Red Seal Truck and Transport Mechanic Practice Exam

Which system in a truck is responsible for distributing power to the wheels?

1. Suspension system

2. Transmission system

3. Steering system

4. Electrical system

The correct answer is: Transmission system

The transmission system is responsible for distributing power to the wheels in a truck. This system plays a crucial role in transferring engine power through various gears to the drive axle, allowing for the appropriate torque and speed at the wheels according to driving conditions. When the engine produces power, it is sent to the transmission, which adjusts the power output based on factors such as vehicle speed and load. By shifting gears, the transmission enables the truck to manage different driving situations effectively, ensuring that the wheels receive the appropriate amount of power for acceleration, maintaining speed, or climbing hills. In contrast, the other systems mentioned serve different functions: the suspension system supports the vehicle's weight and provides ride comfort by absorbing shocks from the road; the steering system allows the driver to control the direction of the vehicle; and the electrical system powers various components such as lights, instrumentation, and other electrical devices. Each of these systems is vital for the truck's overall operation but does not directly handle the distribution of power to the wheels like the transmission system does.