The various types of starters used for starting a 3-phase induction motor are, Full Voltage Starting, Direct-on-line (DOL) starter (full voltage starting). Reduced Voltage Starting, Autotransformer starter. Star-delta starter (re…
The torque T, of an induction motor, is proportional to the product of stator flux per pole (Φ), rotor current (I), and the power factor of the rotor. The torque of an induction motor is due to the interaction of the rotor and st…
It is interesting to know how a single-phase induction motor can able to rotate when an initial rotation or starting torque is given to it. This can understand with the help of cross-field theory and double-revolving field theory…
When a single-phase ac supply is given to the single-phase stator winding, a sinusoidally pulsating magnetic field varying with time is produced. As the produced magnetic very two times in a cycle, therefore, no torque will be pr…
The losses in an induction motor are classified as, Constant losses, and Variable losses. Constant Losses : Constant losses are those which doesn't affect due to variation in load conditions on the motor. These losses rema…
Single-phase induction motors are not self-starting because there is no rotating magnetic field produced. It is not practicable to provide initial rotation to the rotor, manually. So in practice, some provision is made to provide…
