Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 10% 41% 11% 21% 10% 41% 11% 21% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor drawing an armature current of Ia is operating under saturated magnetic conditions. The torque developed in the motor is proportional to I/Ia2 1/Ia Ia Ia2 I/Ia2 1/Ia Ia Ia2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To eliminate 5th harmonic in the induced voltage phase breadth should be 36° 18° 72° 30° 36° 18° 72° 30° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature resistance control method is used for the _______ ? above rated speed None of these both 1 and 2 below rated speed above rated speed None of these both 1 and 2 below rated speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The heat generated in the transformer is dissipated mainly by convection. radiation. All of these conduction. convection. radiation. All of these conduction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator in DC generator is used for increase efficiency convert AC armature current in to DC collecting of current reduce losses increase efficiency convert AC armature current in to DC collecting of current reduce losses ANSWER DOWNLOAD EXAMIANS APP
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