DC Motors Armature reaction in dc motor is increased When the field current increases When the armature current increases By interpoles When the armature current decreases When the field current increases When the armature current increases By interpoles When the armature current decreases ANSWER DOWNLOAD EXAMIANS APP
DC Motors In case the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be Around 90% Less than 50% Anywhere between 75% and 90% 1 Around 90% Less than 50% Anywhere between 75% and 90% 1 ANSWER DOWNLOAD EXAMIANS APP
DC Motors The armature torque of the D.C. shunt motor is proportional to field flux only None of these armature current only both (A) and (B) field flux only None of these armature current only both (A) and (B) 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 0.5 4.0 2.0 1.0 0.5 4.0 2.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to End plates Pole shoes Rotor laminations Commutator End plates Pole shoes Rotor laminations Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. motor is to be selected for conveyors, which rriotor would be preferred ? Series motor Cumulative compound motor Differentially compound motor Shunt motor Series motor Cumulative compound motor Differentially compound motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
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