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Power Systems

Power Systems
For load flow studies, What are the quantities specified at load bus are

 P and V
 P and Q
 δ and Q
 V and δ

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Power Systems
Advantage/s of per unit system as compare to absolute system?

 memory required is less
 calculation time is less
 only one equation is required
All of these

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Power Systems
Pumped storage plant is a

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

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Power Systems
What is the approximate efficiency of a normal thermal power station?

 45-55%
 20-25%
 30-40%
 60-70%

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Power Systems
A 3-phase breaker is rated at 2000 MVA, 33 kV, its making current will be

  89.22 kVA.
 49 kVA.
  35 kVA.
 70 kVA.

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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?

 456 MW
 386 MW
 400 MW
 478 MW

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