Electrical Engineering Mcqs — Test 88

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Question 1

____________ is the common method of applying brushes to the commntator?

Question 2

The insulation between windings and grounded core and the insulation between the windings of the same phase is called__________________?

Question 3

The surge phenomenon is particularly important in case of_______________?

Question 4

A practical formula for determining the thickness of insulation between low voltage and high voltage windings is__________________?

Question 5

For large power transformers, self oil cooled type or air blast type which of the following values of current density may be used?

Question 6

The usual values of maximum flux densities for distribution transformers using hot rolled silicon steel are______________?

Question 7

The flash point of transformer oil should be higher than_______________?

Question 8

The high voltage winding is usually which of the following type ?

Question 9

D.C. windings are____________?

Question 10

For 275 kV transformers, using cold rolled grain oriented steel, which of the following values of flux density may be used?