Differences between Transformer and Induction Motor
- Transformer is a electrical device which transfers electrical power from one circuit to another without changing its frequency.whereas Induction motor is a machine which converts the given electrical energy into mechanical energy.
- Transformer contains no moving parts and mostly Iron core is the medium for passage of flux. whereas Induction motor must contains air as the medium between stator and rotor.
- In induction motor due to air gap it draws more lagging current to magnetize the rotor field at starting and during operation. so it always operates at lagging power factor.whereas transformer can be operating at any type of power factor depends upon load.
- As there is no moving parts in transformer the efficiency of transformer is high. where as in induction motor mechanical losses are always present so its efficiency is low.
- In transformer frequency is constant for primary and secondary induced emfs. where as in induction motor the rotor induced emf frequency is slip times the stator frequency.