Electrical Machines The speed of rotating magnetic field of 8 pole 50 Hz induction motor is 750 rpm 1500 rpm 1000 rpm 3000 rpm 750 rpm 1500 rpm 1000 rpm 3000 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux is maximum in the following part of a DC motor: under the interpole. under leading pole tip. under trailing pole tip. pole core. under the interpole. under leading pole tip. under trailing pole tip. pole core. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has negative speed regulation? Cumulative compound motors Series motor Shunt motor Differential compound motor Cumulative compound motors Series motor Shunt motor Differential compound motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutation in a DC machine may be explained as a process by which electric current in a coil is reversed. by virtue of which emf is induced in the armature conductors. in which magnetic field is set up. how alternate flux affects the main field flux. by which electric current in a coil is reversed. by virtue of which emf is induced in the armature conductors. in which magnetic field is set up. how alternate flux affects the main field flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The introduction of interpoles in between the main poles improves the performance of a dc machine, because the flux waveform is improved with reduction in harmonics the interpoles produce additional flux to augment the developed torque a counter-emf is induced in the coil undergoing commutation the inequality of air-gap flux on the top and bottom halves of the armature is removed the flux waveform is improved with reduction in harmonics the interpoles produce additional flux to augment the developed torque a counter-emf is induced in the coil undergoing commutation the inequality of air-gap flux on the top and bottom halves of the armature is removed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalance 3 - Φ stator currents cause double frequency currents in the rotor. vibrations. All of these heating of rotor. double frequency currents in the rotor. vibrations. All of these heating of rotor. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS