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Power Systems

Power Systems
One atomic mass unit is equivalent to

 120.4 MeV.
 251.2 MeV.
 180.5 MeV.
  931.4 MeV.

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Power Systems
The total number of strands(N) is concentrically stranded cable with total annular space filled with strands of uniform diameter is given by (if x is number of layers)

 N = 3x²-2x+1
 N = 3x²-3x+1
 N = 3x²+3x+1
 N = 3x²-6x+1

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Power Systems
At slack bus, which one of the following combinations of variables is not specified?

 P and Q
 V and δ
 P and V
 Q and V

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Power Systems
Which of the following is a reaction turbines

  Francis turbine and Kaplan turbine.
  Kaplan and Pelton turbine.
  None of these.
  Pelton turbine and Francis turbine.

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

 lightning arrester
 CVT
 circuit breaker
 current transformer

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Power Systems
Earth fault relay uses the which of the following sequence currents?

 zero sequence
 negative sequence
 any of the above
 positive sequence

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