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Power Systems

Power Systems
Operating time of pumped storage plant is

 very high
 low
 high
 can't say

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Power Systems
Which of the following is not base load power plant

  Pump storage.
  Nuclear.
  Run water.
  Diesel.

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Power Systems
Making current is a------------ value?

 peak value
 average
 RMS
 any of the above

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Power Systems
The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase?

 0.93
 1.13
 0.882
 1

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Power Systems
The insulation of the modern EHV lines is designed based on

 R × I.
  the switch voltage.
 the lighting voltage.
 corona.

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Power Systems
Which of the following is/are the desirable properties of a insulator material?

 Both 1 and 2
 High ratio of puncture strength to flash over.
 Low ratio of puncture strength to flash over.
 High relative permittivity

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