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Question Bank

GSECL Vidyut Sahayak (Plant Attendant) Electrical Exam - English

Duration: 120 · Questions: 100 · Max Marks: 100 · Language: 3

View GSECL Vidyut Sahayak (Plant Attendant) Electrical 2026 Exam Page

Technical Subject (Electrical)

1
When a very small amount of higher conducting metal is added to a conductor, its conductivity will 
  1. A.increase
  2. B. decrease
  3. C.remain the same 
  4. D.increase or decrease depending on the impurity
2
An electrically balanced atom has 30 protons in its nucleus and 2 electrons in its outermost shell. The materials made of such atom is
  1. A.a conductor
  2. B.an insulator
  3. C.a semiconductor 
  4. D.a superconductor
3
The temperature coefficient of resistance of a doped semiconductor is
  1. A.always positive
  2. B.always negative
  3. C.zero 
  4. D.positive or negative depending upon the level of doping 
4
In the slice processing of an integrated circuit
  1. A.components are formed in the areas where silicon dioxide remains
  2. B.components are formed in the areas where silicon dioxide has been removed
  3. C.the diffusing elements diffuse through silicon dioxide 
  4. D.only on diffusion process is used 
5
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?
  1. A.1  and 2 only 
  2. B.1 and 3 only
  3. C.1, 2 and 3         
  4. D.2 and 3
6
A semiconductor differs from a conductor in that it has
  1. A.Only one path for the free electrons in the valence band
  2. B.Only one path for holes in the conduction band
  3. 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 
  4. 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 
7
Which of the following circuits is used for converting a sine wave into a square wave?
  1. A.Monostablemultivibrator
  2. B.Bistablemultivibrator
  3. C.Schmitt trigger circuit 
  4. D.Darlington complementary pair
8
Which of the following elements of electrical engineering cannot be analyzed using Ohm’s law ?
  1. A.Capacitors
  2. B.​Inductors
  3. C.Transistors
  4. D.Resistance
9
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?
  1. A.1  and 2 only 
  2. B.1 and 3 only
  3. C.2 and 3 only 
  4. D.1, 2 and 3 
10
Three identical amplifiers each having a voltage gain of 50 are cascaded. The open loop voltage gain of the combined amplifier is
  1. A.71 dB 
  2. B.82 dB 
  3. C.91 dB 
  4. D.102 dB 
11
If a square matrix of order 100 has exactly 15 distinct eigenvalues, then the degree of the minimum polynomial is 
  1. A.At least 15 
  2. B.At most 15 
  3. C.Always 15 
  4. D.Exactly 100
12
For high speed reading and storing of information in a computer, the core shall be of 
  1. A.Ferrite 
  2. B.Piezoelectric 
  3. C.Pyroelectric 
  4. D.Ferromagnetic above 768°C
13
Soft magnetic materials should have 
  1. A.Large saturation magnetization and large permeability 
  2. B.Low saturation magnetization and large permeability 
  3. C.Large saturation magnetization and low permeability 
  4. D.Low saturation magnetization and low permeability 
14
Orbital magnetic moment of an electron, in an atom, is of the order of 
  1. A.0.1 Bohr magneton 
  2. B.1.0 Bohr magneton 
  3. C.10 Bohr magneton 
  4. D.100 Bohr magneton
15
When the temperature of a ferromagnetic material exceeds the Curie temperature, it behaves similar to a 
  1. A.Diamagnetic material 
  2. B.Ferrimagnetic material 
  3. C.Paramagnetic material 
  4. D. Antiferromagnetic material
16
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

                 
  1. A.0.8 Ω
  2. B.1.4 Ω
  3. C.2 Ω
  4. D.2.8 Ω
17
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?
  1. A.7.0 × 1012 m-3
  2. B.7.0 × 10-12 m-3
  3. C.7.0 × 10-12 m3
  4. D.7.0 × 1012 m3
18
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?
  1. A.9.2 × 105/m3
  2. B.2.77 × 103/m3
  3. C.2.43 × 1019/m3
  4. D.8.9 × 1012/m3
19
Heat conduction in a semiconductor takes place
  1. A.By the mobility of the carriers
  2. B.Due to energy gap between conduction band and valency band
  3. C.By the holes and thermal vibrations of atoms
  4. D.By the electrons and thermal vibrations of atoms
20
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
  1. A.Parallel polarized
  2. B.Perpendicularly polarized
  3. C.Normally polarized
  4. D.None of the above
21
Resistance switching is normally resorted in case of
  1. A.Air blast CB
  2. B.Bulk oil CB
  3. C.Minimum oil CB
  4. D.All types of CB
22
By transmitting power at high voltage
  1. A.it will give poor voltage regulation
  2. B.it will give better voltage regulation
  3. C.it will not effect voltage regulation
  4. D.None of these
23
Which statement about the daily load curve is valid ?
  1. A.The area under the curve gives the average demand
  2. 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
  3. C.The peak of the curve gives the installed capacity of the plant
  4. D.The area of the curves divided by the number of hours gives load factor
24
High voltage Schring bridge is used to measure
  1. A.large capacitance without additional element
  2. B.small capacitance without additional element
  3. C.medium value capacitance
  4. D.None of these
25
Draw - in - system of laying underground cables has the drawback (s) of
  1. A.higher cost
  2. B.reduced current carrying capacity of the cables
  3. C.requirements of much deeper and wider trenches
  4. D.repairs, alterations or additions difficult
  5. E.all of the above except
26
Surge impedance of a transmission line is
  1. A.independent of its length
  2. B.dependent on its length
  3. C.independent on its temperature
  4. D.none of the above
27
If two synchronous generators connected in parallel loose synchronism, it will lead to
  1. A.stalling of generators
  2. B.wild fluctuations in current
  3. C.wild fluctuations in current and voltage
  4. D.None of these
28
A differential relay responds to
  1. A.algebraic difference of two or more similar electrical quantities
  2. B.vector difference of two or more similar electrical quantities
  3. C.algebraic difference between two currents
  4. D.algebraic difference between two voltages
29
The conductor carries more current on the surface in comparison to its core. This phenomenon is called the
  1. A.Skin effect
  2. B.Corona
  3. C.Ferranti effect
  4. D.Lenz's effect
30
A booster is connected in
  1. A.series with the feeder
  2. B.parallel with the feeder
  3. C.both (a) and (b) are correct
  4. D.none of these
31
Fuses have got advantages of
  1. A.cheapest type of protection
  2. B.inverse time - current characteristic
  3. C.no maintenance
  4. D.current limiting effect under short - circuit conditions
  5. E.all of the above
32
The power transmitted will be maximum when
  1. A.line reactance is high
  2. B.corona losses are minimum
  3. C.sending end voltage is more
  4. D.receiving end voltage is more
33
The connected load of a consumer is 2 kW and his maximum demand is 1.5 kW. The load factor of the consumer is
  1. A.0.75
  2. B.0.375
  3. C.1.33
  4. D.None of these
34
In a transformer, the exciting current will be in phase quadrature with the impressed voltage provided
  1. A.only the leakage impedance drop is ignored
  2. B.only the core loss is ignored
  3. C.both the leakage impedance drop and the core loss are ignored
  4. D.only the no - load copper loss is ignored
35
Which of the following techniques is used for the measurements of a.c. high frequency voltages ?
  1. A.Peak voltmeter
  2. B.Series resistance mircro - ammeter
  3. C.Resistance potential divider
  4. D.All of these
36
Use of additional shunt capacitor can be made for increasing the capability of line as it
  1. A.reduces surge impedance Z0
  2. B.increases phase shift β
  3. C.increase in α
  4. D.all of the above
37
The sag of a transmission line is least affected owing to
  1. A.weight of the conductor
  2. B.current through the conductor
  3. C.atmospheric temperature
  4. D.ice deposited on the conductor
38
In case of Impulse Thermal break down of solid insulating materials, the critical electric field is proportional to
  1. A.critical absolute temperature
  2. B.square of critical absolute temperature
  3. C.square of T0
  4. D.none of these
39
The insulation of the modern EHV lines is designed based on
  1. A.corona
  2. B.switching voltages
  3. C.lightning voltage
  4. D.all of these
40
For constant voltage transmission, the voltage drop along the line is maintained constant by installing
  1. A.capacitors
  2. B.inductors
  3. C.resistors
  4. D.synchronous phase modifiers at the receiving end
41
AC network analyser is employed for solving the problems of
  1. A.load flow
  2. B.load flow and stability
  3. C.load flow and short - circuit
  4. D.load flow, stability and short - circuit
42
The change in excitation in an alternator connected to an infinite line provides a corresponding change in
  1. A.terminal voltage
  2. B.speed of rotor
  3. C.power generated
  4. D.power factor
43
Different types of insulators used for transmission lines are
  1. A.pin type only
  2. B.suspension type only
  3. C.strain type only
  4. D.pin type, suspension type and shackle type
44
The conductor connecting consumer's terminals to the distributor is called the
  1. A.feeder
  2. B.distributor
  3. C.service main
  4. D.none of the above
45
Which of the following method or techniques can be used for the measurement of high d.c. voltages ?
  1. A.Generating voltmeter
  2. B.Electrostatic voltmeter
  3. C.Peak voltmeter
  4. D.Half effect generators
46
The ripple voltage in dc output is small if
  1. A.frequency of supply voltage is small
  2. B.the filtering capacitor is small
  3. C.load current is small
  4. D.none of these
47
The voltage measurements using uniform spark gap are
  1. A.affected by dust particles
  2. B.affected by polarity of supply
  3. C.affected by temperature
  4. D.none of these
48
Neutral earthing is provided for
  1. A.the safety of personnel from electric shock
  2. B.the safety of equipment and personnel against lightning and voltage surges
  3. C.reducing the voltage stress on lines and equipment with respect to earth under various operating and fault conditions
  4. D.controlling the earth fault currents for protective relaying
  5. E.both (c) and (d)
49
The function of Lightning arrester is
  1. A.to limiting the short - circuit fault current
  2. B.to provide path to high voltage surge to earth
  3. C.to reduce arcing
  4. D.none of these
50
In which of the following cases are delay fuses used ?
  1. A.For the protection of light circuits
  2. B.For the protection of power out - let circuits
  3. C.For the protection of fluorescent lamps
  4. D.For the protection of motors
51
In order to improve the voltage profile of the line, compensation is resorted by providing
  1. A.capacitors at the receiving end
  2. B.reactors at the receiving end
  3. C.resistors at the receiving end
  4. D.none of these
52
Skin effect in conductor is proportional to
  1. A.(diameter of conductor) 1/2
  2. B.diameter of conductor
  3. C.(diameter of conductor)2
  4. D.(diameter of conductor)4
53
The function of steel wire in an ACSR conductor is to
  1. A.compensate for skin effect
  2. B.take care of surges
  3. C.provide additional mechanical strength
  4. D.reduce inductance
54
A fault is more severe from the view point of RRRV if it is a
  1. A.Short length fault
  2. B.Medium length line fault
  3. C.Long length line fault
  4. D.None of these
55
Protective resistance to be connected between the sphere gap and the test equipment is required while measuring
  1. A.power frequency and higher frequency a.c. voltage
  2. B.power frequency and impulse voltage
  3. C.all kinds of voltages
  4. D.none of these
56
Series capacitor is used in a transmission line to
  1. A.compensate the voltage drop
  2. B.reduce line loss
  3. C.limit short circuit current
  4. D.improve load power factor
57
The passive element that is used as interconnecting element for the stable operation of interconnected system is
  1. A.reactor
  2. B.resistor
  3. C.capacitor
  4. D.resistor and capacitor
58
Corona loss in a transmission line is dependent on
  1. A.diameter of the conductor
  2. B.material of the conductor
  3. C.height of the conductor
  4. D.none of these
59
In a minimum oil circuit breaker the oil is used
  1. A.to act as circuit breaking medium only
  2. B.for circuit breaking and providing insulation
  3. C.for providing insulation only
  4. D.for none of the above purposes
60
Skin effect is
  1. A.proportional to frequency
  2. B.proportional to square of frequency
  3. C.inversely proportional to frequency
  4. D.independent of frequency

General Knowledge

1
Yojna a weekly journal
  1. A.Ministry of Finance        
  2. B.Ministry of Information and Broadcastin
  3. C.Ministry of Rural Development
  4. D.Planning Commission
2
Sattriya dance form is famous in which of these states ?
  1. A.Assam
  2. B.Himachal Pradesh
  3. C.Punjab
  4. D.Tamil Nadu
3
When was the Constituent Assembly of India formed?
  1. A.1946
  2. B.1947
  3. C.1948
  4. D.1950
4
Whats the capital city of Gujarat?
  1. A.Ahmedabad
  2. B.Surat
  3. C.Gandhinagar
  4. D.Vadodara
5
Which national parkn Gujarats famous for Asiatic lions?
  1. A.Gir National Park
  2. B.Ranthambore National Park
  3. C.Kanha National Park
  4. D.Bandipur National Park
6
Which river flows through the city of Ahmedabad?
  1. A.Sabarmati
  2. B.Tapi
  3. C.Narmada
  4. D.Mahi
7
Whats the official language of Gujarat?
  1. A.Gujarati
  2. B.Hindi
  3. C.Marathi
  4. D.Konkani
8
Which dance forms native to Gujarat?
  1. A.Garba
  2. B.Bhangra
  3. C.Lavani
  4. D.Kathakali
9
Which is the longest river in India?
  1. A.Yamuna
  2. B.Ganges
  3. C.Brahmaputra
  4. D.Godavari
10
Which country surpassed Japan to become the world's largest creditor nation after 34 years?
  1. A.China
  2. B.Germany
  3. C.United States
  4. D.Switzerland

English

1
I go to Madurai by —– Vaigai Express
  1. A.a
  2. B.an
  3. C.some
  4. D.the
2
Have the car stolen!
  1. A.Steal the car
  2. B.You should have the stolen car
  3. C.Get someone to steal the car
  4. D.They have stolen the car
3
The payment was collected by the hardworking salesman.
  1. A.The hardworking salesman collected the payment.
  2. B.the salesman who worked heard was able to collect the payment.
  3. C.to collect the payment the salesman had to work hard.
  4. D.The hardworking salesman was able to collect the payment.
4
I had to stop all my work to complete this project.
  1. A.All other work had to be stopped to complete this project by me
  2. B.For completing this project all other work must be stopped
  3. C.For completing this project I had to stop all my work
  4. D.To complete this project all other work had been stopped by me
5
They have published the names of all the successful candidates.
  1. A.The candidates who have succeeded their names they had published.
  2. B.The names of all the successful candidates have been published by them
  3. C.The candidates who have succeeded their names have been published by them.
  4. D.The names of all the successful candidate were published by them. 
6
The Finance Department has ……………a centralized online databank system for all statutory government bodies to …………an eye on their assets and liabilities.
  1. A. presented , stay
  2. B.introduced , keep
  3. C.announce , make
  4. D.created , let
  5. E.proclaimed , hold
7
Assets
  1. A.liabilities
  2. B.responsibilities
  3. C.estates
  4. D.profits
8
Affidavit
  1. A. Affirmation
  2. B.Slander
  3. C.Oath
  4. D.Testimony
9
Hollow
  1. A.Alveolate
  2. B.Cleft
  3. C. Cavernous
  4. D.Solid
10
Cosset 
  1. A.Ignoreb
  2. B.Close
  3. C.Caress
  4. D.Fondle

Computer Knowledge

1
Which Windows interface element typically appears to display information, a warning, an error message, or a request for confirmation?
  1. A.Window
  2. B.Pop-up menu
  3. C.Message box
  4. D.Taskbar
2
What is active desktop ?
  1. A.a term that is synonymous with viewing your desktop as web page
  2. B.a feature to customize your desktop to display informating you can update from the internet
  3. C.both a and b above mentioned
  4. D.A software
  5. E.None of these
3
What is meant by an active window?
  1. A.A window that is minimized
  2. B.The window currently receiving user input
  3. C.Any window currently open
  4. D.The window opened first
4
What was America Online (AOL) primarily known for during the early popularization of consumer Internet access?
  1. A.An online service providing Internet access and proprietary online content
  2. B.A computer operating system
  3. C.A spreadsheet application
  4. D.A database management system
5
An application is
  1. A.word processing, accounting and engineering programs are example of application programs
  2. B.computer program designed to enable users to perform specific job functions
  3. C.Both a and b above mentioned
  4. D.a document
  5. E.None of these
6
Which of the following programs enables you to calculate numbers related to rows and columns?
  1. A.Window program
  2. B.Spreadsheet program
  3. C.Graphics program
  4. D.Word program
  5. E.None of these
7
The term Briefcase is used for
  1. A.a special folder on the windows desktop used to keep documents up to date when shared between computers
  2. B.a window that us currently open
  3. C.A folder which keeps deleted, files for a while and can be retrieved from it
  4. D.All of the above
  5. E.None of these
8
In a graphical user interface, what is a button primarily used for?
  1. A.Executing a command or initiating an action
  2. B.Permanently storing data
  3. C.Displaying the computer's IP address
  4. D.Formatting a disk automatically
9
A channel (in windows terminology) is
  1. A.a widely used online service that offers access to the internet
  2. B.a specialized web site designed to work with the windows 98 subscribing feature to automatically download information from the internet and store it on your computer for later viewing
  3. C.an area on the computer memory where text or graphics can be temporarily stored
  4. D.All of the above
  5. E.None of these
10
What does a checked checkbox generally indicate in a graphical user interface?
  1. A.The associated option is enabled or selected
  2. B.The application has closed
  3. C.The file has been deleted
  4. D.The computer is offline

Gujarati Language & Grammar

1
"શાંતિ" શબ્દનો અર્થ શું છે ?
  1. A. વાતચીત
  2. B. આક્રમણ
  3. C. ખેડૂત
  4. D. ધમાધમ
2
"વ્યક્તિ" શબ્દનો વિલોમ શબ્દ શું છે ?
  1. A. સંગઠન
  2. B. વ્યવસ્થા
  3. C. સંવિદાન
  4. D. અનવરત
3
"વિકાસ" શબ્દનું અર્થ શું છે ?
  1. A. અભિવૃદ્ધિ
  2. B. વિઘટન
  3. C. વિદ્યા
  4. D. આકર્ષણ
4
"સ્થાન" શબ્દનું વિરોધી શબ્દ શું છે ?
  1. A. ધૂપ
  2. B. દૂર
  3. C. જગ્યા
  4. D. આવેશ
5
"મંજિલ" શબ્દનો વ્યાપારિક અર્થ શું છે ?
  1. A. ગોલ
  2. B. ધબ્બુ
  3. C. સાંજ
  4. D. ઉદ્દેશ
6
"ખેડૂત" શબ્દનો પર્યાય શબ્દ શું છે ?
  1. A. માલી
  2. B. દરજી
  3. C. બનિયાં
  4. D. પ્રશાસન
7
"સંગઠન" શબ્દનું અર્થ શું છે ?
  1. A. સમૂહ
  2. B. છૂટ
  3. C. સામર્થ્ય
  4. D. સમય
8
"વ્યાયામ" શબ્દનું પર્યાય શબ્દ શું છે ?
  1. A. વ્યવસાય
  2. B. શિક્ષણ
  3. C. સત્સંગ
  4. D. પ્રવૃત્તિ
9
"મંથન" શબ્દનું અર્થ શું છે ?
  1. A. ખોરાક
  2. B. ગોળા
  3. C. સંયોજન
  4. D. છડાન
10
"અભિગમ" શબ્દનું પર્યાય શબ્દ શું છે ?
  1. A. પાડો
  2. B. મીત્ર
  3. C. નજીક
  4. D. આગમ
Question for GSECL Vidyut Sahayak (Plant Attendant) Electrical 2026 - Quiz / Questions / MCQ - Toppersexam