Electric current that flows in one direction, from positive to negative then reverses direction, from negative to positive.
A simple semiconductor device that permits flow of electricity in one direction but not the other.
A suspension components that connects the vehicle frame to the steering knuckle are axle housing and allows the up and down movement of the wheels.
The sprocket on the camshaft that is turned up by a chain or belt from the crankshaft. The camshaft sprocket has twice as many teeth as the cam shaft sprocket.