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

 unsymmetrical fault
 skin effect
All of these
 corona effect

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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.
 the topography and nature of soil in the catchment area.
  all of above.

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Power Systems
The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by

 PG1 = 125 MW and PG2 = 125 MW
 PG1 = 100 MW and PG2 = 150 MW
 PG1 = 142.5 MW and PG2 = 107.5 MW
 PG1 = 109.75 MW and PG2 = 140.25 MW

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