DC Motors Small dc motors up to 5 HP usually have 4 poles 8 poles 6 poles 2 poles 4 poles 8 poles 6 poles 2 poles 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 continue to run The motor will stop The motor will run noisy The armature may burn The motor will continue to run The motor will stop The motor will run noisy ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 100 % Less than 50% 60 to 70 % 80 to 90 % 100 % Less than 50% 60 to 70 % 80 to 90 % ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. generators are normally designed for maximum efficiency around Rated voltage Full load All of these Rated r.p.m. Rated voltage Full load All of these Rated r.p.m. ANSWER DOWNLOAD EXAMIANS APP
DC Motors Dc series motors are used in those applications where _____ is required. Constant speed High starting torque Low no load speed None of the listed here Constant speed High starting torque Low no load speed None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to Rotor laminations Commutator End plates Pole shoes Rotor laminations Commutator End plates Pole shoes ANSWER DOWNLOAD EXAMIANS APP
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