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Power Systems

Power Systems
Rankine cycle efficiency of a steam power plant is of

  30 - 45 %.
  20 - 30 %.
  45 - 80 %.
  60 - 80 %.

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Power Systems
Offset mho relay is used for the protection of equipment when

None of these
 failure of prime mover of the generator
 loss of excitation of the generator
 either 1 or 2

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Power Systems
Which device is used for protection of equipment from from damage caused by overload or short circuit?

 circuit breaker
 current transformer
 lightning arrester
 CVT

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Power Systems
Which of the following relays is/are unit protection relays?

 both 1 and 2
 Buccholz relays
 over current relays
 Differential relays

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Power Systems
The draw back of NR method as compare to Gauss-Seidel method is/are?

 large number of iterations
 large requirement of computer memory
None of these
 both 1 and 2

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Power Systems
Attenuation occurs due to

 resistance
 conductance
 both 1 and 3
 inductance

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