Electrical Machines A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm. Find the rotor efficiency? 95% 92% 96% 94% 95% 92% 96% 94% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic circuit of a dc shunt generator with negligible armature resistance and brush contact voltage drop remains unsaturated when it delivers full-load current at rated terminal voltage. The brushes are kept in the interpolar axis and speed is maintained constant. When the load is switched off, the terminal voltage would increase become zero decrease remain the same increase become zero decrease remain the same ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor output power? 1820W 2000W 1920W 1450W 1820W 2000W 1920W 1450W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direct-on-line (DOL) starters are not suitable for starting large DC motors, because the motor may run away. the motor may not start. the starting torque becomes low. the starting current will be enormously high. the motor may run away. the motor may not start. the starting torque becomes low. the starting current will be enormously high. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating winding is placed in the All of these main field armature core pole shoe All of these main field armature core pole shoe ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation of the synchronous generator fails, it acts as a/an synchronous motor. synchronous generator. induction motor. induction generator. synchronous motor. synchronous generator. induction motor. induction generator. ANSWER DOWNLOAD EXAMIANS APP
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