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Question Bank

WBPDCL Assistant Manager Electrical Exam - English

Duration: 120 · Questions: 100 · Max Marks: 100 · Language: 1

View WBPDCL Assistant Manager (Electrical) 2026 Exam Page

General Aptitude (English, Quantitative Aptitude, Logical Reasoning & Data Interpretation)

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
Kurukshetra a journal on rural development is published by
  1. A.Ministry of Finance 
  2. B.Ministry of Information and Broadcastin
  3. C.Ministry of Rural Development
  4. D.Planning Commission
3
Devaluation of a currency means
  1. A.Fixing the value of the currency in conjuction with the movement in the value of a basket of predetermined currencies
  2. B.Reduction in the value of a currency vis-à-vis major internationally traded currencies
  3. C.Fixing the value of currency in multilateral consultaion with the IMF the World Bank and major trading partners
  4. D.Permitting the currency to seek its worth in the international market
4
In India rural incomes are generally lower than the urban incomes, which of the following reasons account for this
            1. a large number of farmers are illiterate and know little about scientific agriculture
            2. prices of primary products are lower than those of manufactured products
            3. Investments in agriculture has been low when compared to investment in industry
  1. A.1 and 3
  2. B.2 and 3
  3. C.1 and 2
  4. D.1,2 and 3
5
Which of the following programmes aims at the promotion of savings among rural women
  1. A.Rashtriya Mahila Kosh
  2. B.Indira Mahila Yojna
  3. C.Jawahar Rozgar Yojna
  4. D.Mahila Samridhi Yojna
6
I go to Madurai by —– Vaigai Express
  1. A.a
  2. B.an
  3. C.some
  4. D.the
7
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
8
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?
  1. A.Two
  2. B.Three
  3. C.Five
  4. D.Four
  5. E.None of these
9
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
  1. A.True
  2. B.False
  3. C.Uncertain
  4. D.None
10
The first Metro Railway Service in Kolkata began in the year
  1. A.1984
  2. B.1981
  3. C.1975
  4. D.1979
11
Kolkata - Mumbai National Highway via Agra is known as
  1. A.NH-5
  2. B.NH-8
  3. C.NH-3
  4. D.NH-6
12
Bongaon and Kolkata is connected by
  1. A.NH-35
  2. B.NH-02
  3. C.NH-06
  4. D.NH-32
13
The headquarter of the Eastern Railway is located at
  1. A.Ranchi
  2. B.Kharagpur
  3. C.Dispur
  4. D.Kolkata
14
Which is the longest national highway in India ?
  1. A.NH-27
  2. B.NH-30
  3. C.NH-44
  4. D.NH-53
15
What is the lithosphere composed of ?
  1. A.Water and gases
  2. B.Rocks and minerals
  3. C.Living organisms
  4. D.Air and gases
16
The lithosphere includes :
  1. A.Only the Earth's crust
  2. B.The Earth's crust and upper mantle
  3. C.Only the Earth's mantle
  4. D.The Earth's crust, mantle, and core
17
Which ministry launched the e-SHRAM portal to register unorganized workers in India?
  1. A.Ministry of Labour and Employment
  2. B.Ministry of Finance
  3. C.Ministry of Social Justice and Empowerment
  4. D.Ministry of Home Affairs
18
What is the primary objective of the ‘BioE3 Policy’ approved by the Union Cabinet?
  1. A.Foster high-performance biomanufacturing
  2. B.Promote traditional farming practices
  3. C.Increase coal production
  4. D.Enhance organic farming

Professional Knowledge

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 Zener regulator has an input voltage varying between 20 V and 30 V. The desired regulated voltage is 12 V, while the load varies between 140  and 10k  The maximum resistance in series with the unregulated source and Zener diode would be
  1. A.3.3
  2. B.6.6
  3. C.36.6
  4. D.93.3
7
A short in any type of circuit (series, parallel or combination) causes the total circuit
1. resistance to decrease
2. power to decreases
3. current to increase
Which of the above are correct?
  1. A.2  and 3 
  2. B.2 and 4
  3. C.1 and 4 
  4. D.1 and 3 
8
An air-cored solenoid of 250 turns has a cross-sectional area A = 80 cm2 and length l = 100 cm. The value of its inductance is
  1. A.0.425 mH          
  2. B.0.628 mH
  3. C.0.751 mH 
  4. D.0.904 mH
9
The current in a coil changes uniformly from 10 A to 1 A in half a second. A voltmeter connected across the coil gives a reading of 36 V. The self-inductance of the coil is
  1. A.0.5 H 
  2. B.1 H
  3. C.2 H       
  4. D.4 H 
10
In a mutually coupled circuit, the primary current is reduced from 4A to zero in 10 s.  A voltage of 40000 V is observed across the secondary. The mutual inductance between the coils is
  1. A.100 H 
  2. B.10 H
  3. C.0.1 H 
  4. D.0.01 H 
11
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 
12
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
13
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
14
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 
15
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 
16
A clamper circuit
1. Adds or subtracts a dc voltage to or from a waveform
2. Does not change the shape of the waveform
Which of the above statements are correct? 
  1. A.1 only 
  2. B.2 only 
  3. C.Both 1 and 2 
  4. D.Neither 1 nor 2 
17
If a carrier of 100% modulated AM is suppressed before transmission, the power saving is nearly
  1. A.50% 
  2. B.67%
  3. C.100% 
  4. D.125%
18
When the modulating frequency is doubled the modulation index is halved and the modulating voltage remains constant. This happens when the modulating system is
  1. A.AM 
  2. B.PM
  3. C.FM       
  4. D.Delta Modulation
19
The four basic elements in a PLL are loop filter, loop amplifier, VCO and
  1. A.Up converter
  2. B.Down converter
  3. C.Phase detector
  4. D.Frequency multiplier
20
In a frequency modulated (FM) system, when the audio frequency is 500 Hz and audio frequency voltage is 2.4 V, the frequency deviation is 4.8 kHz. If the audio frequency voltage is now increased to 7.2 V then what is the new value of deviation?
  1. A.0.6 kHz 
  2. B.3.6 kHz
  3. C.12.4 kHz 
  4. D.14.4 kHz
21
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
22
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
23
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 
24
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
25
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
26
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 : 
  1. A.2, 5, 1, 3 and 4 
  2. B.4, 5, 3, 1 and 2 
  3. C.2, 3, 1, 5 and 4 
  4. D.4, 5, 1, 3 and 2
27
In the first Cauer network, with a pole at infinity, the first element must be
  1. A.Series capacitor 
  2. B.Series inductor 
  3. C.Shunt capacitor 
  4. D.Shunt inductor
28
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 ? 
  1. A.1 only 
  2. B.2 only 
  3. C.Both 1 and 2 
  4. D.Neither 1 nor 2
29
Susceptibility of a diamagnetic material is 1. Negative
2. Positive
3. Dependent on the temperature
4. Independent of the temperature 
  1. A.1 and 2 only 
  2. B.1 and 3 only 
  3. C.2 and 3 only      
  4. D.1, 2 and 3
30
Superconductivity is a material property associated with 
  1. A.Changing shape by stretching 
  2. B.Stretching without breaking 
  3. C.A loss of thermal resistance 
  4. D.A loss of electrical resistance
31
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
32
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
33
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
34
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
35
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
36
An electrical breakdown of a p-n junction occurs if
  1. A.Forward voltage increases up to the rating
  2. B.Reverse voltage increases beyond the rating
  3. C.Forward voltage decreases below the rating
  4. D.Reverse voltage decreases below the rating
37
The chief deterrent to the widespread application of superconducting materials is
  1. A.Very difficult to form, machine or case
  2. B.The difficult in attaining and maintaining extremely low temperature
  3. C.The poor strength-to-weight ratio
  4. D.The lower oxidation rate at elevated temperatures
38
Which one of the following properties is not observed in the carbon nanotubes ?
  1. A.High stiffness and strengths
  2. B.Low densities
  3. C.Unusual electrical property
  4. D.Non-ductile
39
The evidence for the importance of electron-phonon interaction in super-conductors comes from
  1. A.Meissner effect
  2. B.Josephson effect
  3. C.Isotope effect
  4. D.x quantization experiments
40
Which one of the following materials is used for cable insulation ?
  1. A.Phenol formaldehyde
  2. B.Polytetrafluoroethylene
  3. C.Polyvinyl chloride
  4. D.Acrylonitrile butadiene styrene
41
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
42
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
43
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
44
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
45
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
46
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
47
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
48
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
49
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
50
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
51
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
52
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
53
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
54
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
55
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
56
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
57
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
58
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
59
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
60
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
61
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
62
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
63
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
64
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
65
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
66
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
67
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
68
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)
69
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
70
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

Bengali

1
সঠিক বাক্যটি সনাক্ত করুন:
  1. A. তিনি সাবলীলভাবে ইংরেজি বলতে পারেন
  2. B. তিনি সাবলীলভাবে ইংরেজি বলতে পারেন
  3. C. তিনি সাবলীলভাবে ইংরেজি বলতে পারেন
  4. D. তিনি সাবলীলভাবে ইংরেজি বলতে পারেন
2
ক্রিয়াটির সঠিক অতীত ফর্মটি চয়ন করুন:
  1. A. তিনি গতকাল স্কুলে যান।
  2. B. তিনি গতকাল স্কুলে গিয়েছিলেন।
  3. C. তিনি গতকাল স্কুলে যান।
  4. D. তিনি গতকাল স্কুলে যাচ্ছেন।
3
"শুভ" এর সঠিক প্রতিশব্দ নির্বাচন করুন:
  1. A. আনন্দদায়ক
  2. B. দু: খিত
  3. C. চিন্তিত
  4. D. রাগান্বিত
4
বিশেষণটি চিহ্নিত করুন) বাক্যটিতে: তিনি শিশুর সাথে মৃদু কথা বলেছেন।
  1. A. কথা বলেছেন
  2. B. মৃদুভাবে
  3. C. বাচ্চা
  4. D. তিনি
5
কোন বাক্যটি ব্যাকরণগতভাবে সঠিক?
  1. A. কুকুর এটি লেজ তাড়া করে
  2. B. কুকুরটি তার লেজ তাড়া করেছে
  3. C. কুকুর তা তাড়া করে
  4. D. কুকুরটি তার লেজ তাড়া করে
6
"শিশু" এর সঠিক বহুবচন ফর্মটি চয়ন করুন:
  1. A. বাচ্চারা
  2. B. চাইল্ডস
  3. C. বাচ্চারা
  4. D. চাইল্ডেন
7
"সাহসী" এর সঠিক প্রতিশব্দটি চয়ন করুন:
  1. A. নির্ভীক
  2. B. সাহসী
  3. C. কাপুরুষোচিত
  4. D. সাহসী
8
সঠিক বাক্যটি সনাক্ত করুন:
  1. A. তিনি চা পছন্দ করেন না
  2. B. সে চা পছন্দ করে না
  3. C. তিনি চা পছন্দ করেন নি
  4. D. সে চা পছন্দ করে না
9
তিনি আগ্রহী ___ নতুন ভাষা শেখা।
  1. A. ইন
  2. B. চালু
  3. C. এর
  4. D. থেকে
10
নিম্নলিখিতগুলির মধ্যে কোনটি সংমিশ্রণ?
  1. A. দ্রুত
  2. B. এবং
  3. C. বাড়ি
  4. D. সুখ