D.C. generators are connected to the busbars or disconnected from them only under the floating condition________________?

D.C. Generators 19/06/2020

A. to avoid sudden loading of the primemover
B. to avoid mechanicaljerk to the shaft
C. to avoid burning of switch contacts
D. all above

Related Mcqs:

    In case of D.C. machines, mechanical losses are primary function of____________?
    A. current B. voltage C. speed D. none of 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...
    A cumulatively compounded long shunt generator when operating as a motor would be____________?
    A. cumulatively compounded long shunt B. deferentially compounded long shunt C. cumulatively compounded short shunt D. differentially compounded short shunt...
    Lap winding is composed of_____________?
    A. any even number of conductors B. any odd number of conductors C. that even number which is exact multiple of poles + 2 D. that even number which is exact multiple of poles...
    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...

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