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Dc Generators QUESTIONS AND ANSWERS

Electrical Engineering : Dc Generators QUESTIONS AND ANSWERS :: part1 : 16 to 20

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

16.In D.C. generators, current to the external circuit from armature is given through

commutator

solid connection

slip rings

none of above

17.In a commutator

copper is harder than mica

mica and copper are equally hard

mica is harder than copper

none of the above

18.If B is the flux density, I the length of conductor and v the velocity of conductor, then induced e.m.f. is given by

Blv

Blv2

Bl2v

Bl2v2

19.The material for commutator brushes is generally

mica

copper

cast iron

carbon

20.Copper brushes in D.C. machine are used

where low voltage and high currents are involved

where high voltage and small cur-rents are involved

in both of the above cases

in none of the above cases

More Dc Generators QUESTIONS AND ANSWERS available in next pages

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Electrical Engineering Questions And Answers :: Dc Generators: part1

Dc Generators QUESTIONS AND ANSWERS

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