DC Motors The commutating winding is basically used in a dc machine To control the speed of machine None of the listed here To reduce armature reaction To improve commutation To control the speed of machine None of the listed here To reduce armature reaction To improve commutation ANSWER DOWNLOAD EXAMIANS APP
DC Motors A three point starter is considered suitable for Shunt motors All D.C. motors Shunt, compound and series motors Shunt as well as compound motors Shunt motors All D.C. motors Shunt, compound and series motors Shunt as well as compound motors ANSWER DOWNLOAD EXAMIANS APP
DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The motor will continue to run The motor will stop The armature may burn The motor will run noisy The motor will continue to run The motor will stop The armature may burn The motor will run noisy ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when The load is increase The armature circuit is opened. Load is removed The field is opened The load is increase The armature circuit is opened. Load is removed The field is opened ANSWER DOWNLOAD EXAMIANS APP
DC Motors A direct on line starter is used for starting motors Upto 15 HP Upto 10 HP Upto 5 HP Upto 20 HP Upto 15 HP Upto 10 HP Upto 5 HP Upto 20 HP ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a series motor at no load is 2000 rpm 1000 rpm Infinity 4000 rpm 2000 rpm 1000 rpm Infinity 4000 rpm ANSWER DOWNLOAD EXAMIANS APP
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