Electrical Engineering Mcqs — Test 19
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Question 1
Compensating windings are used in D.C. generators______________?
Question 2
Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator ?
Question 3
In a D.C. generator the ripples in the direct e.m.f. generated are reduced by_____________?
Question 4
In D.C. generators, lap winding is used for______________?
Question 5
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_______________?
Question 6
The voltage drop for which of the following types of brush can be expected to be least ?
Question 7
The e.m.f. generated by a shunt wound D.C. generator isE. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be_______________?
Question 8
The armature core of a D.C. generator is usually made of__________________?
Question 9
Satisfactory commutation of D.C. machines requires______________?
Question 10
Open circuited armature coil of a D.C. machine is________________?