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Power Systems

Power Systems
Find the propagation constant, if impedance is 10Ω and admittance is 10 â„§?

 10
 5
 1
 100

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Power Systems
For variable heads of near about but less than 30 meters, which type of turbine is used in hydro power station?

 Pelton
None of these
 Kaplan
 Francis

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Power Systems
Bundled conductors are used for EHV transmission lines primarily for reducing the

 voltage drop across the line
 surge impedance of the line
 corona loss
 copper loss

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Power Systems
The specific speed ( NS ) of turbine is given by

 N√( P ) / H2/3.
  N√( P ) / H1.25.
 none of these.
 P√( N ) / H3/2.

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Power Systems
In relay coil which is used?

  Current transformer.
  Instrument transformer.
  Potential transformer.
  Power transformer.

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Power Systems
Which of the following method is used for changing power factor from leading to lagging

 any of the above
 shunt capacitor
 series capacitor
 shunt reactor

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