Power Systems
A 200 MVA alternator operated at no load at frequency of 50 Hz, it has inertia constant of 5 MWsec/MVA and governing system has a time delay of 0.6 sec. If the load of 50 MW is suddenly applied then find the frequency deviation during this time?

 0.85 Hz
 0.76 Hz
 -0.85 Hz
 -0.76 Hz

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Power Systems
Advantages of shunt compensation is/are

 smooth voltage regulation is possible by controlling excitation
 single unit can be used as both capacitance and inductor by adjusting the excitation
All of these
 It requires less maintanance

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Power Systems
In hydroelectric power plants

  operating cost is low and initial cost is high.
 both operating and initial cost are high.
 both operating and initial cost are low.
 operating cost is high and initial cost is low.

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