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

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

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

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

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