DC Motors Excessive motor vibration is caused by Open armature coil Bent shaft Too much brush tension Worn bearings Open armature coil Bent shaft Too much brush tension Worn bearings ANSWER DOWNLOAD EXAMIANS APP
DC Motors The greatest percentage of power loss in a dc motor is due to Friction loss Windage loss Copper loss Core loss Friction loss Windage loss Copper loss Core loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following in a dc motor, can sustain the maximum temperature rise? Armature winding Field winding Slip rings Commutator Armature winding Field winding Slip rings Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors The value of back emf in dc motor is maximum at None of the listed here No load Half full load Full load None of the listed here No load Half full load Full load ANSWER DOWNLOAD EXAMIANS APP
DC Motors In the dc motor the iron losses occur in Commutator Armature Field Brushes Commutator Armature Field Brushes ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. machines the residual magnetism is of the order of 2 to 3 percent 10 to 15 percent 50 to 75 percent 20 to 25 percent 2 to 3 percent 10 to 15 percent 50 to 75 percent 20 to 25 percent ANSWER DOWNLOAD EXAMIANS APP
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