Electrical Machines If the full load speed of 3-phase, 50Hz induction motor is 950 rpm, what is its half load speed nearly equals to? 1000 rpm 940 rpm 950 rpm 975 rpm 1000 rpm 940 rpm 950 rpm 975 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two windings provided on the stator of 1-phase induction motor, one main winding and the other auxiliary winding are connected through inductive coupling in series in parallel either of these depending on the design of the motor through inductive coupling in series in parallel either of these depending on the design of the motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is 0.95 0.87 0.96 1.06 0.95 0.87 0.96 1.06 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1/(1-S) S 1-S 1/S 1/(1-S) S 1-S 1/S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase slip ring induction motor is wound for 4 poles on stator and 6 poles on the rotor. When 3-phase balanced voltage source at 50 Hz is applied, it will run at 750rpm zero speed 1500 rpm 1000 rpm 750rpm zero speed 1500 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following motor is preferred for belt conveyor? Synchronous motors. Reluctance motor. Universal motor. Slip ring induction motor. Synchronous motors. Reluctance motor. Universal motor. Slip ring induction motor. ANSWER DOWNLOAD EXAMIANS APP
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