Electrical Machines If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is 115 V 230 V 460 V 200 V 115 V 230 V 460 V 200 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC Motor for constant load torque, what will happen to the armature current if armature resistance increases? Increases. None of above. Remain unchanged Decreases. Increases. None of above. Remain unchanged Decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - φ induction motor can also be referred to as a asynchronous motor. transformer. repulsion motor. shunt motor. asynchronous motor. transformer. repulsion motor. shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has negative speed regulation? Cumulative compound motors Shunt motor Series motor Differential compound motor Cumulative compound motors Shunt motor Series motor Differential compound motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor used in hair dryers? Shaded pole IM. Split phase IM. Synchronous motors. Cage induction motor. Shaded pole IM. Split phase IM. Synchronous motors. Cage induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A cumulatively compounded dc motor delivers rated load power at rated speed. If the series field is short-circuited, then both decrese Ia increases and ωm decreses both armature current Ia and speed ωm increase Ia remains constant but ωm increase both decrese Ia increases and ωm decreses both armature current Ia and speed ωm increase Ia remains constant but ωm increase ANSWER DOWNLOAD EXAMIANS APP