Power Systems
The conductor carries more current on surface as compared to core. This is called as

 corona effect
 skin effect
All of these
 unsymmetrical fault

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Power Systems
The factor affecting run off are

 amount of vegetation and weather condition in the catchment area.
 rain fall pattern, shape and size of catchment area.
  all of above.
 the topography and nature of soil in the catchment area.

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Power Systems
A sodium graphite reactors use

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

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