Power Systems
Which one of following is employed as a moderator by CANDU type of slow thermal nuclear reactors

 Water.
 Beryllium.
  Heavy water.
 Graphite.

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Power Systems
Which of the following statements is true? Corona loss increases with

 increase in conductor size and decrease in supply frequency
 decrease in conductor size and increase in supply frequency
 decrease in conductor size and decrease in supply frequency
 increase in conductor size and increase in supply frequency

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