Electrical Machines A DC motor with armature resistance of 0.5 ohms connected directly to a 220 Volt supply. If the armature is stationary then the current flowing through the armature is 440 A. 570 A. 340 A. 250 A. 440 A. 570 A. 340 A. 250 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Example of double excited machine is Synchronous motor. Both are correct. DC Shunt Motor None of these Synchronous motor. Both are correct. DC Shunt Motor None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening control method is used for the _________ ? both A and B above rated speed None of these below rated speed both A and B above rated speed None of these below rated speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 1-phase induction motor, if the forward torque slip is S, what is the backward torque slip? 2-S 1-S 1/S S 2-S 1-S 1/S S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1000 1203 1080 1200 1000 1203 1080 1200 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The material used for commutator brushes is mostly carbon. mica. copper. cast iron. carbon. mica. copper. cast iron. ANSWER DOWNLOAD EXAMIANS APP
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