DGVCL Exam Paper (11-12-2011)
The purpose of skewing of rotor slots in an induction motor is

To increase the distributuion factor
To increase the breadth factor
To reduce the locking tendency of the rotor
To reduce the magnetic hum of the motor

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

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

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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
Spacing between the conductors
The length of the conductor

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