Download AppGovt. JobsFree G.K. & Current AffairsScholarshipBlog
Free PracticeContact
📚 Exam by Category
▾
Objective Questions

Latest PSPCL JE Electrical Exam Question (Objective Questions), MCQ in English

Subjects : Professional Knowledge (Electrical), Punjabi Language Knowledge, General Knowledge, Reasoning, General English

Question Bank PSPCL JE Electrical Exam - English
Back to Exam

Professional Knowledge (Electrical)

Question 1Single Answer
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
Question 2Single Answer
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 
Question 3Single Answer
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
Question 4Single Answer
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
Question 5Single Answer
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
Question 6Single 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
  1. A
    0.8 Ω
  2. B
    1.4 Ω
  3. C
    2 Ω
  4. D
    2.8 Ω
Question 7Single 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?
  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
Question 8Single 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?
  1. A
    9.2 × 105/m3
  2. B
    2.77 × 103/m3
  3. C
    2.43 × 1019/m3
  4. D
    8.9 × 1012/m3
Question 9Single Answer
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
Question 10Single 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
  1. A
    Parallel polarized
  2. B
    Perpendicularly polarized
  3. C
    Normally polarized
  4. D
    None of the above
Question 11Single Answer
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
Question 12Single Answer
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
Question 13Single Answer
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
Question 14Single Answer
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
Question 15Single Answer
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
Question 16Single Answer
For high speed reading and storing of information in a computer, the material used is
  1. A
    Ferrite
  2. B
    Piezoelectric
  3. C
    Pyroelectric
  4. D
    Ferromagnetic above 768°C
Question 17Single Answer
The temperature above which an anti-ferromagnetic material becomes paramagnetic is called
  1. A
    Peak temperature
  2. B
    Neel temperatur
  3. C
    Critical temperature
  4. D
    Weiss temperature
Question 18Single Answer
Which effect is the converse of Peltier effect ?
  1. A
    Seeback effect
  2. B
    Thomson effect
  3. C
    Hall effect
  4. D
    Joule effect
Question 19Single Answer
Magnetic materials which may be readily magnetized in either direction are
  1. A
    Soft magnetic materials
  2. B
    Hard magnetic materials
  3. C
    High eddy current loss materials
  4. D
    High hysteresis loss materials
Question 20Single Answer
Consider the following statements regarding a ferromagnetic material:
1.Below the ferromagnetic Curie temperature, the ferromagnetic materials exhibit hysteresis effect.
2.The coercive force is the filed required to reduce the flux density to zero. 
Which of the above statements is/are correct?
  1. A
    Both 1 and 2
  2. B
    Neither 1 nor 2
  3. C
    1 only
  4. D
    2 only
Question 21Single Answer
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
Question 22Single Answer
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
Question 23Single Answer
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
Question 24Single Answer
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
Question 25Single Answer
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
Question 26Single Answer
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
Question 27Single Answer
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
Question 28Single Answer
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
Question 29Single Answer
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
Question 30Single Answer
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
Question 31Single Answer
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
Question 32Single Answer
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
Question 33Single 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
  1. A
    0.75
  2. B
    0.375
  3. C
    1.33
  4. D
    None of these
Question 34Single Answer
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
Question 35Single Answer
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
Question 36Single Answer
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
Question 37Single Answer
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
Question 38Single Answer
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
Question 39Single Answer
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
Question 40Single Answer
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
Question 41Single Answer
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
Question 42Single Answer
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
Question 43Single Answer
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
Question 44Single Answer
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
Question 45Single Answer
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
Question 46Single Answer
The total unit weight of the glacial outwash soil is 5 kN / m3 The water content in the soil is 17% Find dry unit weight :
  1. A
    4.27 kN / m3
  2. B
    0.29 kN / m3
  3. C
    3.40 kN / m3
  4. D
    6.27 kN / m3
Question 47Single Answer
A rectangular channel of bed width 2 m is to be laid at a bed slope of 1 in 1000. Find the hydraulic radius of the canal cross - section for the maximum discharge condition ? Take Chery's constant as 50 :
  1. A
    2 m
  2. B
    1 m
  3. C
    0.5 m
  4. D
    0.25 m
Question 48Single Answer
A square footing for a column carries a total load (including the self - weight of footing) of 1760 kN. The safe bearing capacity of soil is 200 kN / m3. Using M20 grade concrete and Fe415 steel, the area of footing (rounded to the nearest integer) will be :
  1. A
    9 m2
  2. B
    16 m2
  3. C
    2 m2
  4. D
    25 m2
Question 49Single Answer
In a standard penetration test, what is the weight of the hammer and the dropping height used as per IS 2131 – 1981 ?
  1. A
    2.6 kg, 310 mm
  2. B
    63.5 kg, 450 mm
  3. C
    4.89 kg, 450 mm
  4. D
    63.4 kg, 750 mm
Question 50Single Answer
A cantilever beam of span L carries a uniformly distributed load of W kN / unit length. What is the maximum deflection occurring in the beam ? (Take E as the modulus of elasticity and I as the moment of inertia of thebeam section)
  1. A
    wL4 / 8EI
  2. B
    wL3 / 6EI
  3. C
    wL3 / 48EI
  4. D
    wL2 / 8EI
Important Questions Package

PSPCL JE Electrical Exam Online Question Bank Package

Buy PSPCL JE Electrical Important Questions, MCQ, question answer in Hindi & English. It will help you to score high marks in PSPCL JE Electrical question bank 2026 in Online, PDF & Print study material.

+ Free Monthly Current Affairs, GK & more PDF Download
Sr.Package NameAmount
1.PSPCL JE Electrical Exam - English
Description : 1000 Question with Answer
₹101 [₹500]
2.PSPCL JE Electrical Exam - English
Description : 2000 Question with Answer
₹151 [₹500]
3.PSPCL JE Electrical Exam - English
Description : 3000 Question with Answer
₹181 [₹500]
4.PSPCL JE Electrical Exam - English
Description : 4000 Question with Answer
₹201 [₹500]
5.PSPCL JE Electrical Exam - English
Description : 1000 Question & Answer Download in PDF (Send by Email)
₹151 [₹450]
6.PSPCL JE Electrical Exam Question Bank Book - English
Description : 1000 Question with Answer (Printed Material)
₹390 [₹600]
7.PSPCL JE Electrical Exam - English (Old)
Description : 3000 Question with Answer.
₹181 [₹500]
Back to Exam