DC Motors Excessive motor vibration is caused by Open armature coil Worn bearings Bent shaft Too much brush tension Open armature coil Worn bearings Bent shaft Too much brush tension ANSWER DOWNLOAD EXAMIANS APP
DC Motors When two dc series motor are commected in parallel, the resultant speed is Loss than the normal speed More than the normal speed Zero Normal speed Loss than the normal speed More than the normal speed Zero Normal speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To improve cooling To reduce the generated emf To increase the generated emf To reduce the sparking To improve cooling To reduce the generated emf To increase the generated emf To reduce the sparking ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased When the field current increases When the armature current decreases By interpoles When the armature current increases When the field current increases When the armature current decreases By interpoles When the armature current increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor? Frame Shaft Stator Commutator Frame Shaft Stator Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Thyratron Thermistor Thyristor Transistor Thyratron Thermistor Thyristor Transistor ANSWER DOWNLOAD EXAMIANS APP
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