High Voltage Engineering MCQ

High Voltage Engineering MCQ

  • Admin
  • 17th Feb, 2023

Take High Voltage Engineering MCQ Test & Online Quiz to Test Your Knowledge

We have listed below the best High Voltage Engineering MCQ Questions that check your basic knowledge of High Voltage Engineering. This High Voltage Engineering MCQ Test contains 25 very important Multiple Choice Questions. You have to select the right option for every question to check your final preparation. Apart from this, you can also download below the High Voltage Engineering MCQ PDF Completely free.

High Voltage Engineering MCQ Test

1) Polar dielectrics are normally used for _____.

  • A. high frequencies
  • B.microwaves
  • C.dc and power frequencies
  • D.None of the above

2) What do you mean by Polar dielectrics?

  • A. The dielectric materials which have permanent electric dipoles moment ‘p’.
  • B.Non-Polar Electric
  • C.Polystyrene
  • D.None of the above

3) Which one of the following is a polar dielectric ?

  • A. Teflon
  • B.Polyethylene
  • C.Nylon
  • D.Quartz

4) What is non-Ploar dielectric?

  • A. Ploar Electric
  • B.The electric materials which don’t have permanent dipole moments.
  • C.Polar dielectric
  • D.None of the above

5) Which one of the following is a non-polar dielectric ?

  • A. Polystyrene
  • B.Phenolic plastics
  • C.Plasticized cellulose acetate
  • D.Castor oil

6) The impurity in liquid dielectric which has significant effect in reducing the breakdown strength, is ____.

  • A. dust
  • B.ionic impurities
  • C.moisture
  • D.dissolved gases

7) The relationship between the breakdown voltage V and gap d is normally given as ______.

  • A. v = kd^n
  • B.V = kd
  • C.d=kV^3
  • D.kV^2

8) Which one is the not a property of a good dielectric?

  • A. high mechanical strength (B) (C) (D)
  • B.freedom from gaseous inclusions
  • C.high dielectric loss
  • D.high resistance to thermal deterioration

9) What do you mean by Tesla coil?

  • A. a radio frequency oscillator
  • B.cascaded transformer
  • C.coreless transformer
  • D.None of the above

10) The ideal lightning arrester is the one which:

  • A. Stops the flow of electric current above rated voltage
  • B.Conducts electric current above rated voltage
  • C.non Polar
  • D.None of the above

11) What is the use of Lightning arresters?

  • A. It protect electrical equipment against. direct strokes of lightning
  • B.half-wave rectifier
  • C.close circuit
  • D.None of the above

12) The necessary condition for performing sphere gap test is:

  • A. should be between 0.7 μs and 0.8 μs
  • B.The length of gap should be smaller than radius of sphere
  • C.The length of gap should be 4 times greater than radius of sphere
  • D.An impulse wave of 50000 kV should be applied Wave front time

13) The generating voltmeter is driven by ______________ which _____________ energy from measuring source:

  • A. Constant speed motor, absorbs
  • B.Variable speed motor, doesn’t absorb
  • C.Constant speed motor, doesn’t absorb
  • D.Variable speed motor, absorbs

14) Void discharges are classified as:

  • A. External partial discharges
  • B.Internal partial discharges
  • C.Anode
  • D.None of these

15) Matched lines has no reflection.

  • A. True
  • B.False

16) Which variety of paper used for insulation purpose?

  • A. blotting paper
  • B.rice paper
  • C.craft paper
  • D.mill-board

17) Van de Graaff generators are useful for _____.

  • A. Very high voltage and low current applications
  • B.Very high voltage and high current applications
  • C.High voltage pulses only
  • D.Constant high voltage and current applications

18) For the measurement of radio interference voltages, the detector circuit is provided with a measuring device to measure:

  • A. Quasi-peak value
  • B.Peak value
  • C.Average value
  • D.All of the above

19) The sparkover voltage _____.

  • A. Humidity is minimum for uniform field gaps
  • B.Humidity effect decreases with the size of spheres
  • C.decreases with the partial pressure of water vapour in air
  • D.Increases with humidity

20) A Capacitance Voltage Transformer can be connected to a - Published on 21 Dec 15 a. b. c. d.

  • A. Low impedance device
  • B.Relay coil
  • C.Both A and B
  • D.High impedance device

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