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.Management Sciences
A. identified by the scarring of the commutator segment to which open circuited coil is connected
B. indicated by a spark completely around the commutator
C. both A. and (b)
D. none of the above
Related Mcqs:
- In D.C. generators, the cause of rapid brush wear may be___________?
- A. severe sparking B. rough commutator surface C. imperfect contact D. any of the above...
- In case of a 4-pole D.C. generator provided with a two layer lap winding with sixteen coils, the pole pitch will be__________________?
- A. 4 B. 8 C. 16 D. 32...
- For a D.C. machines laboratory following type of D.C. supply will be suitable___________?
- A. rotary converter B. mercury are rectifier C. induction motor D.C. generator set D. synchronous motor D.C. generator set...
- The number of brushes in a commutator depends on______________?
- A. speed of armature B. type of winding C. voltage D. amount of current to be collected...
- A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave will_____________?
- A. will be zero B. will be of 5 Hz C. will be of 5 xiVHz D. will be of v Hz 5...
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