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
 50 Hz
 -0.52 Hz
 0.48 Hz

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Power Systems
Which of following statement are false

 A thermal reactor needs a moderator material.
 In a nuclear reactor, multiplication factor is kept almost equal to one.
  Nuclear power plants are used as peak load plants only.
 In nuclear power plants, chain reaction is controlled by cadmium rods.

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