DC Generators The greatest percentage of heat loss in a dc machine is due to ______ Hysteresis loss Frictional loss Copper loss Eddy current loss Hysteresis loss Frictional loss Copper loss Eddy current loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators A separately excited generator as compared to a self-excited generator Is more stable Has exciting current independent of load current Is amenable to better voltage control Has all above features Is more stable Has exciting current independent of load current Is amenable to better voltage control Has all above features ANSWER DOWNLOAD EXAMIANS APP
DC Generators In lap winding, the number of brushes is always Half the number of poles Same as the number of poles Two Double the number of poles Half the number of poles Same as the number of poles Two Double the number of poles ANSWER DOWNLOAD EXAMIANS APP
DC Generators A 4-pole , lap wound dc shunt generator has an armature winding consisting of 220 turns each of 0.004 Ω. The armature resistance is 0.5 Ω 0.055 Ω 1 Ω 0.025 Ω 0.5 Ω 0.055 Ω 1 Ω 0.025 Ω 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 Zero Small High The same as rated voltage Zero Small High The same as rated voltage ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of dc generator is laminated to Insulate the core Reduce the bulk Reduce eddy current loss Provide the bulk Insulate the core Reduce the bulk Reduce eddy current loss Provide the bulk ANSWER DOWNLOAD EXAMIANS APP
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