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Power Systems

Power Systems
If the penalty factor of a plant is unity, its incremental transmission loss is

None of these
 -1
 0
 1

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Power Systems
The Y bus matrix of a 100 bus interconnected system is 90% sparse. Then find the number of non zero elements in the Y bus matrix?

 1000
 90
 10
 9000

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Power Systems
Where the voltage is high and current to be interrupted is low, Which of following the breaker is preferable?

 Oil CB.
  Vacuum CB.
 Air blast CB.
 Any of these.

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Power Systems
The 1st nuclear plant in world was commissioned in

  UAE.
  U.S.S.R.
 U.K.
  U.S.A.

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Power Systems
Transmission lines are transposed to reduce

 proximity effect
 skin effect
 ferranti effect
 interference with neighbouring communication lines

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Power Systems
The per unit impedance of a circuit element is 0.30. If the base kV and base MVA are halved, then the new value of the per unit impedance of the circuit element will be

 0.30
 0.0030
 0.0060
 0.60

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