Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 25 Hz 100 Hz 0 Hz 50 Hz 25 Hz 100 Hz 0 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC machine windings are short pitched None of these full pitched either of these short pitched None of these full pitched either of these 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 240 rpm. 470 rpm. 450 rpm. 540 rpm. 240 rpm. 470 rpm. 450 rpm. 540 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC Motor requires 3 point starter? Shunt motor. Shunt motor as well as compound motors. Shunt, compound and series motor. Series motor. Shunt motor. Shunt motor as well as compound motors. Shunt, compound and series motor. Series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An IM cannot run at synchronous speed because rotor torque will not be produced. none of above. induction motor will become synchronous motor. air friction will prevent it. rotor torque will not be produced. none of above. induction motor will become synchronous motor. air friction will prevent it. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ induction motor power factor at starting is low as compared to that while running. none of them. power factor at starting is high as compared to that while running. power factor at starting in the same as that while running. power factor at starting is low as compared to that while running. none of them. power factor at starting is high as compared to that while running. power factor at starting in the same as that while running. ANSWER DOWNLOAD EXAMIANS APP
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