A. using conductor of annealed copper
B. using commutator with large number of segments
C. using carbon brushes of superior quality
D. using equiliser rings
Related Mcqs:
- 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 - A shunt generator running at 1000 r.p.m. has generated e.m.f. as 200 V. If the speed increases to 1200 r.p.m., the generated e.m.f. will be nearly_______________?
A. 150 V
B. 175 V
C. 240 V
D. 290 V - 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 in a D.C. generator is directly proportional to____________?
A. flux/pole
B. speed of armature
C. number of poles
D. all of the above - In a D.C. generator the critical resistance can be increased by_____________?
A. increasing its field resistance
B. decreasing its field resistance
C. increasing its speed
D. decreasing its speed - In case of a flat compounded generator:
A. voltage generated is less than the rated voltage
B. generated voltage is proportional to the load on the generator
C. voltage remains constant irrespective of the load
D. speed varies in proportion to the load on the generator - In a D.C. generator the magnetic neutral axis coincides with the geometrical neutral axis, when_______________?
A. there is no load on|he generator
B. the generator runs on full load
C. the generator runs on overload
D. the generator runs on designed speed - Which generator would you prefer for feeding long D.C. transmission lines ?
A. Series generator
B. Shunt generator
C. Over compound generator
D. Flat compound generator - A series generator can self-excite:______________?
A. only if the load current is zero
B. only if the load current is not zero
C. irrespective of the value of load current
D. none of the above
