High Voltage Engineering MCQ Test

  1. Polar dielectrics are normally used for _____.
  2. What do you mean by Polar dielectrics?
  3. Which one of the following is a polar dielectric ?
  4. What is non-Ploar dielectric?
  5. Which one of the following is a non-polar dielectric ?
  6. The impurity in liquid dielectric which has significant effect in reducing the breakdown strength, is ____.
  7. The relationship between the breakdown voltage V and gap d is normally given as ______.
  8. Which one is the not a property of a good dielectric?
  9. What do you mean by Tesla coil?
  10. The ideal lightning arrester is the one which:
  11. What is the use of Lightning arresters?
  12. The necessary condition for performing sphere gap test is:
  13. The generating voltmeter is driven by ______________ which _____________ energy from measuring source:
  14. Void discharges are classified as:
High Voltage Engineering MCQ

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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 frequencies
  • microwaves
  • dc and power frequencies
  • None of the above
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  • The dielectric materials which have permanent electric dipoles moment ‘p’.
  • Non-Polar Electric
  • Polystyrene
  • None of the above
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  • Ploar Electric
  • The electric materials which don’t have permanent dipole moments.
  • Polar dielectric
  • None of the above
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  • Polystyrene
  • Phenolic plastics
  • Plasticized cellulose acetate
  • Castor oil
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  • high mechanical strength (B) (C) (D)
  • freedom from gaseous inclusions
  • high dielectric loss
  • high resistance to thermal deterioration
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  • a radio frequency oscillator
  • cascaded transformer
  • coreless transformer
  • None of the above
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  • Stops the flow of electric current above rated voltage
  • Conducts electric current above rated voltage
  • non Polar
  • None of the above
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  • It protect electrical equipment against. direct strokes of lightning
  • half-wave rectifier
  • close circuit
  • None of the above
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  • should be between 0.7 μs and 0.8 μs
  • The length of gap should be smaller than radius of sphere
  • The length of gap should be 4 times greater than radius of sphere
  • An impulse wave of 50000 kV should be applied Wave front time
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  • Constant speed motor, absorbs
  • Variable speed motor, doesn’t absorb
  • Constant speed motor, doesn’t absorb
  • Variable speed motor, absorbs
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  • External partial discharges
  • Internal partial discharges
  • Anode
  • None of these
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  • blotting paper
  • rice paper
  • craft paper
  • mill-board
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  • Very high voltage and low current applications
  • Very high voltage and high current applications
  • High voltage pulses only
  • Constant high voltage and current applications
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  • Humidity is minimum for uniform field gaps
  • Humidity effect decreases with the size of spheres
  • decreases with the partial pressure of water vapour in air
  • Increases with humidity
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  • Low impedance device
  • Relay coil
  • Both A and B
  • High impedance device
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