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Power Systems

Power Systems
Buchholz relay is used for protection of

  none of these.
  alternator.
  transformer.
  bus bar.

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Power Systems
Ferranti effect occurs under

 no load
 half load
 any of the above
 full load

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Power Systems
In hydro power stations what is an enlarged body of water just above the intake and used as a regulating reservoir called

 Penstock.
  Fore bay.
 Reservoir.
 Spillways.

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Power Systems
Length of short transmission line is up to

 any of the above
 150 km
 40 km
 80 km

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Power Systems
The power generated by two plants are; P1 = 50 MW, P2 = 40 MW. If the loss coefficients are B11 = 0.001, B22 = 0.0025 and B12 = -0.0005, then power loss will be

 5.5 MW
 6.5 MW
 8.5 MW
 4.5 MW

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Power Systems
For head and low discharge the water turbine used

  Pelton wheel.
 Francis turbine.
 Kaplan wheel.
 propeller turbine.

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