Power Systems
Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be

 0.45 pu
 0.15 pu
 0.25 pu
 0.05 pu

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Power Systems
Advantages of shunt compensation is/are

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

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