DC Motors D.C. generators are normally designed for maximum efficiency around Full load Rated voltage Rated r.p.m. All of these Full load Rated voltage Rated r.p.m. All of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To reduce the generated emf To improve cooling To increase the generated emf To reduce the sparking To reduce the generated emf To improve cooling To increase the generated emf To reduce the sparking ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. series motors are used None of these Where load changes frequently Where load is constant Where constant operating speed is needed None of these Where load changes frequently Where load is constant Where constant operating speed is needed ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. machines the residual magnetism is of the order of 50 to 75 percent 20 to 25 percent 10 to 15 percent 2 to 3 percent 50 to 75 percent 20 to 25 percent 10 to 15 percent 2 to 3 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor? Commutator Frame Shaft Stator Commutator Frame Shaft Stator 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 Series motor Shunt motor Cumulative compound motor Differentially compound motor Series motor Shunt motor Cumulative compound motor ANSWER DOWNLOAD EXAMIANS APP
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