Power Systems
For 800 MJ stored energy in the rotor at synchronous speed, what is the inertia constant H for a 50 Hz, four pole turbo generator rated 100 MVA, 11 kV?

 4 MJ/MVA
 6 MJ/MVA
 8 MJ/MVA
 2 MJ/MVA

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Power Systems
Advantages of shunt compensation is/are

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

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