Power Systems
An ACSR conductor has a diameter of 2 cm has internal inductance of 0.05 mH/Km. If this ACSR is replaced with another having a diameter of 4 cm then its internal inductance is

 0.1 mH/Km
 0.025 mH/Km
 0 mH/Km
 0.05 mH/Km

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Power Systems
Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation?

 smooth voltage regulation is possible by controlling excitation
 single unit can be used as both capacitance and inductor by adjusting the excitation
 both 1 and 2
 initial cost is low

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