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Power Systems

Power Systems
Condition for maximum voltage regulation

 tanφ = X/R
 cosφ = X/R
 cosφ = R/X
 tanφ = R/X

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Power Systems
The insulator thickness on the conductor, in cables depends upon

 reactive power
 current
 power factor
 voltage

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Power Systems
The total number of strands in a ACSR conductor are 7, then find the layer number?

 2
 5
 3
 7

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Power Systems
The time taken by the turbine to fall to 0 rpm speed from 3000 rpm is called

  settling time.
  stopping time.
  coasting time.
  damping time.

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Power Systems
Pelton wheel turbine is a

  none of above.
  high head turbine.
  medium head turbine.
  low head turbine.

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Power Systems
A loss less transmission line having surge impedance loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30 %. Then SIL of compensated transmission line will be

 2725 MW.
  2280 MW.
 1835 MW.
 3257 MW.

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