According to the asynchronous machine working principle; In which operating mode does the asynchronous machine, which is energized and stopped with the rotor locked, operates? A) Engine running B) Generator working C) Transformer working D) Brake working
According to the asynchronous machine working principle; In which operating mode does the asynchronous machine, which is energized and stopped with the rotor locked, operates?
A) Engine running
B) Generator working
C) Transformer working
D) Brake working
The working principle of an asynchronous motor involves creating an induced current in a conductor when the latter cuts of the lines of force in a magnetic field. Thus, it is called an “induction motor." The combination of both the induced current and the magnetic field exerts a certain driving force on the motor rotor.
A voltage is applied to the stator winding. We observe variable magnetic fluxes for each phase, which gets offset by 120 degrees in relation to each other. The total resultant flux is obtained by rotation and creates an EMF inside the conductors of the rotor. There appears a current, which gets to be with the resulting flow, creating a starting torque that causes the rotor to rotate.
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