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POWER SYSTEMS

Power Systems
Surge impedance loading (SIL) is represented by

 both 1 and 2
 Vl²/Zs
 Vph²/Zs
 Vl²*√(C/L)

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Power Systems
Surge impedance loading can be increased by

 increasing of voltage level
 both 1 and 2
 increasing of inductance value
 increasing of capacitance value

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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?

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

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Power Systems
A transmission line is compensated with shunt capacitance Csh. After shunt compensation surge impedance loading will

 increases
 remains unaffected
 decreases
None of these

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Power Systems
Which of the following represents the transmission or reflection coefficient of voltage Tv? (Zl = Surge impedance of load, Zs = Surge impedance of line)

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

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