Wound rotor and squirrel-cage rotor
An electric motor has a stator and a rotor. The stator does not move. The rotor rotates inside the stator.
A universal motor is used to operate a food mixer.
The rotor in a DC motor rotates because the magnetic field in either the rotor or the stator is constantly changing. If it is a brush type DC motor, then the rotor field changes as the rotor moves to a new position on the commutator. If it is a brush-less type DC motor, then there is some circuitry associated with the stator that changes the stator field.
by adding external resistance to the shaft of rotor
universal motor r mostly used for domestic purpose applicatios like the vaccum cleaner,foodprocessors and mixeshair driers,coffee grinders,electric shavers etc....another applications for blowers.
No,look at the connection diagram for Universal motor. The Field and the armature windings are connected in series. But, in induction motor, the rotor end terminals are sorted by a kind of rings.That is rotor is apart from the supply.
An electric motor has a stator and a rotor. The stator does not move. The rotor rotates inside the stator.
A universal motor is used to operate a food mixer.
universal motor
Squirrel cage type is a type of Induction motor. It tells that the rotor is "squirrel cage" type. Another type of induction motor is with "slip ring" type of rotor. Squirrel cage type is most widely used Induction motor.
The rotor in a DC motor rotates because the magnetic field in either the rotor or the stator is constantly changing. If it is a brush type DC motor, then the rotor field changes as the rotor moves to a new position on the commutator. If it is a brush-less type DC motor, then there is some circuitry associated with the stator that changes the stator field.
The rotor (which is some type of magnet).
Wound-Rotor
Types of rotor-Salient pole or projected typeNon salient pole or cylindrical typeSalient type is used for low speed or medium speed motor where non salient type is used for high speed rotor.
by adding external resistance to the shaft of rotor
universal motor r mostly used for domestic purpose applicatios like the vaccum cleaner,foodprocessors and mixeshair driers,coffee grinders,electric shavers etc....another applications for blowers.
although this is not a chemistry question I do have an answer for you. A motor with copper bars is classified as a shaded pole motor. They are low torque motors and do not require any capacitors for run or start functions. hope that helped