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Power Systems

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

 δ and Q
 P and Q
 P and V
 V and δ

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Power Systems
A power generating station has a maximum demand of 1000 MW. The annual load factor is 75% and plant capacity factor is 60%. Calculate the reserve capacity?

 250 MW
 750 MW
 500 MW
 1250 MW

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Power Systems
A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead

 -10%
 6.92%
 -6.92%
 10%

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Power Systems
Pumped storage plant is a

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

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Power Systems
A guard ring is used in string type insulator having 3 units to improve string efficiency. Find the capacitance of metal link 2 if pin to earth capacitance of each unit is 1 F?

 1 F
 2 F
 0.5 F
 4 F

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Power Systems
Water hamming process in pen-stocks results in

None of these
  noise increases, pressure increases, velocity decreases.
  pressure increases.
  noise increases.

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