Power Systems
The VSWR of transmission line is

 Proportional to load and characteristic impedance.
 Directly proportional to characteristic impedance and inversely to load impedance.
 Directly proportional to voltage minimum and inversely proportional to voltage maximum.
  Directly proportional to load impedance and inversely to characteristic impedance.

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

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

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