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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.
Two resistors, one of 10 Ω and the other of 15 Ω, are connected in parallel. This combination is connected in series with a 24 Ω resistor and a 12 V battery. The current in the 15 Ω resistor is:
0.40 A
0.24 A
0.12 A
0.16 A
Correct answer
0.40 A
Which type of pencil has the hardest graphite lead?
3H
2H
9H
HB
Correct answer
3H
The weight of an object on the Earth is 150 N. Its weight on moon will be:
75 N
50 N
150 N
25 N
Correct answer
75 N
A ‘compass’ is used to draw:
Circle
Rectangle
Triangle
Straight line
Correct answer
Circle
An object is accelerating at 5 m/s2 from its rest position. The velocity of this object after 5 s is:
15 m/s
20 m/s
5 m/s
25 m/s
Correct answer
15 m/s
The work to be done to increase the speed of a 0.5 kg ball from 4 m/s to 8 m/s is:
8 J
12 J
16 J
4 J
Correct answer
8 J
Which of these is NOT a type of string musical instrument?
Bass
Violin
Tuba
Cello
Correct answer
Bass
A/An _______ is the software that manages all of a computer’s processes and allows programs and applications to run.
spam
malware
modem
operating system
Correct answer
spam
A cylindrical wire of length L and radius r has a resistance R. The resistance of another wire of the same material but of half its length and twice its radius is given by:
R
R/2
R/4
R/8
Correct answer
R
Two resistors, each of 20 ohms, are connected in parallel and this combination is connected across a 40 V supply voltage.
Find the resistance in the circuit.
40 ohm
10 ohm
25 ohm
20 ohm
Correct answer
40 ohm
Our electricity bills carry the energy consumption, expressed in units of _______.
KVA
kW
kWh
KJ
Correct answer
KVA
A component that adds to a software program’s functionality is called as ______
Plug-in
Processor
Modem
Server
Correct answer
Plug-in
A block of wood floats in water with 30% of its volume above water (density 103 kg/m3). The density of wood (in kg/m3) is:
6 × 103
5 × 102
7 × 102
3 × 102
Correct answer
6 × 103
Bio-gas is an excellent fuel as it contains up to ______% methane.
85
70
50
80
Correct answer
85
Who was appointed as the Chief Justice of India on 03.10.2018?
Mr. N.V. Ramana
Mr. Ranjan Gogoi
Mr. Kurian Joseph
Mr. Arjan Kumar Sikri
Correct answer
Mr. N.V. Ramana
The thanksgiving festival of Pongal is primarily celebrated in which state of India?
Tamilnadu
Rajasthan
Maharashtra
Uttar Pradesh
Correct answer
Tamilnadu
What is the power dissipated in a 5-ohm resistor carrying 2 A current?
10 W
0.6 W
2.5 W
20 W
Correct answer
10 W
Which of these is NOT a novel written by Premchand?
Godaan
Gaban
Nirmala
Deepshikha
Correct answer
Godaan
The idea of a Constituent Assembly was given by:
Dr. Rajendra Prasad
Maulana Abul Kalam Azad
M.N Roy
B.R. Ambedkar
Correct answer
Dr. Rajendra Prasad
A ball of 200 g is thrown vertically upward with a speed of 20 m/s. The momentum of the ball at the highest point of its path is (take g = 10 m/s2):
200 kgm/s
100 kgm/s
40 kgm/s
0
Correct answer
200 kgm/s
Increasing the pressure on an object ______ the volume of the object and therefore ______ its density.
increases, increases
increases, decreases
decreases, increases
decreases, decreases
Correct answer
increases, increases
The construction of the “Sanchi Stupa” was commissioned by which Mauryan Emperor?
Chandragupta Maurya
Bindusara
Ashoka
Kautilya
Correct answer
Chandragupta Maurya
If we double the length of a copper wire keeping the cross-sectional area constant, its resistance increases by _______ times.
Four
One
Three
Two
Correct answer
Four
Identify the insulator from the below having high resistivity.
Glass
Diamond
Hard rubber
Dry paper
Correct answer
Glass
Which of the following organisations prepares a Red List of Threatened Species?
RPPO
OIE
WWF
IUCN
Correct answer
RPPO
A source of voltage V maintains a current I in a circuit. The power (P) input to the circuit by the source is given by:
P = V I
P = V/I
P = I/V
P = 1/(V I)
Correct answer
P = V I
The Celsius temperature (tC) and the Fahrenheit temperature (tF) are related as:
tF = (5/9) tC + 32
tF = (9/5) tC
tF = (9/5) tC + 32
tF = (5/9) tC
Correct answer
tF = (5/9) tC + 32
Who invented the World Wide Web?
Tim Berner-Lee
Robert E. Kahn
Vint Cerf
Antonio Meucci
Correct answer
Tim Berner-Lee
A boy weighing 50 kg runs up a staircase of 40 steps, each of 16 height cm, in 10 s. Calculate his power. (Take g = 10 m/s2)
480 W
320 W
120 W
80 W
Correct answer
480 W
Laho dance belongs to the state of _________ in India.
Meghalaya
Rajasthan
Orissa
Andhra Pradesh
Correct answer
Meghalaya
Which country did India beat to win the Under19 Cricket Asia Cup 2018?
Sri Lanka
Afghanistan
Pakistan
Bangladesh
Correct answer
Sri Lanka
Which of the following quantities does not have dimensions?
Frequency
Volume
Relative permeability
Force
Correct answer
Frequency
The sum of the present ages of a father and a son is 45 year. 5 year ago, the ratio of their ages was 6 : 1. Find the current age of the father.
40 year
30 year
25 year
35 year
Correct answer
40 year
Find the odd word from the given alternatives
Carom board
Wheel
Coin
Hula hoop
Correct answer
Carom board
Find the odd set of letter from the given alternatives.
JLN
MNO
RTV
CEG
Correct answer
JLN
In the question, two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if they seem to be at variance with commonly known facts. You have to decide which of the given conclusions, if any, follow(s) from the given statements.
Statement 1: All stones are cyclones
Statement 2: All cyclones are tornadoes
Conclusion I: Some tornadoes are stones
Conclusion II: Some cyclones are stones
Only conclusion II follows
Only conclusion I follows
Neither I nor II follows
Both I and II follow
Correct answer
Only conclusion II follows
What is the minimum number of lines required to make the given image?
11
10
9
12
Correct answer
11
A statement/group of statements is given followed by some conclusion. Choose the conclusion that logically follows from the given statements.
Statement: All hardworking worker in the factory have been promoted in the last five year:
Some worker who were promoted in the last five year are hardworking
There are no worker in the factory who are not hardworking
Hardworking is the only criteria for promotion
After promotion, some worker stopped working hard
Correct answer
Some worker who were promoted in the last five year are hardworking
Two cows G and H are grazing in a field. They start from the same point. G moves 1.5 km South, then turns East and moves 2.5 km, then turns to its right and moves 3.5 km. Meanwhile H has moved 2.5 km East. Where is H with respect to G.
H is 2 km South of G
H is 5 km North of G
H is 5 km South of G
H is 2 km North of G
Correct answer
H is 2 km South of G
A jogger jogs 1 km East, then turn North and jogs 4 km, then turns West and jogs 6 km, then turns to his left and jogs 4 km. Where is he now with reference to his starting position?
5 km West
7 km West
7 km East
5 km East
Correct answer
5 km West
Choose the figure that is different from the rest.
Correct answer
If G + H means G is daughter of H; G - H means G is father-in-law of H; and G * H means G is husband of H; then which of the following shows that O is the sister L?
O * N - M + L
O - N * M + L
O + M - N * L
O - N + M * L
Correct answer
O * N - M + L
A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
7.4, 8.7, 10.0, 11.3, ?, 13.9
11.9
12.3
11.7
12.6
Correct answer
11.9
Which two signs should be interchanged to correct the given equation?
15 ÷ 3 + 2 × 10 - 6 = 14
÷ and -
÷ and +
Correct answer
÷ and -
Select the word that is related to the third word in the same way as the second word is related to the first word.
Walnut : shell : : Banana : ?
Peel
Green
Fruit
Ripe
Correct answer
Peel
A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
TTTTTTO, TTTTTOT, TTTTOTT, TTTOTTT
TTTOTTTT
TTTOTTTO
TTOTTT
TTOTTTT
Correct answer
TTTOTTTT
What was the day of the week on January 26, 1989?
Tuesday
Thursday
Sunday
Monday
Correct answer
Tuesday
Read the question below followed by two statements. Study them and decide which statement(s) is/are sufficient to answer the question.
Question: What was the revenue of the zoo on a certain day?
Statements:
I) 120 person visited the zoo on that certain day.
II) A discount of 25% on ticket price was offered on that certain day.
Neither statement I nor II is sufficient
Statement I alone is sufficient while II alone is not sufficient
Statement II alone is sufficient while I alone is not sufficient
Either statement I or II is sufficient
Correct answer
Neither statement I nor II is sufficient
Which of the following Venn diagrams best represents the relationship between women, mother, and doctor?
Correct answer
In the question, two statements are given, followed by three conclusions, I, II and III. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow(s) from the given statements.
Statement 1: All bamboo are tall.
Statement 2: All tall are grass.
Conclusion I: Some grass are bamboo.
Conclusion II: Some tall are bamboo.
Conclusion III: Some grass are tall.
All conclusions I, II and III follow
Only conclusions I and III follow
Only conclusions II and III follow
Only conclusions I and II follow
Correct answer
All conclusions I, II and III follow
If C% D means C is the wife of D; C & D means C is the father of D; and If C $ D means C is the daughter of D, then what would X $ Y % W & Z mean if W has only one daughter?
X is the son of Z
Z is the sister of X
Z is the sister of the mother of X
X is the sister of Z
Correct answer
X is the son of Z
In a certain code language, 512 means ‘steel makes tower’, 175 means ‘brick makes tower’, and 327 means ‘brick and steel’. Find the code for ‘and’.
3
1
2
7
Correct answer
3
In the following figure, square represents Asians, triangle represents writers, circle represents fathers and rectangle represents actors. Which set of letters represents actors who are writers?
GD
GF
CEG
HGF
Correct answer
GD
M, N, O and P are sitting around a round table? M does not want to sit next to P. N is to the right of P. Which statement of the below is false?
O is to the right of P
M is facing P
M is to the right of N
O is facing N
Correct answer
O is to the right of P
Given below is a statement followed by two assumptions numbered I and II. You have to decide which of the assumptions is/are implicit in the statement.
Statement: College students should work during summer holidays to improve their chances of getting a job.
Assumption I: Not all college students want a job.
Assumption II: There are enough summer jobs for most college students.
Both I and II are implicit
Only assumption I is implicit
Neither I nor II is implicit
Only assumption II is implicit
Correct answer
Both I and II are implicit
In a certain code language, ‘+’ represents ‘×’, ‘-‘ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘-‘, calculate the answer of the following equation.
8 + 3 × 4 - 2 = ?
12
6
10
8
Correct answer
12
In a certain code language, if STUDIO is coded as QRSBGM, then how will RAW be coded in that language?
PYU
WXR
UKN
TGB
Correct answer
PYU
Select the number that is related to the third number in the same way as the second number is related to the first number
2/5 : 0.4 : : 1/200 : ?
0.005
0.05
0.2
0.002
Correct answer
0.005
Choose the figure that is different from the rest.
Correct answer
The length and breadth of a rectangle is 6 cms and 8 cms respectively. Then what will be the area of a square whose side is equal to the length of the diagonal of this rectangle.
100 cm2
92 cm2
96 cm2
196 cm2
Correct answer
100 cm2
The resulting value of 0.5 ÷ 12.5 + 0.25 × 0.05 – 0.0125 is:
0.04
0.5
0.4
0.05
Correct answer
0.04
10% of 1000% of 100 = ?
110
100
102
105
Correct answer
110
What is the square root of 0.000225?
0.0125
0.0015
0.005
0.015
Correct answer
0.0125
An article was marked for Rs. 1000. Had a discount of 16% was offered, a profit of 5% would have been made. What is the cost price of the article?
Rs. 750
Rs. 800
Rs. 880
Rs. 840
Correct answer
Rs. 750
Two trains start moving towards each other when they are 2000 meter apart. First train travels at the speed of 20 m/s and the other one at 30 m/s. After how many seconds do they meet?
45
40
35
50
Correct answer
45
What is the digit that will come at the unit’s place in the result of (423)423 × (1237)28 ?
9
7
1
3
Correct answer
9
Pipes P and Q fill a cistern in 12 minutes when operated together, Q and R fill it in 20 minutes when operated together and P and R fill it in 15 minutes when operated together. In how many minutes can all 3 pipes fill the cistern if operated together?
10 minutes
2 minutes
4 minutes
3 minutes
Correct answer
10 minutes
Pipes A and pipe B can fill a tank at rate of 30 m3/hr and 40 m3/hr respectively. Together they fill the tank in 4 hours. Find the volume of the tank.
180 m3
280 m3
360 m3
200 m3
Correct answer
180 m3
If a person goes from his house to office walking at 80% of his usual speed, then he is late by 18 minutes to reach the office. What is the usual time taken by him to cover that same distance with his usual speed?
78 minutes
72 minutes
75 minutes
70 minutes
Correct answer
78 minutes
X jogs a total of 7.5 km in a day. He jogged 25/6 km in the morning. How much did he jog in the Evening?
5/3 Km
8/3 Km
11/3 Km
10/3 Km
Correct answer
5/3 Km
What will be the distance covered by a bus moving with a speed of 72 km/h in 5 seconds?
50 m
200 m
100 m
400 m
Correct answer
50 m
What will be A’s share of profit if the total profit is Rupees 1000 and is to be divided amongst A, B and C in the ratio 3 : 2 : 5?
Rs. 250
Rs. 300
Rs. 500
Rs. 200
Correct answer
Rs. 250
An object travels distance of first 30 m in 5 s and the next distance of 30 m in 3 s. The average speed of the object is:
6.5 m/s
9.0 m/s
4.5 m/s
7.5 m/s
Correct answer
6.5 m/s
At what price should a computer be sold so as to get a profit of 25% when its cost price is Rs. 18000?
Rs. 20500
Rs. 21000
Rs. 23000
Rs. 22500
Correct answer
Rs. 20500
A sum of Rs. 10000 was deposited in a bank that offer 20% annual compound interest. What will the amount be in the bank after 2 year?
Rs. 12000
Rs. 8000
Rs. 14400
Rs. 13600
Correct answer
Rs. 12000
What is the HCF of 275 and 308?
17
19
15
11
Correct answer
17
What is the side of a cube if the total surface area is 96 sq. cm?
3 cm
5 cm
4 cm
2 cm
Correct answer
3 cm
The sum of a number and 16 times its reciprocal is 10. The number is:
5
6
8
7
Correct answer
5
A sum of money invested at a compound interest amounts to 800 in 2 year and 840 in 3 year. The rate of interest is:
5%
7%
6%
4%
Correct answer
5%
The number 800 is divided in 2 parts such that one part is 9/7 times the other. The larger part is:
480
500
450
510
Correct answer
480
What is the distance between the points (-2, 4) and (4, 4)?
8 units
4 units
2 units
6 units
Correct answer
8 units
The least number consisting of five digits and that is divisible by 97 is x. What is the sum of digits of x?
15
13
16
17
Correct answer
15
ΔDEF is similar to ΔPQR. If the ratio of semi-perimeter of ΔDEF and ΔPQR is 4 : 5 and if PQ = 15cm, then the length of DE is:
12 cm
10 cm
20 cm
8 cm
Correct answer
12 cm
The median of 2, 9, 11, 7, 3, 4, 8, 5, 3, 6 is:
3.5
5
5.5
4
Correct answer
3.5
An object starts from rest at x = 0 m and t = 0 s. It moves with a constant acceleration of 3 m/s2 along x axis. What is its average velocity between time duration of 2 s and 4 s?
3 m/s
6 m/s
9 m/s
12 m/s
Correct answer
3 m/s
Where is the "title block" usually made?
on the upper right hand corner of the drawing sheet
lower right corner of the drawing sheet
on the upper left corner of the drawing sheet
center on the drawing sheet
Correct answer
on the upper right hand corner of the drawing sheet
In the first angle projection:
Object lies between observer and plane of projection
Object lies in the third quadrant
The plane of the projection lies between the object and the observer
Object lies in the fourth quadrant
Correct answer
Object lies between observer and plane of projection
A black surface absorbs ________ as compared to a white surface, under identical conditions.
same heat
negligible heat
more heat
lesser heat
Correct answer
same heat
Identify the metal having the lowest thermal conductivity.
Copper
Mercury
Aluminium
Silver
Correct answer
Copper
Identify the material, having high thermal conductivity.
Wood
Water
Ice
Insulating brick
Correct answer
Wood
In a Class 2 lever, effort and load move in the:
same direction
the movement depends on the load
opposite direction
perpendicular direction
Correct answer
same direction
How much heat should be transferred to the 100 g of an edible oil to raise its temperature by 20°C? (Specific heat of oil 1965 Jkg−1K−1)
4.31 kJ
2.70 kJ
1.32 kJ
3.93 kJ
Correct answer
4.31 kJ
If we compare the effort arm length with the load arm length in a Class 2 lever, _______.
effort arm length is always = load arm length
effort arm length can be greater than, equal to or less than the length of the load arm
effort arm length is always > load arm length
effort arm length is always < load arm length
Correct answer
effort arm length is always = load arm length
A pair of plier and scissor are together considered as a _______ Class 1 lever.
triple
single
double
simple
Correct answer
triple
If we compare the effort arm length with the load arm length in a class 1 lever, ________
effort arm length is always < load arm length
effort arm length is always = load arm length
effort arm length is always > load arm length
effort arm length can be greater than, equal to or less than the length of the load arm
Correct answer
effort arm length is always < load arm length
Standing up and supporting the lower back with hands, then gently arching back and holding this posture for some time is called as:
Finger fan
Back arching
Wrist stretch
Pectoral stretch
Correct answer
Finger fan
A sheet of styrofoam of thickness 2 cm and area 0.1 m2 has a temperature difference of 30°C between its inner and outer surfaces. Considering thermal conductivity as 0.01 J/s m K, the rate of heat flow through the sheet is:
3.0 J/s
2.0 J/s
1.0 J/s
1.5 J/s
Correct answer
3.0 J/s
The view of an object produced on a vertical plane is referred to as:
Right hand side view
Top view
Front view
Left hand side view
Correct answer
Right hand side view
The specific heat capacity of a substance is defined by:
m(ΔQ/ΔT)
m(ΔT/ΔQ)
(1/m)(ΔQ/ΔT)
(1/m)(ΔT/ΔQ)
Correct answer
m(ΔQ/ΔT)
In the context of cables, FRC stands for:
Full Rolling Cable
Fat Ribbon Cable
Fast Reeling Cable
Flat Ribbon Cable
Correct answer
Full Rolling Cable
What is the use of an RTD?
Measuring temperature
Measuring pressure
Measuring humidity
Measuring position
Correct answer
Measuring temperature
Which of the following shows the proper biasing of a PNP transistor?
base and emitter - forward bias; collector and emitter - reverse bias
base and emitter - forward bias; collector and emitter - forward bias
base and emitter - reverse bias; collector and emitter - forward bias
base and emitter - reverse bias; collector and emitter - reverse bias
Correct answer
base and emitter - forward bias; collector and emitter - reverse bias
In an op-amp, the input impedance is _______ and the output impedance is _______.
high; high
low; low
low; high
high; low
Correct answer
high; high
In an amplifier with a positive feedback circuit, gain:
Decreases
remains constant
Increases
first increases and then decreases
Correct answer
Decreases
A full-wave bridge rectifier consists of:
one diode
two diodes
three diodes
four diodes
Correct answer
one diode
A circuit that changes a code into a set of signals is called
Encoder
multiplexer
Decoder
Selector
Correct answer
Encoder
The output impedance of a MOSFET is:
Medium impedance
Low impedance
Extreme high impedance
High impedance
Correct answer
Medium impedance
The waveform in a DSO is stored in _______ form.
Digital
Expanded
Analog
Mixed
Correct answer
Digital
Which of the following devices requires a battery?
Step-up chopper
stabilizer
Step-down chopper
UPS
Correct answer
Step-up chopper
10 cells each with an EMF of 1.5 V and an internal resistance of 0.1 Ω are connected in series. What will be the total EMF and resistance of the circuit?
3.21 V and 1.5 Ω
1.18 V and 1.5 Ω
4.15 V and 2.0 Ω
15 V and 1.0 Ω
Correct answer
3.21 V and 1.5 Ω
For which of the following gates the output is zero when one or more inputs are zero?
OR
NOR
NOT
AND
Correct answer
OR
Fibre cables used for 'Fibre to Home' installations are _______.
multimode graded
multimode step
multiaxis
single mode
Correct answer
multimode graded
Which of the following circuit has its output dependent only upon the present input?
Analog Circuits
Flip Flops
Combinational Circuits
Sequential Circuits
Correct answer
Analog Circuits
Which of the following is a function of an inductor?
It opposes the flow of AC
It allows the flow of current.
It opposes the flow of DC.
It opposes the flow of both AC and DC.
Correct answer
It opposes the flow of AC
In MS Excel, we cannot calculate:
division solutions
integration solutions
arithmetic solutions
multiplication solutions
Correct answer
division solutions
78xx series ICs are:
zener regulated
series regulated
shunt regulated
series and shunt regulated
Correct answer
zener regulated
Eddy current proximity sensors can detect _______.
cotton
metal
wood
ерохy
Correct answer
cotton
CRO stands for:
Cathode Relay Oscilloscope
Cathode Ray Oscilloscope
Cathode Rectifier Oscilloscope
Cathode register oscilloscope
Correct answer
Cathode Relay Oscilloscope
An IC with four NOR gates is:
7486
7404
7432
7402
Correct answer
7486
Impedance can be measured by using which of the following equipment?
CRO
LCR meter
Function generator
DSO
Correct answer
CRO
Race Around condition can be avoided in Digital logic circuits using?
Shift Register
Master Slave JK Flip Flop
Full Adder
AND Gate
Correct answer
Shift Register
Windows 10 is a/an:
booting system
operating and booting system
operating system
counting pulse
Correct answer
booting system
In a bipolar transistor, alpha is the ratio of:
collector current to emitter current
emitter current to collector current
base current to collector current
collector current to base current
Correct answer
collector current to emitter current
In two-stage RC coupling, the function of a Cc capacitor is:
to allow AC and DC to pass
to block AC and DC
to block DC voltage
to block AC input signal
Correct answer
to allow AC and DC to pass
A _______ can be represented as two port linear network.
common base
common collector
common emitter
hybrid parameter
Correct answer
common base
A capacitor consists of ________ metal plates separated by an insulator.
Three
Two
four
one
Correct answer
Three
What is the frequency band of shortwave radio transmission?
1.7 to 30 GHz
1.7 to 30 MHz
1.7 to 30 kHz
1.7 to 30 Hz
Correct answer
1.7 to 30 GHz
What will be the power required by a bulb load having a resistance of 50 Ω if the voltage applied is 220 V?
828 W
1068 W
968 W
200 W
Correct answer
828 W
Which of the following is an application of transformers?
AC to AC conversion with isolation
Regulate DC voltage
DC to AC conversion
AC to DC conversion
Correct answer
AC to AC conversion with isolation
If current = 1.414 A and resistance = 50 Ω, then find power.
400 Watts
100 Watts
300 Watts
200 Watts
Correct answer
400 Watts
Input ripple of SMPS is ________.
high
nil
very low
low
Correct answer
high
What is the number of cycles completed by a 50-Hz line in 10 seconds?
5000
5
500
50
Correct answer
5000
UJT is not used for:
timing circuits
phase control
triggering an SCR/TRIAC
amplification
Correct answer
timing circuits
The output of Schmitt trigger is:
Sine wave
Square wave
Random wave
Rectangle wave
Correct answer
Sine wave
Which component of a digital panel meter converts analogue signals into a digital format?
ADC
comparator
magnetic field sensor
hall sensor
Correct answer
ADC
Heat sink of a power transistor can be used for:
additional heat observation
additional heat dissipation
additional heat dissolution in water
increasing the heat
Correct answer
additional heat observation
Transformer losses are due to:
core and copper losses
primary loss
only core losses
only copper losses
Correct answer
core and copper losses
Which of the following is a function of a resistor?
It both allows and opposes the flow of current.
It opposes the flow of current.
It allows the flow of current.
It neither allows nor opposes the flow of current.
Correct answer
It both allows and opposes the flow of current.
Which of the following is used as a receiver for fibre optic communication?
LED
IR diode
Photo diode
LDR
Correct answer
LED
In 8051 microcontroller the resultant of two numbers added is ________.
Erased
not stored anywhere
stored in the accumulator
stored in the register
Correct answer
Erased
The following short name is also called as ________ for diode alternating current.
DIAC
SCR
FET
TRIAC
Correct answer
DIAC
The binary representation for the hexadecimal number 4A is:
101111
111101
101101
1001010
Correct answer
101111
The motor used in household refrigerators is
single phase induction motor
Hysteresis motor
dc series motor
Reluctance motor
Correct answer
single phase induction motor
A push-pull amplifier is used for:
voltage amplification
current amplification
RF signal amplification
power amplification
Correct answer
voltage amplification
Which of the following statements is true with respect to a Primary Cell?
It can neither be recharged nor be reused.
It cannot be recharged but can be reused.
It can be recharged and reused.
It can be recharged but cannot be reused.
Correct answer
It can neither be recharged nor be reused.
Most widely used solar cell material is
steel
silicon
mercury
Cast iron
Correct answer
steel
The device used for converting continuous DC to discontinuous DC is known as a/an ________.
chopper
rectifier
oscillator
amplifier
Correct answer
chopper
A limiter circuit is also known as a:
clamp circuit
chopping circuit
clipper circuit
chopper circuit
Correct answer
clamp circuit
Burglar alarm circuits consist of
LCDs
VCDs
LVDs
IRLEDs
Correct answer
LCDs
What happens if a capacitor is placed in parallel with a DC source?
It amplifies the voltage.
The circuit acts as an open circuit.
The circuit acts as a short circuit.
It converts DC to AC.
Correct answer
It amplifies the voltage.
If a capacitor is placed in the feedback path of an op-amp circuit, then the circuit can act as
integrator
multiplier
divider
subtractor
Correct answer
integrator
The source of light for optic fibre transmission is _______.
ARC lamp
LED
mercury lamp
incandescent lamp
Correct answer
ARC lamp
BC 194 is the transistor used for:
the amplification of AF and RF signals
the rectification of AC
the amplification of AF signal
the amplification of RF signal
Correct answer
the amplification of AF and RF signals
How many counter/timer does the 8051 microcontroller have?
2
8
4
1
Correct answer
2
What happens to the resistance of an RTD with an increase in temperature?
It is uncertain.
It increases.
It remains the same.
It decreases.
Correct answer
It is uncertain.
16-bit registers consist of:
16 flip-flops
20 flip-flops
12 flip-flops
8 flip-flops
Correct answer
16 flip-flops
Identify the type of antenna shown in the following picture.
Circular
Bi-pole
Monopole
Yagi
Correct answer
Circular
The power factor of a D.C. circuit is always
Leading
Unity
Lagging
zero
Correct answer
Leading
In simple oscillators, _______ are used.
UJTs
zener diodes
SCRs
TRIACs
Correct answer
UJTs
How can a higher voltage be obtained from a solar cell?
By connecting multiple cells in series
By increasing its thickness
By connecting multiple cells in parallel
By decreasing its thickness
Correct answer
By connecting multiple cells in series
For pulse generation, the IC used is:
7402
555
7805
7432
Correct answer
7402
What is the material used for the manufacture of fiber optic cables?
Wood
Steel
Plastic
Glass
Correct answer
Wood
The frequency of the rotor current in an induction motor is equal to:
slip × input frequency
slip × stator current
half of the input frequency
the stator current
Correct answer
slip × input frequency
The combination of two half adders is a ________.
full adder
Schimtt trigger
Comparator
half adder
Correct answer
full adder
The average value of sine wave is ________ times the peak value.
1.414
0.637
2.414
1.732
Correct answer
1.414
The following figure represents a/an ________.
HEATER
FUSE
MCB
SWITCH
Correct answer
HEATER
An LVDT is used for measuring _________.
frequency
speed
temperature
displacement
Correct answer
frequency
The current towards a junction is:
twice the current towards the junction
equal to the current away from the junction
equal to the sum of currents towards the junction
not equal to the current away from the junction
Correct answer
twice the current towards the junction
What is unity gain amplifier also known as?
Voltage follower
Comparator
Single sided
Differential
Correct answer
Voltage follower
Sine Wave RMS = ________.
Peak voltage/Square root of 5
Peak voltage/Square root of 2
Peak voltage/Square root of 6
Peak voltage/Square root of 3
Correct answer
Peak voltage/Square root of 5
In case of an AC input signal in CE Transistor Load line can be given by a plot of
VCE & Ic
VBE vs Ic
VCE & Rc
VBE vs Ib
Correct answer
VCE & Ic
Cells are connected in series in order to
Decrease the voltage
Increase the Voltage
Increase the current
Increase the cell life
Correct answer
Decrease the voltage
The gain of an amplifier with feedback is known as ________ gain.
High
Open loop
Closed loop
Low
Correct answer
High
Forward biasing of a PN junction diode is indicated by which of the following connections?
−ve to anode and +ve to cathode for full cycle
+ve to anode and −ve to cathode for full cycle
+ve to cathode and −ve to anode for one half cycle, and +ve to anode and −ve to cathode for the second half cycle.
−ve to cathode and −ve to anode for full cycle
Correct answer
−ve to anode and +ve to cathode for full cycle
175 questions in the full paper