SK Air Brake Test 10
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Based on 2024 SK commercial driver's licence manual
- Triple-checked for accuracy
- Updated for December 2024
questions
correct answers to pass
passing score
- With the ignition key on and air pressure dropped by intentionally applying the brakes, at what minimum pressure should the low warning system operate?
- Which of the following is not a part of the pre-trip inspection process for an air single unit?
- What is the primary function of the application pressure gauge in an air brake system?
- What is a crucial element to inspect after performing a slack adjustment on your air brake system?
- Can you describe the parking brake valve control found in most commercial vehicles?
- Upon reconnecting the air lines and charging the trailer, what is the maximum air loss you should observe within one minute of a full foot-brake application?
- Who needs to make sure that the brakes' slack adjusters are functioning correctly?
- What determines the extent of a driver's responsibility for making repairs to an air brake system?
- What are the draincocks in an air brake system used for?
- What is the main function of a quick release valve in an air brake system?
- When you stop your vehicle in a pull-out area before continuing down a steep hill, make sure that all of these are true EXCEPT
- Which of the following is not a step you would normally perform during the pre-trip inspection of a tractor-trailer's air brakes?
- If you are unable to properly adjust pushrod travel with any of the usual methods, what should you do?
- What should the cut-out pressure be during the governor operation pre-trip procedure for an air combination unit?
- Up to what length of stroke is the amount of force available at the push rod consistent?
- During a pre-trip inspection for an air combination unit, you make and hold a foot brake application with both the supply and service lines disconnected. What should you check for?
- 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?