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

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

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Power Systems
An impulse turbine

 makes use of a draft tube.
 always operates submerged.
  operates by initial complete conversion to kinetic energy.
 is most suited for low head and high discharge power plants.

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