Power Systems
a 50 Hz, 3-phase synchronous generator has inductance per phase of 15 mH. The capacitance of the generator and circuit breaker is 0.002 µF. What is its natural frequency?

 29 kHz
 290 kHz
 2.9 kHz
 29 MHz

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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 and keeping it at raised value.
 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, but later bringing it back to K = 1.

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