DC Motors One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven 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 None of these Does not run as a generator ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses This will make armature to take heavy current, possibly burning it Nothing will happen to motor Motor will come to stop This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses This will make armature to take heavy current, possibly burning it Nothing will happen to motor Motor will come to stop ANSWER DOWNLOAD EXAMIANS APP
DC Motors Ward-Leonard control is basically a Armature resistance control method Field control method Voltage control method Field divertor method Armature resistance control method Field control method Voltage control method Field divertor method ANSWER DOWNLOAD EXAMIANS APP
DC Motors No load speed of which of the following motor will be highest? Series motor Differentially compounded motor Cummulative compounded motor Shunt motor Series motor Differentially compounded motor Cummulative compounded motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive sparking at brushes may be caused due to Misaligment of machine Worn bearings Dirt on the commutator Loose coupling Misaligment of machine Worn bearings Dirt on the commutator Loose coupling ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. motor which of the following can sustain the maximum temperature rise? Armature winding Field winding Commutator Slip rings Armature winding Field winding Commutator Slip rings ANSWER DOWNLOAD EXAMIANS APP
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