DGVCL Exam Paper (11-12-2011)
Which motor is used to start heavy loads?

Cumulatively compounded motor
Series motor
Shunt motor
Differentially compounded motor

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

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

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DGVCL Exam Paper (11-12-2011)
Two parallel conductors are carrying the current in the same direction. Which of the following statements is correct?

There is an attracting force between the conductors
The force increases when the distance between the conductors is increased
The force increases when the distance between the conductors is decreased
There is a repelling force between the conductors

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

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

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