Manitoba Airbrake Practice Exam 2025 – Your All-in-One Guide to Mastering the Airbrake Test!

Question: 1 / 400

Explain what happens when a brake pedal is pressed.

The foot valve opens, allowing compressed air to enter the brake chambers, applying the brakes

When the brake pedal is pressed, the operation of the air brake system is initiated. The foot valve, also known as the brake pedal valve, opens up and allows compressed air from the air system to flow into the brake chambers. This influx of compressed air activates the brake mechanism, applying the brakes effectively.

The air pressure pushes against the diaphragm in the brake chamber, causing the brake shoes or pads to press against the brake drum or rotor, which slows down or stops the vehicle. The efficiency of this system relies on the availability of compressed air and the integrity of the brake components. Understanding this process is crucial for recognizing how air brakes function and ensuring proper maintenance and operation for safety on the road.

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The engine revs up to assist in braking

The brake disks heat up and expand

The tire pressure increases automatically

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