Power Systems
A sort line with R/X ratio 1, the zero regulation is obtained when the power factor of the load is

 0 leading
 0.5
 0.707 leading
 unity

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Power Systems
Advantages of shunt compensation is/are

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

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