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Power Systems

Power Systems
Specified quantities of slack bus are

 P and V
 P and Q
 V and δ
 P and δ

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Power Systems
Differential relays does not used for which of the following faults?

 faults within a transformer
 both 1 and 2
 through faults
 faults within a generator

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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
Positive, negative and zero sequence impedances of line are 2,2 and 5 pu respectively. Find self and mutual impedances respectively?

 1 and 3 pu
 3 and 1 pu
 2 and 2 pu
 2 and 5 pu

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Power Systems
A hydroelectric power station is commonly found in

 swamps.
  hilly areas.
 desert areas.
 grasslands.

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Power Systems
Graphite is use din nuclear plant as a / an

 electrode.
  moderator.
 fuel.
 coolant.

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