DC Motors Excessive sparking at brushes may be caused due to Loose coupling Dirt on the commutator Misaligment of machine Worn bearings Loose coupling Dirt on the commutator Misaligment of machine Worn bearings ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. generators are normally designed for maximum efficiency around Rated voltage Full load Rated r.p.m. All of these Rated voltage Full load Rated r.p.m. All of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor can be controlled by changing Armature circuit resistance Aplied voltage All of the listed here Is flux Armature circuit resistance Aplied voltage All of the listed here Is flux ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following methods gives the greatest braking torque? None of the listed here Regenerative braking Rheostatic braking Plugging None of the listed here Regenerative braking Rheostatic braking Plugging ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following law can be used to determine the direction of rotation of dc motor? Lenz's law Faraday's law Fleming's left hand rule Coloumb's law Lenz's law Faraday's law Fleming's left hand rule Coloumb's law ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a dc motor is to be selected for conveyors, which motor would be preferred? Cummulative compound motor Shunt motor Series motor Differentially compound motor Cummulative compound motor Shunt motor Series motor Differentially compound motor ANSWER DOWNLOAD EXAMIANS APP
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