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Power Systems

Power Systems
Units of incremental cost is

 Rs/hr
 RsMW/hr
 Rs/MWhr
 MWhr/Rs

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Power Systems
Location of a surge tank, in an hydro electric power station is near

 dam.
  turbine.
 reservoir.
 tail race.

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Power Systems
Inductance of transmission line will decrease when

 GMD increase and GMR decrease
 both GMD and GMR decrease
 both GMD and GMR increase
 GMD decrease and GMR increase

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Power Systems
Due to proximity effect, the increase in conductor resistance is not negligible in

 underground cable
 overhead transmission lines
 communication lines
All of these

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Power Systems
Which of the following represents the transmission line positive sequence reactance

 Xm - Xs
 2Xs + Xm
 Xs +2 Xm
 Xs - Xm

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Power Systems
The ratio of reset to pick up current for an induction cup relay is approximately

 1.35.
  0.99.
 1.0.
 0.75.

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