DC Motors The armature voltage control of dc motor provides Constant current drive Constant torque drive None of the listed here Constant voltage drive Constant current drive Constant torque drive None of the listed here Constant voltage drive ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive motor vibration is caused by Bent shaft Worn bearings Too much brush tension Open armature coil Bent shaft Worn bearings Too much brush tension Open armature coil ANSWER DOWNLOAD EXAMIANS APP
DC Motors The variable resistor shunting the field of a dc series motor is called a Field divertor Armature divertor Voltage regulator Potential divider Field divertor Armature divertor Voltage regulator Potential divider ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the armature of a D.C. motor rotates, e.m.f. induced is None of these Self-induced e.m.f. Back e.m.f. Mutually induced e.m.f. None of these Self-induced e.m.f. Back e.m.f. Mutually induced e.m.f. 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 Which one of the following is not the function of pole shoes in a D.C. machine? To reduce eddy current loss To reduce the reluctance of the magnetic path To support the field coils To spread out flux for better uniformity To reduce eddy current loss To reduce the reluctance of the magnetic path To support the field coils To spread out flux for better uniformity ANSWER DOWNLOAD EXAMIANS APP
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