DC Motors In a dc machines the residual magnetism is of the order of 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 50 to 75 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors Usually wide and sensitive speed control is desired in case of Colliery winders Centrifugal pumps Steel rolling mills Elevators Colliery winders Centrifugal pumps Steel rolling mills Elevators ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be Almost negligible Rated full-load current Less than full-load current More than full-load current Almost negligible Rated full-load current Less than full-load current More than full-load current ANSWER DOWNLOAD EXAMIANS APP
DC Motors No load speed of which of the following motor will be highest? Shunt motor Cummulative compounded motor Series motor Differentially compounded motor Shunt motor Cummulative compounded motor Series motor Differentially compounded motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the armature of a D.C. motor rotates, e.m.f. induced is Back e.m.f. Mutually induced e.m.f. Self-induced e.m.f. None of these Back e.m.f. Mutually induced e.m.f. Self-induced e.m.f. None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motor has the poorest speed regulation? Shunt motor Differentially compound motor Series motor Cummulative compound motor Shunt motor Differentially compound motor Series motor Cummulative compound motor ANSWER DOWNLOAD EXAMIANS APP
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