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Power Systems

Power Systems
Surge impedance loading (SIL) is represented by

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

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Power Systems
Capacitance voltage transformer ( CVT ) is used to

  improve the power factor of the transmission.
 reduce losses in a transmission line.
 none of these.
 connect instruments on the LT side.

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Power Systems
The value of diversity factor is

 1
 greater than 1
 less than 1
 0

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Power Systems
What is the preferred type of circuit breaker(CB) to be installed in extra high voltage AC system?

 Air blast CB
 Vacuum CB
 Sulphur hexafluoride CB
 Bulk oil type CB

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Power Systems
Incremental cost of two generators Ic1 = 0.2 P1+60, Ic2 = 0.3 P2+40 and the ratings of the generator are 150 and 250 MW. Find the load sharing of each generator for a load of 200 MW?

 P1 = 80 MW, P2 = 120 MW
 P1 = 60 MW, P2 = 140 MW
 P1 = 100 MW, P2 = 100 MW
 P1 = 120 MW, P2 = 80 MW

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Power Systems
Demand factor of a plant is

 1
 greater than 1
 less than 1
 0

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