Electrical Machines Brushes are always placed on--------------- , in order to achieve sparkles commutation? either GNA or MNA MNA GNA None of these either GNA or MNA MNA GNA None 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 450 rpm. 540 rpm. 470 rpm. 240 rpm. 450 rpm. 540 rpm. 470 rpm. 240 rpm. 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 0.87 0.96 0.95 1.06 0.87 0.96 0.95 1.06 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following motor is preferred for belt conveyor? Slip ring induction motor. Synchronous motors. Universal motor. Reluctance motor. Slip ring induction motor. Synchronous motors. Universal motor. Reluctance motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, which of these parameters remain the same whether it runs as a DC motor or a DC generator? Can not be determined. Induced emf. Mechanical power. Armature current. Can not be determined. Induced emf. Mechanical power. Armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Satisfactory commutation of DC machine requires brushes should be of proper grade and size. All of these smooth, concentric commutator properly undercut. brushes should smoothly run in the holders. brushes should be of proper grade and size. All of these smooth, concentric commutator properly undercut. brushes should smoothly run in the holders. ANSWER DOWNLOAD EXAMIANS APP
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