BC Air Brake Test 6
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Based on 2024 BC commercial driver's licence manual
- Triple-checked for accuracy
- Updated for October 2024
questions
correct answers to pass
passing score
- If your vehicle is equipped with automatic slack adjusters, why must you fully apply the service brakes regularly?
- Wedge brakes are designed to be
- Where are the air brake chambers located?
- What does an ABS system do?
- When you are going at twice the speed, your service brakes will need to work _________ to stop your vehicle.
- Which of these significantly decreases the braking force produced at the wheel?
- Which type of trailer can be towed before the service tanks are full?
- In determining how well your air brake system works, which is NOT a significant factor?
- In large commercial vehicles, most air brake systems use automatic valves to
- Where are a vehicle's air tanks located?
- What is the "cut-in" level?
- Your vehicle passes the tug test of the parking brakes if
- If the brake chambers on opposite sides of an axle are of different sizes, the result may be
- To check the brake chambers for leaks, you should
- in a drum brake, the brake lining is fastened to
- Compared with the service tanks, how much moisture should the supply tank discharge?
- If the low air pressure warning activates, you should
- To inspect an air brake system, you should wear
- The best way to reduce rough and abrupt braking is to
- What are the service brakes used for?
- Manufacturers recommend draining moisture and oil in an air brake system on a _______ basis.
- What is the "cut-out" level?
- What happens to the foot valve when you press down on the brake pedal?
- Why is it important to know which parts of the air brake system exhaust air?
- Which of these can strain your vehicle's braking system?
- What powers the air compressor?
- Which of these can contaminate a brake system's air lines?
- Do air brake chambers come in a variety of sizes?
- The air brake chamber includes all of the following parts EXCEPT
- Air resistance increases what parameter?
- What does the term "brake lag time" mean?
- Is it possible for brake drums to expand and disengage from the shoes?
- Which of these statements is accurate regarding the stopping force at the wheel?
- Which of these is used to measure whether the brake is within proper adjustment tolerance?
- What does the movement of the piston create in the cylinder of the compressor?
- Are air brake systems designed to be tolerant of minor leaks?
- What is the common brake lag time from when you apply the brake pedal to when the brake is actually applied at the wheel?
- "Brake fade" refers to which scenario?
- Which of the following can distinguish a long stroke brake chamber from a regular (short stroke) brake chamber?
- The angle between the slack adjuster and the pushrod is approximately
- What common method is used on heavy trucks to prevent the compressor from overheating?
- What does the term "foundation brake" mean in the context of air brake systems?
- What is the function of the air brake chamber?
- Why would a vehicle operator opt for air brakes?
- What function does the delivery line perform in an air brake system?
- Air brakes are primarily used as a replacement for which other type of brake system?
- When does the air brake system's compressor produce air?
- How much pushrod force does an air pressure of 100 psi generate in a Type 30 brake chamber?
- What causes the extension of the pushrod out of the brake chamber?
- What does the resistance of air in an air brake system result in?