu
Andhra Pradesh
Karnataka
Correct answer
Gujarat
The radix/base of octal number system is -
4
8
2
10
Correct answer
4
Sonal Mansingh is an Indian -
Western singer
Classical singer
Western dancer
Classical dancer
Correct answer
Western singer
Who among the following founded the Banaras Hindu University?
Madan Mohan Malaviya
Gopala Krishna Gokhale
Lala Lajpat Rai
Jawahar Lal Nehru
Correct answer
Madan Mohan Malaviya
A double beam oscilloscope has
Two screens
Two electron guns
Two different phosphor coatings
One waveform divided into two parts
Correct answer
Two screens
Which of the following components convert fixed DC to variable DC?
Rectifiers
Choppers
Cycloconverters
Inverters
Correct answer
Rectifiers
Process of transferring data electronically from one place to another is called -
Data communication
Data receiving
Data processing
Data sending
Correct answer
Data communication
Other than the Sun, which is the next nearest star to Earth?
Middle most star of Three stars of Orion
Sirius
Alpha Centauri
Pole star
Correct answer
Middle most star of Three stars of Orion
Computer memory which allows simultaneous read and write operations is:
ROM
PROM
EEPROM
RAM
Correct answer
ROM
The Red Data book which lists endangered species is maintained -
UNO
IUCN
WHO
WWF
Correct answer
UNO
________ is used to measure pressure directly.
Rotameter
LVDT
Strain gauge
Bourdon tube
Correct answer
Rotameter
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 -
100 ns
25 ns
50 ns
75 ns
Correct answer
100 ns
Digital voltmeter converts ________.
Resistance to voltage
Analog to digital signal
Current to voltage
Digital to analog signal
Correct answer
Resistance to voltage
What is the time period of a monostable 555 multivibrator?
T = 3RC
T = RC
T = 1.1RC
T = 0.33RC
Correct answer
T = 3RC
The parallel outputs of a counter circuit represent the:
Clock count
Clock frequency
Counter modules
Parallel data word
Correct answer
Clock count
Which of the following is a secondary air pollutant?
Carbon dioxide
Ozone
Carbon monoxide
Sulphur dioxide
Correct answer
Carbon dioxide
The reciprocal of resistance is -
Coulomb
Conductance
Impedance
Henry
Correct answer
Coulomb
Probability density function of thermal noise is -
Poisson
Binomial
Gaussian
Bessel
Correct answer
Poisson
Headquarters of Bidioversity International is located at -
Rome
Manila
Paris
Geneva
Correct answer
Rome
The rotation of water sprinkler used for grass lawn as soon as the water is supplied is based on the principle of -
Newton's 3rd law of motion
Newton's 2nd law of motion
Newton's 1st law of motion
Both Newton's first and second law of motion
Correct answer
Newton's 3rd law of motion
Maxwell's divergence equation for the magnetic field is given by _______.
\(∇ × B=0\)
\(∇ .B=0\)
\(∇ × B= ρ\)
\(∇ . B= ρ\)
Correct answer
\(∇ × B=0\)
Increased pulse width in the flat top sampling leads to -
No harmful effects in reproduction
Greater aliasing errors in reproduction
Attenuation of high frequencies in reproduction
Attenuation of low frequencies in reproduction
Correct answer
No harmful effects in reproduction
Which element has 10 electrons?
Na
Ne
Ar
He
Correct answer
Na
The term “Delayed AGC” implies the application of AGC -
After switching on of on-off switch
Only when signal strength has increased beyond a specified value
To the last stage of receiver
After some time lag
Correct answer
After switching on of on-off switch
What is the full form of FTP?
File transfer protocol
Form transmission protocol
File transmission protocol
Form transfer protocol
Correct answer
File transfer protocol
Kirchhoff's law will fail in case of -
Distributed parameter networks
Dual networks
Linear networks
Non linear networks
Correct answer
Distributed parameter networks
Which of the following gases is evolved when baking soda reacts with an acetic acid?
CO2
H2
CH4
O2
Correct answer
CO2
A network has 7 nodes and 5 independent loops. What is the total number of branches in this network?
12
11
13
10
Correct answer
12
_______ is the device which acts like an N-P-N and a P-N-P transistor connected base-to-base and emitter-to-collector.
TRIAC
SCR
UJT
DIAC
Correct answer
TRIAC
Who is sometimes referred to as 'Payyoli Express'?
Shiny Abraham
Jyotirmoyee Sikdar
P.T. Usha
Anju Bobby George
Correct answer
Shiny Abraham
What is a zip drive?
A medium capacity removable disk storage system
An output device
An input device
Software
Correct answer
A medium capacity removable disk storage system
What is the effect of current shunt feedback in an amplifier?
Decrease the input resistance and increase the output resistance
Decrease both the input and output resistances
Increase the input resistance and decrease the output resistance
Increase both input and output resistances
Correct answer
Decrease the input resistance and increase the output resistance
E-mail address is made up of -
Four parts
Three parts
Two parts
Single part
Correct answer
Four parts
'World Leprosy Day' is observed on the last Sunday of -
January
March
February
April
Correct answer
January
The technique of assigning a memory address to each I/O device in the computer system is called -
Ported I/O
Dedicated I/O
Memory-mapped I/O
Wired I/O
Correct answer
Ported I/O
________ is the average amount of information that must be delivered in order to resolve the uncertainty about the outcome of a trial.
Bandwidth
Entropy
Quantum
Loss
Correct answer
Bandwidth
In the World Bank’s Doing Business (DB) rankings for 2019, India is ranked at ______ position.
72nd
23rd
65th
77th
Correct answer
72nd
The source of energy for a satellite is -
Solar cell
Fuel cell
Magneto hydrodynamic generator
Battery
Correct answer
Solar cell
Maximum data rate of a channel for a noiseless 2-kHz binary channel is -
2000 bps
1000 bps
4000 bps
3000 bps
Correct answer
2000 bps
Which among the following is a valid string function?
Strcut
Strpbrk
Strcmp
Strxfrm
Correct answer
Strcut
Which Mughal emperor's original name was Zahir-ud-Din Muhammad?
Humayun
Akbar
Babur
Aurangazeb
Correct answer
Humayun
What are the advantages of using Electrical transducers?
Small and non-portable
Large and non-portable
Large and portable
Reduce effects of friction
Correct answer
Small and non-portable
When was the first economic census conducted in India?
1958
1983
1977
1972
Correct answer
1958
For which of the following calculations can superposition principle be applied?
Voltage and power
Current and power
Voltage, current and power
Voltage and current
Correct answer
Voltage and power
Lion-Tailed Macaque is found in -
Western Ghats
Western Himalaya
Eastern Ghats
Caucasus
Correct answer
Western Ghats
Which of the following is non-linear data structure?
Stacks
Linked list
Graph
Array
Correct answer
Stacks
The unit of gravitational constant (G) is -
m2s-2kg-1
m3s-2kg-1
m2s-1kg-1
m3s-2kg-3
Correct answer
m2s-2kg-1
India’s first global, Mega-Science Exhibition ‘Vigyan Samagam’ started at -
Jaipur
Ranchi
Mumbai
Chennai
Correct answer
Jaipur
A network is said to be linear if and only if -
Principle of additivity applies
Principle of homogeneity applies
Both Principle of additivity and Principle of homogeneity applies
Response is proportional to the excitation function
Correct answer
Principle of additivity applies
Which of the following is the safest ladder to be used while working with electrical appliances?
Aluminium
Steel
Metal ladder
Fiberglass
Correct answer
Aluminium
In an E-R diagram attributes are represented by -
Ellipse
Rectangle
Triangle
Square
Correct answer
Ellipse
150 questions in the full paper