Power Systems
A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

 0.2 pu
 1.375 pu
 2.4 pu
 3.975 pu

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Power Systems
Which of following statement are false

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

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