DC Generators MCQ - Electrician (Set-1) with Answers

DC Generators MCQ - Electrician (Set-1) with Answers

81) In DC generator, the number of segments and commutator is equal to the number of :

Answer is:

armature coils

82) When conductors are stationary, to induce an e.m.f. dynamically, It is necessary to :

Answer is:

rotate the magnetic field over the conductor

83) Which one of the following is the reason for loosing the residual magnetism of self excited DC generator ?

Answer is:

The generator is kept idle for a long time

84) The cross - magnetizing effect of armature reaction in DC generator can be nullified by :

Answer is:

shifting the brush position from GNA to MNA

85) The insulating material used in between commutator segment is :

Answer is:

mica

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