Power Systems
A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm cosωt?

 2.63 msec
 9.68
 1.47 msec
 4.68 msec

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Power Systems
A sodium graphite reactors use

  sodium as coolant and graphite as moderator.
 a mixture of sodium and graphite as coolant.
 a mixture of sodium and graphite as moderator.
 sodium as moderator and graphite as coolant.

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