MB Air Brake Test 10
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Based on 2024 MB commercial driver's licence manual
- Triple-checked for accuracy
- Updated for October 2024
questions
correct answers to pass
passing score
- Which of the following is not a defect associated with accessible air lines?
- If an air pressure build-up rate (compressor operation) inspection reveals that the air-pressure build-up time exceeds two minutes, what kind of defect is it?
- In Manitoba, who is allowed to perform brake re-adjustments on manual slack adjusters?
- Do automatic slack adjusters call for routine re-adjustment?
- Which of the following is not considered a defect when examining brake chambers?
- In a tug test, which of the following is not a major defect?
- When you're examining all brake drums and rotors, what do you look for?
- When inspecting the tractor protection system, what is not a major defect?
- What needs to be done to turn the adjusting bolt in most manual slack adjusters that have a spring-loaded locking sleeve?
- If the brake chamber's pushrod stroke surpasses the adjustment limit, is the brake out of adjustment?
- What does it indicate if automatic slack adjusters require regular re-adjustments?
- Each end of an axle should have brake chambers of what size to ensure brake forces are balanced?
- What is not a required step when inspecting brake chambers?
- Why are automatic slack adjusters used in a braking system?
- How should brakes with manual slack adjusters be re-adjusted if they are out of adjustment?
- Does a driver with an existing air brake endorsement need to go through any further testing to acquire the S endorsement?
- 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?