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Power Systems

Power Systems
In thermal plant most of the energy is wasted in

 ESP
 turbines
 boiler
 condenser

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Power Systems
The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be

 10.936 pu
 7.936 pu
 9.936 pu
 8.936 pu

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Power Systems
If the percentage reactance of an element is 20 % and the full load current is 50 Amp, the short circuit current will be

  250 Amp.
 200 Amp.
 350 Amp.
 300 Amp.

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Power Systems
Deaerative heating is done to

 heat the feed water.
 heat the steam.
 remove dissolved.
  remove dissolved gases in water.

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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.
 0.44.
 0.25.
  0.83.

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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

 10%
 -10%
 -6.92%
 6.92%

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