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Dc Generators QUESTIONS AND ANSWERS

Electrical Engineering : Dc Generators QUESTIONS AND ANSWERS :: part2 : 21 to 25

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

21.Compensating windings are used in D.C. generators

mainly to reduce the eddy currents by providing local short-circuits

to provide path for the circulation of cooling air

to neutralise the cross-magnetising effect of the armature reaction

none of the above

22.Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator ?

Dummy coils

Commutator

Eye bolt

Equilizer rings

23.Two generators A and B have 6-poles each. Generator A has wave wound armature while generator B has lap wound armature. The ratio of the induced e.m.f. is generator A and B will be

2 : 3

3 : 1

3 : 2

1 : 3

24.Eddy currents are induced in the pole shoes of a D.C. machine due to

oscillating magnetic field

pulsating magnetic flux

relative rotation between field and armature

all above

More Dc Generators QUESTIONS AND ANSWERS available in next pages