DC Motors If the supply voltage for a D.C. motor is increased, which of the following will decrease? Starting torque Full-load current Operating speed All of these Starting torque Full-load current Operating speed All of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors In the dc motor the iron losses occur in Field Armature Commutator Brushes Field Armature Commutator Brushes ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a series motor at no load is 4000 rpm Infinity 1000 rpm 2000 rpm 4000 rpm Infinity 1000 rpm 2000 rpm ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive sparking at brushes may be caused due to Worn bearings Misaligment of machine Loose coupling Dirt on the commutator Worn bearings Misaligment of machine Loose coupling Dirt on the commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors The maximum end play of a motor is about 2 mm 10 mm 0.4 mm 6 mm 2 mm 10 mm 0.4 mm 6 mm ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor if the back emf is absent Motor will run at very slow speed Motor will not run at all Motor will run at very high speed Motor will burn Motor will run at very slow speed Motor will not run at all Motor will run at very high speed Motor will burn ANSWER DOWNLOAD EXAMIANS APP
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