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Power Systems

Power Systems
For n bus power system size of Y bus matrix is

 (n-1)×(n-2)
 (n-2)×(n-2)
 n×n
 (n-1)×(n-1)

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Power Systems
The voltage regulation of a line at full load 0.8 power factor is 11. A long transmission line under no load conditions, for a good voltage profile needs

All of these
 shunt reactor at receiving end
 shunt resistance at receiving end
 shunt capacitor at receiving end

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Power Systems
Rankine cycle efficiency of a steam power plant is of

  60 - 80 %.
  45 - 80 %.
  30 - 45 %.
  20 - 30 %.

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

 Xs +2 Xm
 2Xs + Xm
 Xm - Xs
 Xs - Xm

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Power Systems
What is the correct expression for the electrical power developed by

 ( 75 / 0.736 ) × WQHη.
 ( 7 / 75 ) × WQHη.
  ( 0.763 / 75 ) × WQHη.
 75 × 0.736 × WQHη.

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Power Systems
Making current is a------------ value?

 peak value
 any of the above
 RMS
 average

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