DC Motors The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is 6.77% 8.85% 4.76% 2.22% 6.77% 8.85% 4.76% 2.22% ANSWER DOWNLOAD EXAMIANS APP
DC Motors A direct on line starter is used for starting motors Upto 10 HP Upto 5 HP Upto 20 HP Upto 15 HP Upto 10 HP Upto 5 HP Upto 20 HP Upto 15 HP ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive motor vibration is caused by Too much brush tension Bent shaft Worn bearings Open armature coil Too much brush tension Bent shaft Worn bearings Open armature coil ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to Rotor laminations End plates Commutator Pole shoes Rotor laminations End plates Commutator Pole shoes ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased By interpoles When the field current increases When the armature current increases When the armature current decreases By interpoles When the field current increases When the armature current increases When the armature current decreases ANSWER DOWNLOAD EXAMIANS APP
DC Motors The value of back emf in dc motor is maximum at Full load Half full load None of the listed here No load Full load Half full load None of the listed here No load ANSWER DOWNLOAD EXAMIANS APP
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