Electrical Engineering Mcqs — Test 48

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Question 1

Solid type cables are considered unreliable beyond 66 kV because___________?

Question 2

In cables the charging current__________?

Question 3

If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be_______________?

Question 4

The intersheaths in the cables are used to_____________?

Question 5

The breakdown of insulation of the cable can be avoided economically by the use of___________?

Question 6

In the cables, sheaths are used to___________?

Question 7

If the length of a cable is doubled, its capacitance____________?

Question 8

The metallic sheath may be made of lead or lead alloy or of aluminium ?

Question 9

It is difficult to maintain oil filled cables____________?

Question 10

In congested areas where excavation is expensive and inconvenient ‘draw in system’ of laying of underground cables is often adopted