Question for RSSB PHED Support Engineer (Electrical) 2026 - Quiz / Questions / MCQ

Objective Questions

Latest RSSB PHED Support Engineer Electrical Exam Question (Objective Questions), MCQ in English

Subjects : General Knowledge, Electrical

Question Bank RSSB PHED Support Engineer (Electrical) Exam - English

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General Knowledge

Question 1Single Answer

The district of Rajasthan which touches the boundary of Uttar Pradesh —

A
Bharatpur
B
Jaipur
C
Kota
D
Pali

Question 2Single Answer

Who gave the name "Rajputana" for the Rajasthan State and in which year?

A
Col. Tod; 1806
B
Fahien; 633
C
George Thomas; 1800
D
Max Muller; 1815

Question 3Single Answer

Which of the following districts of Rajasthan has longest boundary which touches Pakistan?

A
Barmer
B
Bikaner
C
Jaisalmer
D
Ganganagar

Question 4Single Answer

Rajasthan Day is organized on —

A
20th March
B
29th March
C
30th March
D
31st March

Question 5Single Answer

Which among the following states not touches the boundry of Rajasthan ?

A
Bihar
B
Madhya Pradesh
C
Punjab
D
Uttar Pradesh

Question 6Single Answer

Which area of Rajasthan State was known as 'Maru Kantar in the Ramayana' ?

A
Bagar Region
B
Shekhawati Region
C
South-East Plateau
D
Western Rajasthan

Question 7Single Answer

Which of the following Pakistani District do not make border with Rajasthan—

A
Khairpur
B
Meerpur Khas
C
Sukkur
D
Tharparkar

Question 8Single Answer

The correct sequence in descending order of the given districts in terms of density of population in 2011 is —

A
Kota, Ajmer, Ganganagar and Churu
B
Jaipur, Bharatpur, Dausa and Alwar
C
Jaipur, Bharatpur, Alwar and Dausa
D
Alwar, Dausa, Ajmer and Churu

Question 9Single Answer

Adjacent district in Rajasthan are —

A
Churu, Jhunjhunu, Jaipur
B
Jhalawar, Bundi, Tonk
C
Sirohi, Barmer, Jaisalmer
D
Sirohi, pali, Nagaur

Question 10Single Answer

State bird of Rajasthan is —

A
Chinkara
B
Godawan
C
Neelgai
D
Peacock

Question 11Single Answer

"KUBADPATTI" of Rajasthan is located at —

A
Banswara - Dungarpur
B
Bharatpur - Alwar
C
Nagaur - Ajmer
D
Kota - Bundi

Question 12Single Answer

The smallest inter-state boundary of Rajasthan is with the state of —

A
Gujarat
B
Haryana
C
M.P.
D
Punjab

Question 13Single Answer

Which place is occupied by Rajasthan in terms of area in the country?

A
First
B
Second
C
Third
D
Fourth

Question 14Single Answer

What is the percentage of area of Rajasthan with respect to the area of India ?

A
4.6 %
B
5.8 %
C
8.2 %
D
10.4 %

Question 15Single Answer

To who did Col. James Tod dedicated his travelague "Travels in Western India" —

A
Lord Minte
B
Lord William Bentinck
C
William Hunter Blair
D
Yati Gyanchandra

Question 16Single Answer

Temperature can be expressed as derived quantity in terms of

A
length and mass
B
mass and time
C
length, mass and time
D
None of these

Question 17Single Answer

Electron volt is a unit of

A
potential difference
B
charge
C
energy
D
capacity

Question 18Single Answer

Dimensions of impulse are

A
[MLT ^–1]
B
[MLT²]
C
[MT^–2]
D
[ML^–1T^–3]

Question 19Single Answer

Potential is measured in

A
joule/coulomb
B
watt/coulomb
C
newton–second
D
None of these

Question 20Single Answer

Which of the following is not a synthetic fibre:

A
Anygora
B
Rayon
C
Nylon
D
Polyster

Question 21Single Answer

Which one of the following is not contained in Portland cement ?

A
Ca₃Al₂O₆
B
Ca₃SiO₅
C
Ca₂SiO₄
D
Ca₃(PO₄)₂

Question 22Single Answer

What is the reson for white cement to be white ?

A
It does not contain carbon
B
It does not contain silicon
C
It does not contain iron
D
It does not contain calcium

Question 23Single Answer

Which of the following contain enzymes for cellular respiration ?

A
Dictyosomes
B
Endoplasmic reticulum
C
lysosomes
D
Mitochondria

Question 24Single Answer

Which one among the following nutrients is a strctural

A
Cell membrane
B
Plasma membrane
C
Cell wall
D
Nucleus

Question 25Single Answer

Which one among the following nutrients is a structural component of the cell wall of plants ?

A
Manganese
B
Potassium
C
Phosphorus
D
Calcium

Question 26Single Answer

What does the Preamble to the Indian Constitution declare India as?

A
A Sovereign, Socialist, Secular, Democratic Republic
B
A Union of States
C
A Welfare State
D
A Communist State

Question 27Single Answer

How many fundamental rights are enshrined in the Indian Constitution?

Question 28Single Answer

Which Article of the Indian Constitution provides the right to equality?

A
Article 14
B
Article 19
C
Article 21
D
Article 32

Question 29Single Answer

Which schedule of the Indian Constitution deals with the allocation of seats in the Rajya Sabha?

A
Fourth Schedule
B
Second Schedule
C
Sixth Schedule
D
Eighth Schedule

Question 30Single Answer

Who appoints the Chief Justice of India?

A
Prime Minister
B
President
C
Parliament
D
Attorney General

Question 31Single Answer

What is the name of the campaign launched by CM Bhajanlal Sharma for water conservation in June 2025?

A
Jal Jeevan Mission
B
Vande Ganga
C
Narmada Abhiyan
D
Save Water Initiative

Question 32Single Answer

Which policy did the Rajasthan government aim to implement to train 1.5 lakh youth in the next two years?

A
Skill Policy
B
Education Policy
C
Health Policy
D
Tourism Policy

Question 33Single Answer

What was the duration of the ‘Vande Ganga’ water conservation campaign launched in June 2025?

A
June 1–15
B
June 10–25
C
June 5–20
D
June 15–30

Question 34Single Answer

Who was assigned special responsibilities for the ‘Vande Ganga’ campaign across 41 districts in Rajasthan?

A
District Collectors
B
Village Panchayats
C
Local NGOs
D
State Ministers

Question 35Single Answer

Which new exploration module was set to be launched by the Ministry of Coal on July 4, 2025, affecting Rajasthan’s coal sector?

A
Mining Safety Module
B
Coal Extraction Module
C
Digital Approval Module
D
Environmental Clearance Module

Question 36Single Answer

Which Indian state launched the ‘Green Energy Villages’ initiative in 2025 to promote renewable energy?

A
Uttar Pradesh
B
Rajasthan
C
Tamil Nadu
D
Gujarat

Question 37Single Answer

Which organization developed the K-6 hypersonic Submarine-Launched Ballistic Missile (SLBM) tested in 2025?

A
ISRO
B
HAL
C
Bharat Dynamics Limited
D
DRDO

Question 38Single Answer

Which ministry established the Passport Seva Portal to streamline passport services in 2025?

A
Ministry of Home Affairs
B
Ministry of Corporate Affairs
C
Ministry of External Affairs
D
Ministry of Electronics and IT

Question 39Single Answer

What is the primary goal of the Digital Payment Intelligence Platform (DPIP) launched by the RBI in 2025?

A
Promote cash transactions
B
Enhance cybersecurity in digital payments
C
Reduce ATM usage
D
Increase bank branch networks

Question 40Single Answer

Which Indian state topped the vulture population census in 2025?

A
Rajasthan
B
Gujarat
C
Madhya Pradesh
D
Maharashtra

Electrical

Question 41Single Answer

When a very small amount of higher conducting metal is added to a conductor, its conductivity will

A
increase
B
decrease
C
remain the same
D
increase or decrease depending on the impurity

Question 42Single Answer

An electrically balanced atom has 30 protons in its nucleus and 2 electrons in its outermost shell. The materials made of such atom is

A
a conductor
B
an insulator
C
a semiconductor
D
a superconductor

Question 43Single Answer

The temperature coefficient of resistance of a doped semiconductor is

A
always positive
B
always negative
C
zero
D
positive or negative depending upon the level of doping

Question 44Single Answer

In the slice processing of an integrated circuit

A
components are formed in the areas where silicon dioxide remains
B
components are formed in the areas where silicon dioxide has been removed
C
the diffusing elements diffuse through silicon dioxide
D
only on diffusion process is used

Question 45Single Answer

Permanent magnet loses the magnetic behaviour when heated because of
1. atomic vibration
2. dipole vibration
3. realignment of dipoles
Which of the above are correct?

A
1 and 2 only
B
1 and 3 only
C
1, 2 and 3
D
2 and 3

Question 46Single Answer

A semiconductor differs from a conductor in that it has

A
Only one path for the free electrons in the valence band
B
Only one path for holes in the conduction band
C
Two paths followed by free electrons and holes, one an ordinary path in the conduction band and the other one an extraordinary path in the valence band, respectively
D
Two paths followed by free electrons and holes, one an extraordinary path in the conduction band and the other one an ordinary path in valence band, respectively

Question 47Single Answer

Which of the following circuits is used for converting a sine wave into a square wave?

A
Monostablemultivibrator
B
Bistablemultivibrator
C
Schmitt trigger circuit
D
Darlington complementary pair

Question 48Single Answer

Which of the following elements of electrical engineering cannot be analyzed using Ohm’s law ?

A
Capacitors
B
Inductors
C
Transistors
D
Resistance

Question 49Single Answer

Consider the following statements: A power supply uses bridge rectifier with a capacitor input filter. If one of the diodes is defective, then
1. The dc load voltage will be lower than its expected value
2. Ripple frequency will be lower than its expected value
3. The surge current will increase considerably
Which of the above statements are correct?

A
1 and 2 only
B
1 and 3 only
C
2 and 3 only
D
1, 2 and 3

Question 50Single Answer

Three identical amplifiers each having a voltage gain of 50 are cascaded. The open loop voltage gain of the combined amplifier is

A
71 dB
B
82 dB
C
91 dB
D
102 dB

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Electrical

Question 51Single Answer

If a square matrix of order 100 has exactly 15 distinct eigenvalues, then the degree of the minimum polynomial is

A
At least 15
B
At most 15
C
Always 15
D
Exactly 100

Question 52Single Answer

For high speed reading and storing of information in a computer, the core shall be of

A
Ferrite
B
Piezoelectric
C
Pyroelectric
D
Ferromagnetic above 768°C

Question 53Single Answer

Soft magnetic materials should have

A
Large saturation magnetization and large permeability
B
Low saturation magnetization and large permeability
C
Large saturation magnetization and low permeability
D
Low saturation magnetization and low permeability

Question 54Single Answer

Orbital magnetic moment of an electron, in an atom, is of the order of

A
0.1 Bohr magneton
B
1.0 Bohr magneton
C
10 Bohr magneton
D
100 Bohr magneton

Question 55Single Answer

When the temperature of a ferromagnetic material exceeds the Curie temperature, it behaves similar to a

A
Diamagnetic material
B
Ferrimagnetic material
C
Paramagnetic material
D
Antiferromagnetic material

Question 56Single Answer

What is the correct sequence of the following materials in ascending order of their resistivity ?
1. Iron
2. Silver
3. Constantan
4. Mica
5. Aluminium
Select the correct answer using the codes given below :

A
2, 5, 1, 3 and 4
B
4, 5, 3, 1 and 2
C
2, 3, 1, 5 and 4
D
4, 5, 1, 3 and 2

Question 57Single Answer

In the first Cauer network, with a pole at infinity, the first element must be

A
Series capacitor
B
Series inductor
C
Shunt capacitor
D
Shunt inductor

Question 58Single Answer

The total magnetic moment
1. is called saturation magnetization.
2. depends on the number of magnetic dipoles per unit volume, the instant electric current and the area of the current loop.
Which of the above statements is/are correct ?

A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2

Question 59Single Answer

Susceptibility of a diamagnetic material is 1. Negative
2. Positive
3. Dependent on the temperature
4. Independent of the temperature

A
1 and 2 only
B
1 and 3 only
C
2 and 3 only
D
1, 2 and 3

Question 60Single Answer

Superconductivity is a material property associated with

A
Changing shape by stretching
B
Stretching without breaking
C
A loss of thermal resistance
D
A loss of electrical resistance

Question 61Single Answer

Assuming both the voltage sources are in phase, the value of R for which maximum power is transferred from circuit A to circuit B is

A
0.8 Ω
B
1.4 Ω
C
2 Ω
D
2.8 Ω

Question 62Single Answer

For the intrinsic gallium-arsenide, the conductivity at room temperature 25°C is 10^-6 (ohm-m)^-1, the electron and hole nobilities are 0.85 m²/V-s and 0.04 m²/V-s respectively. What is the intrinsic carrier concentration at the room temperature?

A
7.0 × 10¹² m^-3
B
7.0 × 10^-12 m^-3
C
7.0 × 10^-12 m³
D
7.0 × 10¹² m³

Question 63Single Answer

The resistivity of intrinsic germanium at 30°C is 0.46 –m. What is the intrinsic carrier density at 30°C if the electron mobility is 0.38 m²/V-s and the hole mobility is 0.18 m²/V-s?

A
9.2 × 10⁵/m³
B
2.77 × 10³/m³
C
2.43 × 10¹⁹/m³
D
8.9 × 10¹²/m³

Question 64Single Answer

Heat conduction in a semiconductor takes place

A
By the mobility of the carriers
B
Due to energy gap between conduction band and valency band
C
By the holes and thermal vibrations of atoms
D
By the electrons and thermal vibrations of atoms

Question 65Single Answer

Brewster angle is the angle when a wave is incident on the surface of a perfect dielectric at which there is no reflected wave and the incident wave is

A
Parallel polarized
B
Perpendicularly polarized
C
Normally polarized
D
None of the above

Question 66Single Answer

An electrical breakdown of a p-n junction occurs if

A
Forward voltage increases up to the rating
B
Reverse voltage increases beyond the rating
C
Forward voltage decreases below the rating
D
Reverse voltage decreases below the rating

Question 67Single Answer

The chief deterrent to the widespread application of superconducting materials is

A
Very difficult to form, machine or case
B
The difficult in attaining and maintaining extremely low temperature
C
The poor strength-to-weight ratio
D
The lower oxidation rate at elevated temperatures

Question 68Single Answer

Which one of the following properties is not observed in the carbon nanotubes ?

A
High stiffness and strengths
B
Low densities
C
Unusual electrical property
D
Non-ductile

Question 69Single Answer

The evidence for the importance of electron-phonon interaction in super-conductors comes from

A
Meissner effect
B
Josephson effect
C
Isotope effect
D
x quantization experiments

Question 70Single Answer

Which one of the following materials is used for cable insulation ?

A
Phenol formaldehyde
B
Polytetrafluoroethylene
C
Polyvinyl chloride
D
Acrylonitrile butadiene styrene

Question 71Single Answer

Resistance switching is normally resorted in case of

A
Air blast CB
B
Bulk oil CB
C
Minimum oil CB
D
All types of CB

Question 72Single Answer

By transmitting power at high voltage

A
it will give poor voltage regulation
B
it will give better voltage regulation
C
it will not effect voltage regulation
D
None of these

Question 73Single Answer

Which statement about the daily load curve is valid ?

A
The area under the curve gives the average demand
B
The ratio of the area under the curves to the total area of rectangle in which it is contained gives the load factor for the day
C
The peak of the curve gives the installed capacity of the plant
D
The area of the curves divided by the number of hours gives load factor

Question 74Single Answer

High voltage Schring bridge is used to measure

A
large capacitance without additional element
B
small capacitance without additional element
C
medium value capacitance
D
None of these

Question 75Single Answer

Draw - in - system of laying underground cables has the drawback (s) of

A
higher cost
B
reduced current carrying capacity of the cables
C
requirements of much deeper and wider trenches
D
repairs, alterations or additions difficult
E
all of the above except

Question 76Single Answer

Surge impedance of a transmission line is

A
independent of its length
B
dependent on its length
C
independent on its temperature
D
none of the above

Question 77Single Answer

If two synchronous generators connected in parallel loose synchronism, it will lead to

A
stalling of generators
B
wild fluctuations in current
C
wild fluctuations in current and voltage
D
None of these

Question 78Single Answer

A differential relay responds to

A
algebraic difference of two or more similar electrical quantities
B
vector difference of two or more similar electrical quantities
C
algebraic difference between two currents
D
algebraic difference between two voltages

Question 79Single Answer

The conductor carries more current on the surface in comparison to its core. This phenomenon is called the

A
Skin effect
B
Corona
C
Ferranti effect
D
Lenz's effect

Question 80Single Answer

A booster is connected in

A
series with the feeder
B
parallel with the feeder
C
both (a) and (b) are correct
D
none of these

Question 81Single Answer

Fuses have got advantages of

A
cheapest type of protection
B
inverse time - current characteristic
C
no maintenance
D
current limiting effect under short - circuit conditions
E
all of the above

Question 82Single Answer

The power transmitted will be maximum when

A
line reactance is high
B
corona losses are minimum
C
sending end voltage is more
D
receiving end voltage is more

Question 83Single Answer

The connected load of a consumer is 2 kW and his maximum demand is 1.5 kW. The load factor of the consumer is

A
0.75
B
0.375
C
1.33
D
None of these

Question 84Single Answer

In a transformer, the exciting current will be in phase quadrature with the impressed voltage provided

A
only the leakage impedance drop is ignored
B
only the core loss is ignored
C
both the leakage impedance drop and the core loss are ignored
D
only the no - load copper loss is ignored

Question 85Single Answer

Which of the following techniques is used for the measurements of a.c. high frequency voltages ?

A
Peak voltmeter
B
Series resistance mircro - ammeter
C
Resistance potential divider
D
All of these

Question 86Single Answer

Use of additional shunt capacitor can be made for increasing the capability of line as it

A
reduces surge impedance Z₀
B
increases phase shift β
C
increase in α
D
all of the above

Question 87Single Answer

The sag of a transmission line is least affected owing to

A
weight of the conductor
B
current through the conductor
C
atmospheric temperature
D
ice deposited on the conductor

Question 88Single Answer

In case of Impulse Thermal break down of solid insulating materials, the critical electric field is proportional to

A
critical absolute temperature
B
square of critical absolute temperature
C
square of T₀
D
none of these

Question 89Single Answer

The insulation of the modern EHV lines is designed based on

A
corona
B
switching voltages
C
lightning voltage
D
all of these

Question 90Single Answer

For constant voltage transmission, the voltage drop along the line is maintained constant by installing

A
capacitors
B
inductors
C
resistors
D
synchronous phase modifiers at the receiving end

Question 91Single Answer

AC network analyser is employed for solving the problems of

A
load flow
B
load flow and stability
C
load flow and short - circuit
D
load flow, stability and short - circuit

Question 92Single Answer

The change in excitation in an alternator connected to an infinite line provides a corresponding change in

A
terminal voltage
B
speed of rotor
C
power generated
D
power factor

Question 93Single Answer

Different types of insulators used for transmission lines are

A
pin type only
B
suspension type only
C
strain type only
D
pin type, suspension type and shackle type

Question 94Single Answer

The conductor connecting consumer's terminals to the distributor is called the

A
feeder
B
distributor
C
service main
D
none of the above

Question 95Single Answer

Which of the following method or techniques can be used for the measurement of high d.c. voltages ?

A
Generating voltmeter
B
Electrostatic voltmeter
C
Peak voltmeter
D
Half effect generators

Question 96Single Answer

The ripple voltage in dc output is small if

A
frequency of supply voltage is small
B
the filtering capacitor is small
C
load current is small
D
none of these

Question 97Single Answer

The voltage measurements using uniform spark gap are

A
affected by dust particles
B
affected by polarity of supply
C
affected by temperature
D
none of these

Question 98Single Answer

Neutral earthing is provided for

A
the safety of personnel from electric shock
B
the safety of equipment and personnel against lightning and voltage surges
C
reducing the voltage stress on lines and equipment with respect to earth under various operating and fault conditions
D
controlling the earth fault currents for protective relaying
E
both (c) and (d)

Question 99Single Answer

The function of Lightning arrester is

A
to limiting the short - circuit fault current
B
to provide path to high voltage surge to earth
C
to reduce arcing
D
none of these

Question 100Single Answer

In which of the following cases are delay fuses used ?

A
For the protection of light circuits
B
For the protection of power out - let circuits
C
For the protection of fluorescent lamps
D
For the protection of motors

Question 101Single Answer

In order to improve the voltage profile of the line, compensation is resorted by providing

A
capacitors at the receiving end
B
reactors at the receiving end
C
resistors at the receiving end
D
none of these

Question 102Single Answer

Skin effect in conductor is proportional to

A
(diameter of conductor) ^1/2
B
diameter of conductor
C
(diameter of conductor)²
D
(diameter of conductor)⁴

Question 103Single Answer

The function of steel wire in an ACSR conductor is to

A
compensate for skin effect
B
take care of surges
C
provide additional mechanical strength
D
reduce inductance

Question 104Single Answer

A fault is more severe from the view point of RRRV if it is a

A
Short length fault
B
Medium length line fault
C
Long length line fault
D
None of these

Question 105Single Answer

Protective resistance to be connected between the sphere gap and the test equipment is required while measuring

A
power frequency and higher frequency a.c. voltage
B
power frequency and impulse voltage
C
all kinds of voltages
D
none of these

Question 106Single Answer

Series capacitor is used in a transmission line to

A
compensate the voltage drop
B
reduce line loss
C
limit short circuit current
D
improve load power factor

Question 107Single Answer

The passive element that is used as interconnecting element for the stable operation of interconnected system is

A
reactor
B
resistor
C
capacitor
D
resistor and capacitor

Question 108Single Answer

Corona loss in a transmission line is dependent on

A
diameter of the conductor
B
material of the conductor
C
height of the conductor
D
none of these

Question 109Single Answer

In a minimum oil circuit breaker the oil is used

A
to act as circuit breaking medium only
B
for circuit breaking and providing insulation
C
for providing insulation only
D
for none of the above purposes

Question 110Single Answer

Skin effect is

A
proportional to frequency
B
proportional to square of frequency
C
inversely proportional to frequency
D
independent of frequency

Question 111Single Answer

Rated making capacity of breaker is equal to

A
X rated symmetrical breaking capacity
B
2.55 X rated symmetrical breaking capacity
C
1 X rated symmetrical breaking capacity
D
none of these

Question 112Single Answer

The main reason for using high voltage for long distance power transmission is

A
reduction in transmission losses
B
reduction in time of transmission
C
increase in system reliability
D
none of the above

Question 113Single Answer

Bus - coupler is very essential in

A
single bus - bar arrangement
B
ring bus - bar arrangement
C
double bus, double breaker arrangement
D
main and transfer bus

Question 114Single Answer

With the rise in temperature, the insulation resistivity

A
remains unchanged
B
decreases linearly
C
increases linearly
D
reduces exponentially

Question 115Single Answer

The effect of bonding the cable is

A
to increase the effective resistance and inductance
B
to increase the effective resistance but reduce inductance
C
to reduce the effective resistance and inductance
D
to reduce the effective resistance but increase the inductance

Question 116Single Answer

Increase in temperature in overhead transmission lines causes

A
increase in stress and length
B
decrease in stress and length
C
decrease in stress but increase in length
D
none of the above

Question 117Single Answer

The insulation resistance of the cable decreases with the

A
increase in length of cable
B
decrease in length of cable
C
electric stresses
D
none of these

Question 118Single Answer

Corona has the disadvantage(s) of

A
power loss
B
interference with neighbouring communication circuits
C
introducing the harmonics, predominately third harmonics, into the transmission lines
D
all of the above

Question 119Single Answer

In a load duration curve for an intergrated power system the uppermost crest represents the energy contributed by

A
base power stations
B
major thermal stations
C
peaking hydro or gas turbine stations
D
non - conventional power stations

Question 120Single Answer

At bridge crossing and near the railway track ternary lead cables are used because they

A
are of high tensile strength
B
are of low coefficient of thermal expansion
C
are of low specific gravity
D
can withstand shocks and vibrations

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