DC Motors Which one of the following is not the function of pole shoes in a D.C. machine? To spread out flux for better uniformity To reduce the reluctance of the magnetic path To support the field coils To reduce eddy current loss To spread out flux for better uniformity To reduce the reluctance of the magnetic path To support the field coils To reduce eddy current loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor is still used in industrial applications because it None of the listed here Provides fine speed control Is cheap Is simple in construction None of the listed here Provides fine speed control Is cheap Is simple in construction ANSWER DOWNLOAD EXAMIANS APP
DC Motors The direction of rotation of a D.C. series motor can be changed by Either of (A) and (B) above None of these Interchanging supply terminals Interchanging field terminals Either of (A) and (B) above None of these Interchanging supply terminals Interchanging field terminals ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. series motors are used Where load changes frequently None of these Where constant operating speed is needed Where load is constant Where load changes frequently None of these Where constant operating speed is needed Where load is constant ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To increase the generated emf To reduce the generated emf To improve cooling To reduce the sparking To increase the generated emf To reduce the generated emf To improve cooling To reduce the sparking ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. motor is to be selected for conveyors, which rriotor would be preferred ? Differentially compound motor Cumulative compound motor Series motor Shunt motor Differentially compound motor Cumulative compound motor Series motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
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