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Power Systems

Power Systems
Find the value of a729, where "a" is the operator

 1
 α
 0
 α²

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Power Systems
A transmission line is compensated with shunt capacitance Csh. If the uncompensated transmission line surge impedance is Zs, then find the new surge impedance Zn after shunt compensation?

 √(1 + Kcsh)/Zs
All of these
 Zs*√(1 + Kcsh)
 Zs/√(1 + Kcsh)

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Power Systems
Generation of of one watt needs about ______________ fission per second

 3.1 × 106.
 3.1.
  3.1 × 1010.
 3.1 × 107.

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Power Systems
The voltage and current instantaneous values are given as 5 sin (ωt + 30°) pu and 2 sin (ωt - 15°) pu respectively. Find the per unit active power?

 7 pu
 3.535 pu
 5 pu
 5.353 pu

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Power Systems
A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. Find the surge impedance loading with compensation?

 456 MW
 478 MW
 386 MW
 400 MW

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Power Systems
A loss less transmission line has a length of 600 km, find the phase shift of voltage signal?

 42°
 45°
 36°
 90°

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