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Power Systems

Power Systems
Corona loss is ----------------- on hilly areas than as plain areas.

None of these
 less
 remain same
 more

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Power Systems
Critical visual voltage is the voltage at which

 corona is visible with blue or violet colour
None of these
 corona is just initiated
 both 1 and 2

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Power Systems
Where do compounding done in thermal power plants

  Turbine.
  Ash handling plant.
  Coal handling plant.
  Generator.

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Power Systems
For 800 MJ stored energy in the rotor at synchronous speed, what is the inertia constant H for a 50 Hz, four pole turbo generator rated 100 MVA, 11 kV?

 2 MJ/MVA
 4 MJ/MVA
 8 MJ/MVA
 6 MJ/MVA

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Power Systems
Find the value of a729, where "a" is the operator

 0
 α²
 1
 α

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Power Systems
Power transmission lines are transposed to reduce

 proximity effect
 ferranti effect
 radio interference
 skin effect

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