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Power Systems

Power Systems
Phase shift occurs due to which of the following components?

 inductance
 both 1 and 2
 capacitance
 conductance

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Power Systems
A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm cosωt?

 2.63 msec
 9.68
 1.47 msec
 4.68 msec

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Power Systems
Which of the following method is/are more reliable?

All of these
 Fast Decoupled Load Flow (FDLF) method
 Gauss-Siedel (GS) method
 Newton Raphson (NR) method

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Power Systems
Installation of capacitors at suitable locations and of optimum size in a distribution system results in

 improved voltage regulation
 reduction of KVA rating of distribution transformers
 reduction in distribution power loss
All of these

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Power Systems
If sag in an overhead line increase, tension in the line

None of these
 decrease
 increase
 remains same

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

 power factor
 current
 reactive power
 voltage

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