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Power Systems

Power Systems
Surge impedance loading (SIL) is represented by

 Vl²/Zs
 both 1 and 2
 Vl²*√(C/L)
 Vph²/Zs

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Power Systems
More efficient plants are used as

 peak load plant
None of these
 both 1 and 2
 base load plant

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Power Systems
A fault occurring at the terminals of an unloaded synchronous generator operating at its rated voltage has resulted in the following values of currents and voltages. IR0 = j 2.37 pu IR1 = -j 3.05 pu IR2 = j 0.68 pu VR0 = VR1 = VR2 = 0.237 pu. Which of the following faults has occurred?

 LLG
 LLL
 LL
 LG

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Power Systems
Pumped storage plant is a

 base load plant
 peak load plant
None of these
 both 1 and 2

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Power Systems
Resistance switching in normally employed in

 minimum oil breakers.
  air blast circuit breaker.
 all breakers.
 bulk oil breakers.

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Power Systems
For 132 kV system, the reactance and capacitance up to the location of the CB is 3 Ω and 0.015 μF respectively. The maximum value of RRRV is

 2.0 kV / μs.
 12.2 kV / μs.
 10.01 kV / μs.
  9.01 kV / μs.

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