slip-ring motor

synchronous motor

squirrel-cage induction-motor

single-phase motor

Faraday's law

Rotating magnetic field

Fleming's right-hand rule

Ohm's law

the same as the synchronous speed

higher than the synchronous speed

lesser than the synchronous speed

determined by the frequency and the number of poles

interchange all the three line connections

reverse the polarity of the rotor's circuit

increase the resistance of the rotor's circuit

interchange any two out of the three line connections

slip-rings

rotor windings

stator windings

rotating part