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Power Systems

Power Systems
Which turbine is ideally suited to pumped storage plants

  Kaplan.
 Francis.
 Impeller.
 Pelton.

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Power Systems
Under excited Synchronous phase modifier works as

 shunt capacitor
 series capacitor
 any of the above
 shunt reactor

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Power Systems
The ground capacitance existing between transmission line and ground is 4µF. Find the inductive reactance of the peterson coil for compensation of arcing grounds?

 855.26 Ω
 0.844 Ω
 625.35 Ω
 265.25 Ω

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Power Systems
The load current in short circuit calculations are neglected because

 short circuit currents are much larger than load currents
 short circuit currents are greatly out of phase with load currents
 nether 1 nor 2
 both 1 and 2

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Power Systems
Range of accelerating factor is

 1 to 10
 10.8 to 11.2
 50 to 100
 1.6 to 1.8

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Power Systems
Advantages of per unit system is/are

 No units for any quantity
All of these
 Need of transformation ratio
 It has units for all quantities

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