All of the following are examples of a vehicle’s unsprung weight, except: athe rear axle. bthe transmission. cthe wheels. dthe steering knuckle.

The unsprung weight of a vehicle refers to the parts of the vehicle that are not supported by the suspension, such as the wheels, the brakes, and the rear axle. These parts are directly connected to the road and move up and down with the surface of the road.

a) The rear axle is part of the unsprung weight because it is directly connected to the wheels and moves with the road surface.

c) The wheels are also part of the unsprung weight because they are in direct contact with the road.

d) The steering knuckle is part of the unsprung weight because it is a component of the steering system that is directly connected to the wheels.

b) However, the transmission is not part of the unsprung weight. It is part of the sprung weight, which includes all the parts of the vehicle that are supported by the suspension, such as the engine, the body, and the transmission. The sprung weight is isolated from the road surface by the suspension system. Therefore, the correct answer is b) the transmission.