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Power Systems

Power Systems
Which of the following relationships are not valid for short transmission lines

All of these
 A = D = 1
 Is = Ir
 B = C = Z

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Power Systems
A 3-phase transmission line has its conductors at the corners of an equilateral triangle with side 3m. The diameter of each conductor is 1.63 cm. The inductance of the line per phase per km is

 1.182 mH
 1.043 mH
 1.093 mH
 1.232 mH

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Power Systems
Ferranti effect can be compensated by which of the following

 both 1 and 2
 shunt reactor
 shunt capacitor
 series capacitor

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Power Systems
Find the characteristic impedance of a transmission line, if impedance is 16 Ω and admittance is 0.1 mâ„§?

 400 Ω
 320 Ω
 160 Ω
 200 Ω

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Power Systems
If a 500 MVA, 11 kV 3-phase generator at 50 Hz feeds through a transfer impedance of (0+j0.605) Ω/phase, an infinite voltage also at 11 kV, then the maximum steady state power transfer on the base of 500 MVA and 11 kV is

 1 pu
 0.4 pu
 0.8 pu
 0.5 pu

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Power Systems
The angular moment of 10 MVA generator is 0.2. Find the new value of angular moment for 20 MVA base?

 0.25 pu
 0.1 pu
 0.4 pu
 0.2 pu

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