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Power Systems

Power Systems
If the inertia constant H = 10 MJ/MVA for a 50 MVA generator, the stored energy is

 500 MJ
 50 MJ
 5 MJ
 10 MJ

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Power Systems
Corona is accompanied by

All of these
 hissing sound
 violet visible light
 power loss and interference

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Power Systems
For transmission line which one of the following relation is true?

 AD - BC = -1
 AD - BC = 1
 AD - BC = 0
 AD + BC = 0

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Power Systems
In nuclear power plants which material is/are used as coolant?

 graphite
 beryllium
 liquid sodium
All of these

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Power Systems
The rating of fuse wire is always expressed in

  amperes.
  ampere-volts.
  kWh.
  ampere-hours.

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Power Systems
A guard ring is used in string type insulator having 3 units to improve string efficiency. Find the capacitance of metal link 2 if pin to earth capacitance of each unit is 1 F?

 4 F
 2 F
 0.5 F
 1 F

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