Motor Encyclopedia: DC generator working principle

What is the working principle of the DC generator? Is the armature coil in the induction of alternating electromotive force, by reversing the role, so that from the end of the brush into the DC power.

Direction of induction electromotive force according to the right-hand rule to determine (magnetic induction line point to palm, thumb pointing in the direction of movement of the conductor, the other four fingers pointing is the direction of the induced electromotive force in a conductor).

The conductor the direction of force with the left hand dingze sure. This pair of electromagnetic force to form a moment of action in the armature, the torque in the rotary motor is called the electromagnetic torque, torque direction is counterclockwise, in an attempt to make the armature counter clockwise rotation. If the electromagnetic torque can overcome the resistance torque on the armature (such as the resistance torque caused by friction and other load torque), the armature can be rotated in an anti clockwise direction.