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POWER SYSTEMS

Power Systems
A 1-phase transmission line has an impedance (3+4j) Ω . Find the power factor of the load for achieving maximum and zero voltage regulation?

 0.8 lag and 0.6 lead
 0.6 lag and 0.6 lead
 0.6 lag and 0.8 lead
 0.8 lag and 0.8 lead

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Power Systems
A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead

 -6.92%
 -10%
 10%
 6.92%

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Power Systems
A transmission line has 50 km operating at frequency of 500 Hz. Find the type of the line?

 short transmission line
 long transmission line
 any of the above
 medium transmission line

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Power Systems
A transmission line has 200 km operating at frequency of 10 Hz Hz. Find the type of the line

 long transmission line
 medium transmission line
 any of the above
 short transmission line

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Power Systems
In which of the following transmission lines capacitance effect is negligible?

 both 1 and 3
 medium transmission lines
 long transmission lines
 shoart transmission lines

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