DC Motors When the speed of dc motor increases, its armature current Decreases Remains same None of the listed here Increases Decreases Remains same None of the listed here Increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following losses are significantly reduced by laminating the core of a D.C. generator? Windage losses Hysteresis losses Eddy current losses Copper losses Windage losses Hysteresis losses Eddy current losses Copper losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating winding is basically used in a dc machine To control the speed of machine To improve commutation None of the listed here To reduce armature reaction To control the speed of machine To improve commutation None of the listed here To reduce armature reaction ANSWER DOWNLOAD EXAMIANS APP
DC Motors The back emf in a dc motor ______ Aids the applied voltage None of the listed here Opposes the applied voltage Aids the armature current Aids the applied voltage None of the listed here Opposes the applied voltage Aids the armature current ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive motor vibration is caused by Too much brush tension Open armature coil Bent shaft Worn bearings Too much brush tension Open armature coil Bent shaft Worn bearings ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motor has the poorest speed regulation? Shunt motor Differentially compound motor Series motor Cummulative compound motor Shunt motor Differentially compound motor Series motor Cummulative compound motor ANSWER DOWNLOAD EXAMIANS APP
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