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Power Systems

Power Systems
For flat voltage profile system, voltage regulation is

 100%
 any of the above
 0%
 50%

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Power Systems
By using guard ring in a transmission line, its string efficiency

 decrease
None of these
 increase
 remains unaffected

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

 RMS
 any of the above
 average
 peak value

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Power Systems
A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10^-6∠90° â„§. Find the shunt reactor required for compensating ferranti effect?

 3000 Ω
 1500 Ω
 2000 Ω
 500 Ω

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Power Systems
For a 500 Hz frequency excitation, a 100 km long power line will be modelled as

 long transmission line
 any of the above
 shunt capacitor
 medium transmission line

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Power Systems
Due to proximity effect, the increase in conductor resistance is not negligible in

 communication lines
 overhead transmission lines
 underground cable
All of these

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