QC Air Brake Test 6
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Based on 2024 QC commercial driver's licence manual
- Triple-checked for accuracy
- Updated for October 2024
questions
correct answers to pass
passing score
- What kind of supplementary brake is most commonly found in the market?
- To connect brake hose couplers, they need to be joined at what angle and then rotated until the hoses align?
- When multiple vehicles are coupled together, how many brake hose couplers does each vehicle possess?
- High heat produced by the friction between linings and drums or discs can cause the linings to do what?
- If you engage the parking brake control knob, what happens to the wheels of the tractor and the wheels of the trailer or semi-trailer?
- What do brake drums do when exposed to high temperatures?
- When do brake linings usually diminish in their efficacy?
- Engine brakes and retarders are triggered by what means?
- Regardless of the kind of engine brake or retarder installed in your vehicle, the braking power always applies to which wheels?
- What is the most frequent type of brake found on heavy vehicles?
- Some vehicle manufacturers surpass this standard and calibrate the low air pressure warning threshold at what pressure to provide the driver more warning time?
- When you double your speed, how does this impact the braking power required?
- To relieve overheating, you can...
- If the load doubles the entire weight of your vehicle, the stopping or braking distance is...
- What colour are the brake hoses that supply air to the trailer brake chambers for the service brakes?
- How long does it typically take for air to traverse the system?
- To bring a vehicle to a halt in the same distance when its weight has been doubled, the braking force should be what?
- What powers the compressor in a vehicle's air brake system?
- Where does a compressor pump the air in a vehicle's braking system?
- What is leveraged to gain a mechanical advantage in a braking system?
- What causes the wheels to stop spinning in a braking system?
- What could result from improperly adjusted brakes on one or two wheels of a vehicle?
- What influences the distance needed to bring a vehicle to a complete stop?
- What is the device that provides compressed air in a brake system known as?
- What is a common device used to obtain a mechanical advantage in braking systems?
- If a vehicle's compressor is belt-driven, what should you inspect the belts for?
- What term is used to denote air that has been forced into a smaller space?
- What is transmitted through an air brake system using compressed air?
- Where does the heat generated from the friction between brake drums and linings go?
- Which statement is untrue about the stopping distance?
- In an air brake system, what does the unloading stage signify?
- If a vehicle's speed is doubled, by how much must the braking force be increased to stop in the same distance?
- What is the optimal operating temperature for most brake linings?
- Approximately how long does it take from identifying a hazard to applying the brakes?
- What is the maximum operating temperature for most brake linings?
- Above what pressure will the compressor not have to pump air in the system?
- The compressor must start pumping air into the system by the time that air pressure falls to
- Which of the following is not one of the main components in a basic air brake system capable of stopping a vehicle?
- Overheating in brakes could lead to what adverse condition?
- When both the weight and speed of a vehicle are doubled, the braking force must be adjusted by what factor to stop in the same distance?
- What term is used to describe the time taken for air to travel through a properly maintained air brake system?
- When brakes generate heat, where does this heat eventually go?
- Which component controls when the compressor pumps air by monitoring the minimum and maximum air pressure in the system?
- What does the friction between brake drums and linings produce in a braking system?
- What is the determining factor for the amount of heat the brake drums can absorb?
- What does the term loading stage signify in an air brake system?
- Why is the sensation different when operating air treadles compared to hydraulic brakes?
- What is the consequence of not maintaining slack adjusters within their specified limits?
- What are the alternate names for the primary and secondary reservoirs in an air brake system?
- What accumulates at the bottom of the supply reservoir in an air brake system?