DC Motors The shaft torque in a dc motor is less than total armature torque because of ______ in the motor. None of the listed here Iron and friction losses Field losses Cu losses None of the listed here Iron and friction losses Field losses Cu losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? Induction motor C. shunt motor C. series motor Reluctance motor Induction motor C. shunt motor C. series motor Reluctance motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which D.C. motor is generally preferred for cranes and hoists? Cumulatively compounded motor Series motor Differentially compounded motor Shunt motor Cumulatively compounded motor Series motor Differentially compounded motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following loss in a D.C. generator varies significantly with the load current? Field copper loss None of these Windage loss Armature copper loss Field copper loss None of these Windage loss Armature copper loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the armature of a D.C. motor rotates, e.m.f. induced is Back e.m.f. Self-induced e.m.f. Mutually induced e.m.f. None of these Back e.m.f. Self-induced e.m.f. Mutually induced e.m.f. None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors The main disadvantage of the Ward-Leonard control method is Low efficiency at high loads All of these High maintenance cost High initial cost Low efficiency at high loads All of these High maintenance cost High initial cost ANSWER DOWNLOAD EXAMIANS APP
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