Power Systems
A transmission line has self and mutual impedances are 0.8 and 0 pu respectively. Find the positive, negative and zero sequence impedances respectively?

 0.6, 0.6 and 1.2 pu
 0.8, 0.8 and 0.8 pu
 0.6, 0.8 and 1.2 pu
 0.6, 0.6 and 0.6 pu

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Power Systems
The factor affecting run off are

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

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