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Power Systems

Power Systems
One atomic mass unit is equivalent to

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

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

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

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Power Systems
Normally Z bus matrix is a

 full matrix
 sparse matrix
 null matrix
 unit matrix

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Power Systems
Cheapest plant in operation and maintenance is

  steam power.
  nuclear.
  diesel power.
  hydroelectric.

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Power Systems
Resistance switching in normally employed in

 minimum oil breakers.
 all breakers.
  air blast circuit breaker.
 bulk oil breakers.

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Power Systems
A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage?

 45 kV
 40 kV
 36 kV
 32 kV

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