Electrical Machines The material used for commutator brushes is mostly mica. cast iron. carbon. copper. mica. cast iron. carbon. copper. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a 3-phase induction motor operating in its stable region decreases with decrease in the load torque. remains constant. decreases with increase in the load torque. increases with increase in the load torque. decreases with decrease in the load torque. remains constant. decreases with increase in the load torque. increases with increase in the load torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward Leonard control provides speed control above rated speed. below rated speed. in one direction only. in both direction. above rated speed. below rated speed. in one direction only. in both direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Speed of DC motor can be controlled by varying all of these. resistance of armature culture. applied voltage. its flux oer pole. all of these. resistance of armature culture. applied voltage. its flux oer pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC shunt motor if load is increased, the speed increased slightly. remains constant. reduce slightly. increase proportional. increased slightly. remains constant. reduce slightly. increase proportional. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The full load copper loss and iron loss of transformer are 6400W and 5000W respectively. The copper loss and iron loss at half load will be respectively? 1600 W and 5000 W 3200 W and 5200 W 3200 W and 2500 W 1600 W and 1250 W 1600 W and 5000 W 3200 W and 5200 W 3200 W and 2500 W 1600 W and 1250 W ANSWER DOWNLOAD EXAMIANS APP
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