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Power Systems

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

 average
 any of the above
 RMS
 peak value

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Power Systems
A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. Find the surge impedance loading with compensation?

 386 MW
 400 MW
 478 MW
 456 MW

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Power Systems
A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the reflected voltage?

 -81.82 kV
 -18.18 kV
 81.82 kV
 18.18 kV

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Power Systems
Peak load power plants is/are

 diesel plant
 nuclear plants
 both 1 and 2
 pumped storage plant

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Power Systems
The conductor carries more current on surface as compared to core. This is called as

 skin effect
 corona effect
 unsymmetrical fault
All of these

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Power Systems
In a short circuit test circuit breaker, time to reach the peak re-striking voltage 60 microsecond & the peak re-striking voltage 120 kV. Determine average RRRV (Rate of rise re-striking voltage)?

 1 × 106 kV / sec.
  2 × 106 kV / sec.
  3 × 106 kV / sec.
 3.5 × 106 kV / sec.

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