DC Motors The torque developed by a dc motor is directly proportional to Armature resistance × armature current Armature resistance × applied voltage None of the listed here Flux per pole × armature current Armature resistance × armature current Armature resistance × applied voltage None of the listed here Flux per pole × armature current ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 1.0 2.0 4.0 0.5 1.0 2.0 4.0 0.5 ANSWER DOWNLOAD EXAMIANS APP
DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The armature may burn The motor will stop The motor will run noisy The motor will continue to run The armature may burn The motor will stop The motor will run noisy The motor will continue to run ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. generators are normally designed for maximum efficiency around Rated r.p.m. Full load All of these Rated voltage Rated r.p.m. Full load All of these Rated voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to Commutator Rotor laminations End plates Pole shoes Commutator Rotor laminations End plates Pole shoes ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when Load is removed The field is opened 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. ANSWER DOWNLOAD EXAMIANS APP
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