Question for NHSRCL Technician (Signalling & Telecom) 2026 - Quiz / Questions / MCQ

Objective Questions

Latest NHSRCL Technician Signalling and Telecom Exam Question (Objective Questions), MCQ in English

Subjects : Domain Knowledge (Signalling & Telecom), Quantitative Aptitude, Logical Reasoning, General Knowledge & English

Question Bank NHSRCL Technician Signalling and Telecom Exam - English

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Domain Knowledge (Signalling & Telecom)

Question 1Single Answer

What is the RMS value of a sinusoidal AC current with peak value (I_m)?

A
(I_m)
B
(2I_m)
C
(I_m/2)
D
(I_m/\sqrt{2})

Question 2Single Answer

What is the peak value of an AC voltage if its RMS value is 230 V?

A
325 V
B
162.6 V
C
230 V
D
460 V

Question 3Single Answer

What is the standard frequency of AC supply in India?

A
25 Hz
B
40 Hz
C
50 Hz
D
60 Hz

Question 4Single Answer

What is the phase difference between voltage and current in a purely resistive AC circuit?

A
90°
B
0°
C
45°
D
180°

Question 5Single Answer

What is the phase difference between voltage and current in a purely inductive circuit?

A
0°
B
45°
C
180°
D
90°

Question 6Single Answer

What is the phase difference between voltage and current in a purely capacitive circuit?

A
Voltage leads current by 90°
B
Current leads voltage by 90°
C
Voltage and current are in phase
D
Phase difference is 180°

Question 7Single Answer

What is the unit of frequency?

A
Hertz
B
Watt
C
Volt
D
Ohm

Question 8Single Answer

What does one complete AC cycle represent?

A
90°
B
360°
C
270°
D
180°

Question 9Single Answer

What is the reciprocal of frequency?

A
Impedance
B
Time period
C
Reactance
D
Power

Question 10Single Answer

What is the SI unit of phase angle?

A
Degree
B
Watt
C
Volt
D
Henry

Question 11Single Answer

What is the power factor of a purely resistive circuit?

A
1
B
0.5
C
0
D
0.707

Question 12Single Answer

What is the power factor of a purely inductive circuit?

A
0
B
1
C
0.8
D
0.5

Question 13Single Answer

Which instrument is commonly used to measure power factor?

A
Ammeter
B
Wattmeter
C
Power Factor Meter
D
Voltmeter

Question 14Single Answer

Which power is measured in watts?

A
Reactive power
B
Apparent power
C
Complex power
D
Active power

Question 15Single Answer

What is the unit of apparent power?

A
W
B
VAR
C
VA
D
Joule

Question 16Single Answer

What is the unit of reactive power?

A
Watt
B
Volt
C
VAR
D
VA

Question 17Single Answer

Which component improves power factor?

A
Resistor
B
Transformer
C
Fuse
D
Capacitor

Question 18Single Answer

What is the waveform of a standard AC supply?

A
Square
B
Sinusoidal
C
Sawtooth
D
Triangular

Question 19Single Answer

Which parameter determines the number of cycles per second?

A
Frequency
B
Current
C
Voltage
D
Resistance

Question 20Single Answer

Which quantity changes direction periodically in AC?

A
Voltage and Current
B
Resistance
C
Frequency
D
Power Factor

Question 21Single Answer

Which cable is generally used for underground power distribution?

A
Bare conductor
B
ACSR conductor
C
PVC insulated cable
D
GI wire

Question 22Single Answer

Which conductor material is most commonly used in power cables?

A
Zinc
B
Tin
C
Copper
D
Lead

Question 23Single Answer

Which conductor material is widely used for overhead transmission lines?

A
Copper
B
Silver
C
Aluminium
D
Brass

Question 24Single Answer

What is the main purpose of cable insulation?

A
Increase voltage
B
Increase current
C
Prevent leakage current
D
Reduce frequency

Question 25Single Answer

Which insulation material is commonly used in LT cables?

A
PVC
B
Wood
C
Paper
D
Cotton

Question 26Single Answer

Which insulation material has excellent thermal properties for power cables?

A
XLPE
B
Rubber
C
Cotton
D
Silk

Question 27Single Answer

What is the purpose of cable armoring?

A
Increase voltage
B
Reduce resistance
C
Provide mechanical protection
D
Improve frequency

Question 28Single Answer

Which material is commonly used for cable armoring?

A
Plastic
B
Aluminium foil
C
Steel wire
D
Glass

Question 29Single Answer

Which part of a cable carries electric current?

A
Sheath
B
Insulation
C
Armor
D
Conductor

Question 30Single Answer

What is the outer protective covering of a cable called?

A
Core
B
Conductor
C
Sheath
D
Dielectric

Question 31Single Answer

Which cable has a single conducting core?

A
Twin-core cable
B
Three-core cable
C
Single-core cable
D
Four-core cable

Question 32Single Answer

Which cable is commonly used for three-phase supply?

A
Single-core cable
B
Twin-core cable
C
Three-core cable
D
Coaxial cable

Question 33Single Answer

Which cable is specially designed for communication systems?

A
PVC cable
B
Twin-core cable
C
Coaxial cable
D
VIR cable

Question 34Single Answer

Which cable uses optical fibers for data transmission?

A
XLPE cable
B
Lead-sheathed cable
C
PVC cable
D
Fiber optic cable

Question 35Single Answer

Which cable has the highest bandwidth?

A
Twisted pair cable
B
Fiber optic cable
C
Coaxial cable
D
PVC cable

Question 36Single Answer

What is the main advantage of fiber optic cable?

A
High electromagnetic interference
B
Immunity to electromagnetic interference
C
Low data speed
D
High resistance losses

Question 37Single Answer

Which cable is most suitable for railway signaling communication?

A
Fiber optic cable
B
Cotton insulated cable
C
VIR cable
D
Bare conductor

Question 38Single Answer

What is the current-carrying capacity of a cable mainly dependent on?

A
Cable color
B
Manufacturer name
C
Insulation and conductor size
D
Cable length only

Question 39Single Answer

Increasing conductor cross-sectional area will generally?

A
Reduce current capacity
B
Reduce insulation strength
C
Increase current capacity
D
Reduce frequency

Question 40Single Answer

Which factor reduces cable current-carrying capacity?

A
Better ventilation
B
Improved insulation
C
Larger conductor size
D
Higher ambient temperature

Question 41Single Answer

Which overhead conductor is commonly used in transmission lines?

A
ACSR
B
PVC
C
XLPE
D
VIR

Question 42Single Answer

What does ACSR stand for?

A
Aluminium Cable Steel Reinforced
B
Aluminium Conductor Solid Rubber
C
Armored Copper Steel Reinforced
D
Aluminium Conductor Steel Reinforced

Question 43Single Answer

Which type of cable is generally used inside buildings?

A
ACSR conductor
B
Bare conductor
C
PVC insulated cable
D
GI strip

Question 44Single Answer

Which insulation material is suitable for higher voltage applications?

A
Cotton
B
XLPE
C
Paper tape
D
Silk

Question 45Single Answer

Which part prevents moisture from entering the cable?

A
Sheath
B
Conductor
C
Core
D
Strand

Question 46Single Answer

What is the function of cable bedding?

A
Increase voltage
B
Increase frequency
C
Protect insulation from armor
D
Carry current

Question 47Single Answer

Which type of conductor is flexible?

A
Solid conductor
B
Stranded conductor
C
Flat conductor
D
Hollow conductor

Question 48Single Answer

Which cable is preferred where flexibility is required?

A
Stranded conductor cable
B
Solid conductor cable
C
Bare conductor
D
ACSR conductor

Question 49Single Answer

Which property of insulation should be high?

A
Resistance
B
Conductivity
C
Capacitance
D
Inductance

Question 50Single Answer

Which cable fault occurs due to insulation breakdown between conductors?

A
Open circuit fault
B
Earth continuity fault
C
Mechanical fault
D
Short circuit fault

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Domain Knowledge (Signalling & Telecom)

Question 51Single Answer

Which cable fault occurs when the conductor breaks?

A
Earth fault
B
Short circuit fault
C
Open circuit fault
D
Leakage fault

Question 52Single Answer

Which cable fault occurs when a conductor touches the earth?

A
Open circuit
B
Phase reversal
C
Cross fault
D
Earth fault

Question 53Single Answer

Which cable is generally laid below ground?

A
Busbar
B
Overhead conductor
C
Underground cable
D
Bare wire

Question 54Single Answer

Which cable installation method offers better protection from weather?

A
Underground
B
Overhead
C
Open wiring
D
Cleat wiring

Question 55Single Answer

Which cable installation is easier to inspect?

A
Underground
B
Overhead
C
Buried duct
D
Tunnel cable

Question 56Single Answer

Which cable has lower exposure to lightning?

A
Overhead cable
B
Underground cable
C
Bare conductor
D
Open wire

Question 57Single Answer

What is the primary disadvantage of underground cables?

A
Difficult fault location
B
Low insulation
C
High exposure to weather
D
Poor reliability

Question 58Single Answer

Which parameter is expressed in hertz?

A
Frequency
B
Voltage
C
Current
D
Resistance

Question 59Single Answer

In AC circuits, power factor is the cosine of?

A
Resistance
B
Phase angle
C
Frequency
D
Voltage

Question 60Single Answer

Which type of power does not perform useful work?

A
Active power
B
Apparent power
C
Reactive power
D
Output power

Question 61Single Answer

Which quantity is the product of RMS voltage and RMS current?

A
Active power
B
Apparent power
C
Reactive power
D
True power

Question 62Single Answer

Which cable insulation is widely used in modern railway power and signaling installations?

A
Paper only
B
Cotton
C
Silk
D
XLPE

Question 63Single Answer

Which type of cable provides excellent immunity against electrical noise?

A
Bare conductor
B
ACSR conductor
C
Twin wire
D
Fiber optic cable

Question 64Single Answer

Which factor directly affects the voltage drop in a cable?

A
Frequency only
B
Cable color
C
Insulation color
D
Conductor resistance

Question 65Single Answer

Which cable parameter should be selected correctly to avoid overheating during operation?

A
Current-carrying capacity
B
Cable length only
C
Cable color
D
Number of strands only

Question 66Single Answer

Which of the following is a primary cell?

A
Lead-acid cell
B
Nickel-Cadmium cell
C
Lithium-ion cell
D
Zinc-Carbon cell

Question 67Single Answer

Which of the following is a secondary cell?

A
Dry cell
B
Lead-Acid cell
C
Zinc-Air cell
D
Mercury cell

Question 68Single Answer

Which battery is widely used in railway signaling power backup systems?

A
Mercury battery
B
Silver Oxide battery
C
Zinc-Carbon battery
D
Lead-Acid battery

Question 69Single Answer

Which electrolyte is used in a Lead-Acid battery?

A
Hydrochloric acid
B
Sulphuric acid
C
Nitric acid
D
Acetic acid

Question 70Single Answer

Which electrolyte is used in a Nickel-Cadmium battery?

A
Potassium hydroxide
B
Sulphuric acid
C
Hydrochloric acid
D
Distilled water

Quantitative Aptitude

Question 71Single Answer

The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?

A
51:52
B
52:53
C
51:53
D
52:55

Question 72Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 73Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 74Single Answer

Arrange in descending order: 5/8, 7/10, 3/4

A
3/4 > 7/10 > 5/8
B
7/10 > 3/4 > 5/8
C
3/4 > 5/8 > 7/10
D
5/8 > 7/10 > 3/4

Question 75Single Answer

What is (3^{^}{4} times 9^{^}{2}) ?

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 76Single Answer

Passage :

information given below and answer the question that follow.
The result of an exam is given below. Out of 1000 students who appeared
(i) 658 failed in Physics
(ii) 166 failed in Physics and Chemistry
(iii) 372 failed in Chemistry, 434 failed in Physics and Maths
(iv) 590 failed in Maths, 126 failed in Maths & Chemistry
Find the number of people who failed in (assuming that none is passed in all subjects.

We have the following equations:
a+ b + c + d + e + f + g = 1000
a + b + d + e = 658, b + d = 166
b + d + c + f = 372
d + e = 434 as in the figure.
d + e + f + g = 590, d + f = 126. Find the values

Chemistry but not in Physics.

A
318
B
198
C
213
D
206

Question 77Single Answer

Passage :

Direction: information given below and answer the question that follow.
The result of an exam is given below. Out of 1000 students who appeared
(i) 658 failed in Physics
(ii) 166 failed in Physics and Chemistry
(iii) 372 failed in Chemistry, 434 failed in Physics and Maths
(iv) 590 failed in Maths, 126 failed in Maths & Chemistry
Find the number of people who failed in (assuming that none is passed in all subjects.

We have the following equations:
a+ b + c + d + e + f + g = 1000
a + b + d + e = 658, b + d = 166
b + d + c + f = 372
d + e = 434 as in the figure.
d + e + f + g = 590, d + f = 126. Find the values

Physics or Maths but not in Chemistry.

A
558
B
718
C
628
D
None of these

Question 78Single Answer

Passage :

For the next four question that follow:
In a city, three daily newspapers A, B, C are published, 42% read A; 51% read B; 68% read C; 30% read A and B; 28% read B and C; 36% read A and C; 8% do not read any of the three newspapers.

Let x% people read all the three newspapers.
Since 8% people do not read any newspapers.
(x – 24) + (x – 7) + (x + 4) + (30 – x) + (36 – x) + (28 – x) + x = 92
→ x + 98 – 31 = 92
→ x = 92 – 67 = 25

What is the percentage of persons who read all the three papers ?

A
20%
B
25%
C
30%
D
40%

Question 79Single Answer

Passage :

For the next four : question that follow :
In a city, three daily newspapers A, B, C are published, 42% read A; 51% read B; 68% read C; 30% read A and B; 28% read B and C; 36% read A and C; 8% do not read any of the three newspapers.

What is the percentage of persons who read only two papers?

A
19%
B
31%
C
44%
D
None of these

Question 80Single Answer

Passage :

What is the percentage of persons who read only one paper ?

A
38%
B
48%
C
51%
D
None of these

Logical Reasoning

Question 81Single Answer

How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?

A
Two
B
Three
C
Five
D
Four
E
None of these

Question 82Single Answer

Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is

A
True
B
False
C
Uncertain
D
None

Question 83Single Answer

If it is possible to make only one meaningful word with the second, the third, the sixth and the eight letters of the word FRAGMENT using each only once, which of the following will be the third letter of that word ? If no such word can be formed, give ‘X’ as the answer and if more than one such word can be formed, give ‘Y’ as the answer.

Question 84Single Answer

How many such letters are there in the word ORIENTAL each of which is as far away from the beginning of the word as when they are arranged alphabetically?

A
None
B
One
C
Two
D
Three
E
More than three

Question 85Single Answer

How many such pairs of letters in the word CREDIT each of which has as many letters between them in the word as in the English alphabet?

A
None
B
One
C
Two
D
Three
E
More than three

Question 86Single Answer

Passage :

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z .

Which letter in this alphabet is the eighth letter to the right of the letter and which is tenth letter to the left of the last but one letter of the alphabet ?

Question 87Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the third alphabet of each of the words is changed to the next alphabet in the English alphabetical series, which of the following will form a meaningful English word?

A
SUM
B
BIG
C
Both BIG and THE
D
FOR
E
Both FOR and BIG

Question 88Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be second from the right ?

A
AND
B
FOR
C
THE
D
BIG
E
SUM

Question 89Single Answer

Passage :

Direction: The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If second alphabet in each of the words is changed to next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed ?

A
None
B
One
C
Two
D
Three
E
Four

Question 90Single Answer

Passage :

How many letters are there in the English alphabetical series between the second letter of the word which is second from the right and the second letter of the word which is second from the left of the given words?

A
Two
B
Five
C
Six
D
Nine
E
Three

General Knowledge & English

Question 91Single Answer

I go to Madurai by —– Vaigai Express

A
a
B
an
C
some
D
the

Question 92Single Answer

Have the car stolen!

A
Steal the car
B
You should have the stolen car
C
Get someone to steal the car
D
They have stolen the car

Question 93Single Answer

Passage :

Direction : Question below has two blanks, each blank indicting that some thing has been omitted. Choose the word for each blank which best fits the meaning of the sentence as a whole.

The Finance Department has ……………a centralized online databank system for all statutory government bodies to …………an eye on their assets and liabilities.

A
presented , stay
B
introduced , keep
C
announce , make
D
created , let
E
proclaimed , hold

Question 94Single Answer

Passage :

Direction : The five items in this section consists of a word or group of words followed by four words as (a), (b), (c) and (d). Select the word which is nearly opposite to the meaning of the original word or group of words and mark your response as (a), (b), (c) and (d), as the case may be, in your Answer Sheet.

Assets

A
liabilities
B
responsibilities
C
estates
D
profits

Question 95Single Answer

Passage :

Direction : In the question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Affidavit

A
Affirmation
B
Slander
C
Oath
D
Testimony

Question 96Single Answer

Which is the national game of Bhutan ?

A
badminton
B
basketball
C
football
D
archery

Question 97Single Answer

When was the Constituent Assembly of India formed?

A
1946
B
1947
C
1948
D
1950

Question 98Single Answer

Which is the longest river in India?

A
Yamuna
B
Ganges
C
Brahmaputra
D
Godavari

Question 99Single Answer

Who among the following was associated with Enlightenment philosophy?

A
Voltaire
B
Shakespeare
C
Erasmus
D
All of the above

Question 100Single Answer

On what date did India celebrate the 9th anniversary of the Goods and Services Tax (GST) implementation?

A
July 1, 2026
B
June 30, 2026
C
July 2, 2026
D
June 29, 2026

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Latest NHSRCL Technician Signalling and Telecom Exam Question (Objective Questions), MCQ in English

Domain Knowledge (Signalling & Telecom)

NHSRCL Technician Signalling and Telecom Exam Online Question Bank Package

Domain Knowledge (Signalling & Telecom)

Quantitative Aptitude

Logical Reasoning

General Knowledge & English

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