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
DC Motors For the same H.P. rating and full load speed, following motor has poor starting torque Series Cumulatively compounded Shunt Differentially compounded Series Cumulatively compounded Shunt Differentially compounded ANSWER DOWNLOAD EXAMIANS APP
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 In a dc motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to _____ Reduce sparking Produce flat characteristics Decrease speed Increase speed Reduce sparking Produce flat characteristics Decrease speed Increase speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a series motor at no load is 2000 rpm 1000 rpm 4000 rpm Infinity 2000 rpm 1000 rpm 4000 rpm Infinity ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor can be easily identified by Size of conductor Commutator Winding Yoke Size of conductor Commutator Winding Yoke ANSWER DOWNLOAD EXAMIANS APP
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