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Power Systems

Power Systems
Example of base load stations are

  hydro.
  thermal.
  both A and B.
  gas turbine.

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Power Systems
A 3 layer and diameter of each strand is d, then find the total diameter of ACSR conductor?

 5d
 3d
 2d
 d

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Power Systems
Capacitance voltage transformer ( CVT ) is used to

 connect instruments on the LT side.
  improve the power factor of the transmission.
 reduce losses in a transmission line.
 none of these.

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

 Xm - Xs
 Xs - Xm
 2Xs + Xm
 Xs +2 Xm

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Power Systems
A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator?

 1000
 10
 0.001
 0.1

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Power Systems
In load flow studies PV bus is treated as PQ bus when

 any of the above
 reactive power goes beyond limit
 voltage at the bus become high
 phase angle become high

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