A. series generator
B. shunt generator
C. compound generator
D. self-excited generator
Related Mcqs:
- Which of the following D.C. generators will be in a position to build up without any residual magnetism in the poles?
A. Series generator
B. Shunt generator
C. Compound generator
D. None of the above - If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be____________?
A. zero
B. small
C. the same as rated voltage
D. high - 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_______________?
A. 2 : 3
B. 3 : 1
C. 3 : 2
D. 1 : 3 - Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator ?
A. Dummy coils
B. Commutator
C. Eye bolt
D. Equilizer rings - 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_______________?
A. E/2
B. 2E
C. slightly less than E
D. E - If a D.C. generator fails to build up the probable cause could not be_____________?
A. imperfect brush contact
B. field resistance less than the critical resistance
C. no residual magnetism in the generator
D. faulty shunt connections tending to reduce the residual magnetism - If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to______________?
A. reverse the field connections
B. increase the field resistance
C. increase the speed of primemover
D. check armature insulation resistance - A 220 V D.C. generator is run at full speed without any excitation. The open circuit voltage will be_____________?
A. zero
B. about 2 V
C. about 50 V
D. 220 V - Which of the following generator will have negligible terminal voltage while running on no-load?
A. Series generator
B. Shunt generator
C. Compound generator
D. Separately excited generator - The terminal voltage of a D.C. shunt generator drops on load because of all of the following reasons except:_____________?
A. armature reaction
B. armature resistance drop
C. field weakening due to armature reaction and armature
D. commutation
