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Power Systems

Power Systems
Attenuation occurs due to

 conductance
 both 1 and 3
 resistance
 inductance

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

 increase
None of these
 decrease
 remains unaffected

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Power Systems
The load duration curve for a system is 8 hours 30 MW, 16 hours 25 MW and 24 hours 20 MW. The load factor will be

 1.3.
 0.25.
 0.44.
  0.83.

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Power Systems
The per unit impedance Z(pu) is given by

 ZΩ* (MVA)b*100/(KV)²b
 ZΩ* (kVA)b/(KV)²b
 ZΩ* (MVA)b/((KV)²b *100)
 ZΩ* (MVA)b/(KV)²b

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Power Systems
A 3 core cable gives on test a capacitance of 3.7 µF between two cores. Find the line charging current of the cable when it is connected to 11 kV, 50 Hz system?

 1 A.
 14.7 mA.
  14.76 A.
 1.476 A.

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Power Systems
If the penalty factor of a plant is unity, its incremental transmission loss is

 0
 -1
None of these
 1

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