Power Systems
When a neutral point of 3 - Φ system is directly connected to earth then it has what type of grounding?

  Peterson coil.
  Resistance.
  Reactance.
  Solid.

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Power Systems
The power level of nuclear reactor can be increase by ( K = multiplication factor )

  raising the value of K above 1, but later bringing it back to K = 1.
 lowering the value of K below 1 but later bringing it back to K = 1.
 lowering the value of K below and keeping at that lowered value.
 raising the value of K above 1 and keeping it at raised value.

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