Power Systems
In load flow studies PV bus is treated as PQ bus when

 phase angle become high
 any of the above
 reactive power goes beyond limit
 voltage at the bus become high

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
The factor affecting run off are

  all of above.
 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.

ANSWER DOWNLOAD EXAMIANS APP