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Power Systems

Power Systems
Which of the following is not a secondary nuclear fuel

 Pu239.
 U233.
  U235.
 None of above.

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Power Systems
Alternate formation and breakage of bubbles are called

  cavitations.
All of these
  water hamming.
  surgfication.

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Power Systems
Ships are usually supplied power by

 None of above.
 Steam accumulator.
 Hydraulic turbine.
  Diesel engine.

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Power Systems
Critical disruptive voltage is a voltage at which

 corona is just initiated
 both 1 and 2
 nether 1 nor 2
 corona is visible with blue or violet colour

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Power Systems
The sequence components of the fault current are as follows : Ipositive = j1.5 pu, Inegative = − j0.5 pu, Izero = − j pu Which fault is this?

  LLG.
  LL.
  LLLG.
  LG.

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Power Systems
The positive (Z1), negative (Z2) and zero sequence (Z0) impedances of a transmission line follows the relation

 Z1 = Z2 = Z0
 (Z1 = Z2) < Z0
 any of the above
 (Z1 = Z2) > Z0

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