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Electrician
Electrician Set-2
DC Generator
40

DC Generator MCQ with Answers

40) What is the effect in D.C generator, if it is kept ideal for long time?

Field coil resistance increases

Armature resistance increases

Increase the armature reaction

Looses its residual magnetism

Answer is:

Looses its residual magnetism

DC Generator MCQ with Answers

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Related DC Generator MCQ with Answers

41) Calculate the induced emf of 4 pole dynamo having 1000 rpm lap wound and total number of conductors is 600, the flux / pole is 0.064 wb?

160V

320V

480V

640V

Answer is:

640V

42) What is the effect on induced emf if the main field flux get distorted in DC generator?

Induced emf increases

Induced emf decreases

No change in induced emf

Induced emf becomes zero

Answer is:

Induced emf decreases

43) What is the cause for heavy sparking in brushes of DC generator?

Short circuit in field winding

Short circuit in armature winding

MNA and GNA position changed

Too much spring tension at brush

Answer is:

MNA and GNA position changed

DC Generator MCQ with Answers

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