Power Systems
Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line?

 -0.52 Hz
 0.48 Hz
 0.52 Hz
 50 Hz

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Power Systems
A CANDU reactor uses

 only fertile materials.
 enriched uranium as fuel and ordinary water as moderator and cooler.
 highly enriched uranium as fuel and water as moderator and coolant.
  natural uranium as fuel and heavy water as moderator and coolant.

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