Manitoba Airbrake Practice Exam

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Which of the following is not a main component of an air brake system?

Compressor
Brake valves
Air tanks
Fuel injectors

The correct answer is: Fuel injectors

The air brake system is designed to utilize compressed air to operate the braking mechanism on a vehicle. The main components of an air brake system include a compressor, which generates the compressed air needed for braking; brake valves, which control the flow of air to the brakes and allow the driver to apply or release braking pressure; and air tanks, which store the compressed air generated by the compressor for use when braking. Fuel injectors, on the other hand, are integral to the function of internal combustion engines, where they deliver fuel to the engine’s combustion chamber. They play no role in the operation of an air brake system, making them unrelated to the primary components necessary for braking. Understanding the specific functions of these components clarifies why fuel injectors do not belong in the context of air brake systems.