DGVCL Exam Paper (11-12-2011)
The corona effect can be minimized by increasing

Diameter of the conductor
Both spacing between the conductors and diameter of the conductor
The length of the conductor
Spacing between the conductors

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
Distribution transformers have good all day efficiency due to

Low voltage
Low iron loss
Low copper as well as iron loss
Low copper loss

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP