MB Air Brake Test 10 2025

1. Which of the following is not a defect associated with accessible air lines?
2. 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?
3. In Manitoba, who is allowed to perform brake re-adjustments on manual slack adjusters?
4. Do automatic slack adjusters call for routine re-adjustment?
5. Which of the following is not considered a defect when examining brake chambers?
6. In a tug test, which of the following is not a major defect?
7. When you're examining all brake drums and rotors, what do you look for?
8. When inspecting the tractor protection system, what is not a major defect?
9. What needs to be done to turn the adjusting bolt in most manual slack adjusters that have a spring-loaded locking sleeve?
10. If the brake chamber's pushrod stroke surpasses the adjustment limit, is the brake out of adjustment?
11. What does it indicate if automatic slack adjusters require regular re-adjustments?
12. Each end of an axle should have brake chambers of what size to ensure brake forces are balanced?
13. What is not a required step when inspecting brake chambers?
14. Why are automatic slack adjusters used in a braking system?
15. How should brakes with manual slack adjusters be re-adjusted if they are out of adjustment?
16. Does a driver with an existing air brake endorsement need to go through any further testing to acquire the S endorsement?
17. To bring a vehicle to a halt in the same distance when its weight has been doubled, the braking force should be what?
18. What powers the compressor in a vehicle's air brake system?
19. Where does a compressor pump the air in a vehicle's braking system?
20. What is leveraged to gain a mechanical advantage in a braking system?
21. What causes the wheels to stop spinning in a braking system?
22. What could result from improperly adjusted brakes on one or two wheels of a vehicle?
23. What influences the distance needed to bring a vehicle to a complete stop?
24. What is the device that provides compressed air in a brake system known as?
25. What is a common device used to obtain a mechanical advantage in braking systems?
26. If a vehicle's compressor is belt-driven, what should you inspect the belts for?
27. What term is used to denote air that has been forced into a smaller space?
28. What is transmitted through an air brake system using compressed air?
29. Where does the heat generated from the friction between brake drums and linings go?
30. Which statement is untrue about the stopping distance?
31. In an air brake system, what does the unloading stage signify?
32. If a vehicle's speed is doubled, by how much must the braking force be increased to stop in the same distance?
33. What is the optimal operating temperature for most brake linings?
34. Approximately how long does it take from identifying a hazard to applying the brakes?
35. What is the maximum operating temperature for most brake linings?
36. Above what pressure will the compressor not have to pump air in the system?
37. The compressor must start pumping air into the system by the time that air pressure falls to
38. Which of the following is not one of the main components in a basic air brake system capable of stopping a vehicle?
39. Overheating in brakes could lead to what adverse condition?
40. 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?
41. What term is used to describe the time taken for air to travel through a properly maintained air brake system?
42. When brakes generate heat, where does this heat eventually go?
43. Which component controls when the compressor pumps air by monitoring the minimum and maximum air pressure in the system?
44. What does the friction between brake drums and linings produce in a braking system?
45. What is the determining factor for the amount of heat the brake drums can absorb?
46. What does the term loading stage signify in an air brake system?
47. Why is the sensation different when operating air treadles compared to hydraulic brakes?
48. What is the consequence of not maintaining slack adjusters within their specified limits?
49. What are the alternate names for the primary and secondary reservoirs in an air brake system?
50. What accumulates at the bottom of the supply reservoir in an air brake system?