Electrical engineering

A generator is an electrical machine that converts mechanical energy into electrical energy.  Generators are generally classified as below: Synchronous generator Vs. Induction generator The difference between  Synchronous generator and Induction generator is as mentioned below: 1) Synchronous generator The field is excited by an external D.C excitation and the rotor is connected to prime mover. The synchronous generator always operates at synchronous speed (Ns). Since, the field is excited by an external D.C source, the synchronous generator can deliver both the real/true and reactive power. Real power is being supplied by prime mover input and reactive power is supplied by external D.C excitation connected to the field.  Hence, both real and reactive supplied can be controlled. Since, the reactive power can be fully controlled, the synchronous generator can be operated at all range of power factors (Lagging, Leading, Unity power factor). Efficiency is good. Suitable for conventional p