Power Systems
Earth fault relay uses the which of the following sequence currents?

 negative sequence
 positive sequence
 any of the above
 zero sequence

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
The value of off diagonal elements is

 sum of admittances connected at bus j
 which is connected between bus i and bus j with positive sign
 sum of admittances connected at bus i
 which is connected between bus i and bus j with negative sign

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
The factor affecting run off are

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

ANSWER DOWNLOAD EXAMIANS APP