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Power Systems

Power Systems
The conversion ratio of breeder reactor are

  greater than 1.
 less than 1.
 1.
 none of above.

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Power Systems
The positive, negative and zero sequence impedances of a transmission line are 0.5,0.5 and 1.1 pu respectively. The self (Zs) and mutual (Zm) impedances of the line will be given by

 Zs = 0.5 pu, Zm =0.6 pu
 Zs = 0.7 pu, Zm =0.2 pu
 Zs = 0.2 pu, Zm =0.7 pu
 Zs = 0.6 pu, Zm =0.5 pu

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Power Systems
In load flow studies PV bus is treated as PQ bus when

 reactive power goes beyond limit
 phase angle become high
 any of the above
 voltage at the bus become high

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Power Systems
Recovery voltage in CB is equal to

  transient voltage.
  normal frequency 50 Hz rms voltage.
  arcing period voltage.
  none of these.

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Power Systems
Making current is a------------ value?

 peak value
 RMS
 any of the above
 average

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Power Systems
Which of following materials can be used as coolant

 Heavy water.
 CO2.
  Any of above.
 Helium.

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