DC Motors The most suitable motor for elevators is the ____ motor. Cummulative compounded Differentially compuonded Series Shunt Cummulative compounded Differentially compuonded Series Shunt ANSWER DOWNLOAD EXAMIANS APP
DC Motors Usually wide and sensitive speed control is desired in case of Colliery winders Centrifugal pumps Elevators Steel rolling mills Colliery winders Centrifugal pumps Elevators Steel rolling mills ANSWER DOWNLOAD EXAMIANS APP
DC Motors One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven None of these Does not run as a generator Runs as a generator Also runs as a motor comes to stop after sometime None of these Does not run as a generator Runs as a generator Also runs as a motor comes to stop after sometime ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive sparking at brushes may be caused due to Misaligment of machine Worn bearings Loose coupling Dirt on the commutator Misaligment of machine Worn bearings Loose coupling Dirt on the commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors The rheostatic speed control method is very Economical Suitable for getting speeds above the normal Unsuitable for rapidly changing loads Efficient Economical Suitable for getting speeds above the normal Unsuitable for rapidly changing loads Efficient ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the armature of a D.C. motor rotates, e.m.f. induced is Mutually induced e.m.f. Back e.m.f. Self-induced e.m.f. None of these Mutually induced e.m.f. Back e.m.f. Self-induced e.m.f. None of these ANSWER DOWNLOAD EXAMIANS APP
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