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Power Systems

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

 average
 maximum
 RMS
 any of the above

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Power Systems
Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is

 125 MVA
 400 MVA
 500 MVA
 100 MVA

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Power Systems
The power output of a nuclear power station is proportional to

  the rate at which fission reaction occurs.
 none of above.
 square of the rate at which fission reaction occurs.
 square root of the rate at which fission reaction occurs.

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Power Systems
Advantages of per unit system is/are

All of these
 It has units for all quantities
 No units for any quantity
 Need of transformation ratio

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Power Systems
One atomic mass unit is equivalent to

 180.5 MeV.
 120.4 MeV.
  931.4 MeV.
 251.2 MeV.

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Power Systems
The thermal efficiency of BWR is

 less than that of PWR.
 greater than that of PWR.
None of these
  equal to that of PWR.

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