DGVCL Exam Paper (11-12-2011)
The purpose of providing a choke in a tube light is

To improve the power factor
To eliminate corona effect
To limit the current to an appropriate value
To avoid radio interference

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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?

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

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