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Power Systems

Power Systems
One fission of U235 releases energy of

 525 MeV.
 335 MeV.
  200 MeV.
 435 MeV.

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Power Systems
If the breakdown voltage of the insulator is high, the thickness of the insulator is

None of these
 high
 it does not related to breakdown voltage
 less

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Power Systems
Which of the following quantities are to be calculated for generator bus?

 δ and V
 Q and δ
 P and Q
 P and V

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Power Systems
In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is

 500 Ω
 1000 Ω
 250 Ω
 25 Ω

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Power Systems
Isolator in sub station is open under ------------- condition?

 no load
 any of the above
 short circuit
 full load

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Power Systems
An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 500/5. The plug setting multiplier for a fault current of 5 kA is

 5
 2
 8
 6

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