Electrical Machines If the applied voltage of a DC motor is 230 V, then back emf, for maximum power developed is 230 V. 115 V. 200 V. 460 V. 230 V. 115 V. 200 V. 460 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Motor is driving a constant load torque having armature resistance of 0.25 Ω and armature current of 60 A having connected to a voltage of 230 V. Now a resistance of 1 ohm is added into the armature circuit. The ratio of their speed will be 0.25. 0.72. 1.24. 0.62. 0.25. 0.72. 1.24. 0.62. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 12 pole, 600 V, 50 Hz star connected IM has rotor resistance and stand still resistance of 0.03 Ω and 0.5 Ω respectively. The speed of maximum torque will be 540 rpm. 470 rpm. 240 rpm. 450 rpm. 540 rpm. 470 rpm. 240 rpm. 450 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by improper design of stator laminations low voltage supply high loads harmonics developed in the motor improper design of stator laminations low voltage supply high loads harmonics developed in the motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - φ induction motor can also be referred to as a transformer. repulsion motor. asynchronous motor. shunt motor. transformer. repulsion motor. asynchronous motor. shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The frame of an induction motor is made of stainless steel. silicon steel. aluminium. closed grained cast iron. stainless steel. silicon steel. aluminium. closed grained cast iron. ANSWER DOWNLOAD EXAMIANS APP
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