Q. According to Fleming's right-hand rule for finding the direction of induced e.m.f., when middle finger points in the direction of induced e.m.f., forefinger will point in the direction of
✅ Correct Answer: (B)
lines of force
D.C. Generators MCQs | Page - 2
Dear candidates you will find MCQ questions of D.C. Generators here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. Armature coil is short circuited by brushes when it lies
✅ Correct Answer: (A)
along neutral axis
Q. Armature reaction in a generator results in
✅ Correct Answer: (A)
demagnetisation of leading pole tip and magnetisation of trailing pole tip
Q. Armature reaction of an unsaturated D.C. machine is
✅ Correct Answer: (A)
crossmagnetising
Q. As a result of armature reaction, the reduction in the total mutual air gap flux in a D.C. generator is approximately
✅ Correct Answer: (D)
5 percent
Q. Compensating windings are used in D.C. generators
✅ Correct Answer: (C)
to neutralise the cross-magnetising effect of the armature reaction
Q. Copper brushes in D.C. machine are used
✅ Correct Answer: (A)
where low voltage and high currents are involved
Q. D.C. generator generally preferred for charging automobile batteries is
✅ Correct Answer: (C)
long shunt compound generator
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