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Power Systems

Power Systems
One atomic mass unit is equivalent to

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

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Power Systems
String efficiency depends upon

  all of these.
 voltage rating of one SCR.
 no. of SCR in the string.
 voltage rating of whole string.

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Power Systems
A network containing 50 buses in which 10 are the voltage control buses, 6 are the generator buses. Find the size of the Jacobian matrix?

 84*84
 34*34
 33*33
 83*83

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Power Systems
Non-commercial sources of energy are

  wood, animal wastes and agricultural wastes.
 solar, wind and biomass.
 fossil fuel, hydro power and nuclear power.
None of these

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

  Peterson coil.
  Reactance.
  Resistance.
  Solid.

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Power Systems
In an induction relay for a particular current setting the operating time 4 sec. When the time multiplier setting is 0.8 if the time multiplier setting is rest to 1 the operating time is

 10.
  un changed.
  1.
 5.

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