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Power Systems

Power Systems
The angular moment of 10 MVA generator is 0.2. Find the new value of angular moment for 20 MVA base?

 0.4 pu
 0.25 pu
 0.2 pu
 0.1 pu

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Power Systems
In thermal power stations, economiser will

 reduce the heat
 both 2 and 3
 increase the thermal efficiency
 reduce the thermal efficiency

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Power Systems
The power output from an hydroelectric plants depend on

 type of dam, head, system efficiency.
  discharge, system efficiency.
 type of dam, type of catchment area and discharge.
 type of turbine, type of dam and type of catchment area.

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Power Systems
A thermal protection switch is used to provide protection against

 short circuit.
 over voltage.
 temperature.
  overload.

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Power Systems
Mho relay is used for protection of

  short lines.
  long lines.
  none of these.
  medium lines.

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Power Systems
Which of the following is an impulse turbine

  Francis turbine.
  Pelton turbine.
  None of above.
  Kaplan turbine.

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