The principal of d c genrator?

A DC generator operates on the principle of electromagnetic induction, where a conductor (usually a coil of wire) rotates in a magnetic field to generate direct current (DC). When the coil spins, it cuts through magnetic lines of force, inducing an electromotive force (EMF) according to Faraday's law of induction. The direction of the induced current is determined by the direction of the magnetic field and the motion of the conductor, typically facilitated by a commutator that rectifies the alternating current generated in the coil into direct current. This process allows for the conversion of mechanical energy into electrical energy.