By: Prof. Dr. Fazal Rehman | Last updated: March 3, 2022
MCQs High Voltage Engineering
1. Dielectric strength in case of mica can be expected to be more thanA. 500 kV/mmB. 1500 kV/mmC. 2500 kV/mmD. 3500 kV/mm.E. None of the above
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A
2. Which of the following method or technique can be used for the measurement of high dc voltages ?A. Peak voltmeter B. Electrostatic voltmeter C. Generating voltmeter D. Any of the aboveE. None of the above
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C
3.All of the following dielectric materials are preferred for high frequency applications EXCEPTA. PolyethyleneB. Butyl rubberC. TeflonD. Polystyrene. E. None of the above
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B
4.Surge diverters areA. Non-linear resistors in series with spark gaps which act as fast switchesB. Arc quenching devicesC. Shunt reactors to limit the voltage rise due to Ferranti effectD. Over-voltages of power frequency harmonicsE. All of the above
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A
5. Polar dielectrics are normally used forA. High frequenciesB. MicrowavesC. Dc and power frequenciesD. All of the aboveE. None of the above
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C
6. Impulse voltages are characterized byA. PolarityB. Peak valueC. Time of half the peak valueD. All of the aboveE. None of the above
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E
7. In design which of the following design is not included?A. Features of shapeB. Mode or principle of constructionC. Composition of lines or coloursD. All of the aboveE. None of the above
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C
8.Which agreement is enforceable by law?A. Valid agreementB. Void agreementC. Illegal agreementD. Unenforceable agreementE. None of the above
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A
9. Which of the following is a polar dielectric ?A. TeflonB. QuartzC. NylonD. PolyethyleneE. None of the above
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C
10. The impurity in liquid dielectric which has significant effect in reducing the breakdown strength, isA. DustB. Dissolved gasesC. MoistureD. Ionic impuritiesE. None of the above
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C
11.Corona effect can be identified byA. Bushy sparksB. Faint violet glowC. Red lightD. Arcing between conductors and earthE. None of the above
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B
12. A Tesla coil is aA. Cascaded transformerB. Coreless transformerC. High frequency resonant transformerD. Low impedance transformer