Power Systems
A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is

 25%
 33.33%
 66.66%
 75%

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
The factor affecting run off are

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

ANSWER DOWNLOAD EXAMIANS APP