DC Motors By flux control method of speed control of a dc shunt motor, we can obtain speeds. Above the normal speed only Above as well as below the normal speed None of the listed here Below the normal speed only Above the normal speed only Above as well as below the normal speed None of the listed here Below the normal speed only ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive sparking at brushes may be caused due to Dirt on the commutator Worn bearings Misaligment of machine Loose coupling Dirt on the commutator Worn bearings Misaligment of machine Loose coupling ANSWER DOWNLOAD EXAMIANS APP
DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The motor will continue to run The motor will run noisy The motor will stop The armature may burn The motor will continue to run The motor will run noisy The motor will stop The armature may burn ANSWER DOWNLOAD EXAMIANS APP
DC Motors These days dc motors are widely used in Machine shops Air compressors Pumping sets Electric traction Machine shops Air compressors Pumping sets Electric traction ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the armature of a D.C. motor rotates, e.m.f. induced is 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 Back e.m.f. ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To improve cooling To increase the generated emf To reduce the generated emf To reduce the sparking To improve cooling To increase the generated emf To reduce the generated emf To reduce the sparking ANSWER DOWNLOAD EXAMIANS APP
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