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POWER SYSTEMS

Power Systems
Reflection coefficient of voltage is Rv

 2Zs/(Zs + Zl)
 (Zs - Zl)/(Zs + Zl)
 (Zl - Zs)/(Zs + Zl)
 2Zl/(Zs + Zl)

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Power Systems
A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the reflected voltage?

 -81.82 kV
 -18.18 kV
 18.18 kV
 81.82 kV

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Power Systems
Surge impedance loading of a line is increased by which of the following compensation methods?

 shunt reactor
 shunt capacitor
 series capacitor
 both 1 and 2

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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?

 386 MW
 400 MW
 478 MW
 456 MW

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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%. The line is connected to a generator delivering 200 MW. Find the load angle with out and with compensation respectively?

 26° and 30°
 45° and 26°
 30° and 45°
 30° and 26°

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