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Power Systems

Power Systems
Uses of diesel power stations

  peak load plant.
 standby plants.
  emergency plants.
All of these

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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
 478 MW
 456 MW
 400 MW

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Power Systems
In which of the following given faults, all the sequence currents are equal?

 LLL
 LL
 LG
 LLG

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Power Systems
The main advantage of the Decoupled Load Flow (DLF) as compared to the NR method is

All of these
 accuracy is more
 number of iterations are less
 reduced memory requirements in storing the Jacobian elements

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Power Systems
For loss less line, find the ratio of length to the wave length of a signal for a phase shift of 0.05 radians?

 7.95 × 10-3
 2 × 10-3
 7.95 × 10³
 8 × 10³

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Power Systems
A transmission line is compensated with shunt capacitance Csh. After shunt compensation surge impedance loading will

None of these
 decreases
 increases
 remains unaffected

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