Question

expain a leveled digram and explain principal involved in this device

Answer 1

which is the device?
Please ask complete questions.

If your device is an AC generator or a transformer, then it works on the principle of Electromagnetic induction.

If your device is a DC motor, then it works on the principle that when current is passed through a conducting coil in a magnetic field, a force acts on the conductor die to which it rotates...

Thanks...

Answer 2

refer to the above ans