DC Generators The bearings used to support the rotor shafts are generally Ball bearings Magnetic bearings Bush bearings Needle bearings Ball bearings Magnetic bearings Bush bearings Needle bearings ANSWER DOWNLOAD EXAMIANS APP
DC Generators The dc generator that has poorest voltage is Over compounded generator Series generator Shunt generator Flat compounded generator Over compounded generator Series generator Shunt generator Flat compounded generator ANSWER DOWNLOAD EXAMIANS APP
DC Generators If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be Small Zero The same as rated voltage High Small Zero The same as rated voltage High ANSWER DOWNLOAD EXAMIANS APP
DC Generators The efficiency of a dc generator is maximum when its variable loss is Equal to half of constant loss Equal to double the constant loss Equal to Constant loss None of the listed here Equal to half of constant loss Equal to double the constant loss Equal to Constant loss None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The greatest eddy current loss occurs in the _____ of a dc machine. Armature Field poles Commutating poles Yoke Armature Field poles Commutating poles Yoke ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a wave winding, the commutator pitch is approximately equal to Twice the pole pitch None of the listed here Pole pitch Thrice the pole pitch Twice the pole pitch None of the listed here Pole pitch Thrice the pole pitch ANSWER DOWNLOAD EXAMIANS APP
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