Air Brakes #2 - Michigan Cdl

1 . Vehicles equipped with Anti-Lock Braking Systems (ABS) have ____ malfunction lamps to indicate when the ABS is not working.

Green Blue Yellow Click Here Full Cheat Sheet

2 . When leaving your vehicle unattended:

The parking brake should be used. The parking brake only needs to be used if the vehicle is parked on a slope. The parking brake should not be used, as it can damage the tires. Take a FREE Practice Test Now

3 . When leaving your vehicle unattended:

The parking brake must be always be used. The parking brake should never be used. Windows in the cab should be lowered. Take a FREE Practice Test Now

4 . A slack adjuster should move no more than ____ from where it is attached to the push rod.

Two inches Five inches One inch Take a FREE Practice Test Now

5 . During an applied leakage test, what is the maximum leakage rate that is safe for a single vehicle with air brakes?

10 psi in one minute 5 psi in one minute 3 psi in one minute Click Here Full Cheat Sheet

6 . What do the two systems of a dual air brake system share?

Hoses An air compressor Air tanks Take a FREE Practice Test Now

7 . An application pressure gauge shows:

How much air pressure is being applied to the brakes. How much air pressure is available. How much air pressure is required to stop a vehicle. Take a FREE Practice Test Now

8 . ABS brakes:

Help you avoid wheel lockup. Lock up your vehicle's wheels. Prevent your vehicle from accelerating when going uphill. Take a FREE Practice Test Now

9 . In a vehicle with dual air brakes, a leak in one system ____ the second system.

Will always affect May not affect Is caused by Click Here Full Cheat Sheet

10 . If you are braking on dry pavement while traveling at 55 mph, how much distance will brake lag add to your overall stopping distance?

32 feet 45 feet 20 feet Take a FREE Practice Test Now

11 . Friction in an S-cam brake is caused when the brake shoes and linings:

Press against the outside of the brake drum. Press against the inside of the brake drum. Push against each other. Take a FREE Practice Test Now

12 . You should test the low pressure warning signal by:

Turning on the engine and applying the trailer hand brake. Rapidly pressing and releasing the brake pedal. Removing wheel chocks and disengaging the parking brake. Take a FREE Practice Test Now

13 . To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:

Set the control to normal. Set the control to the off position. Set the control to the neutral position. Click Here Full Cheat Sheet

Study tip: Reduce your study time from hours to minutes with a DMV exam “Cheat Sheet” 99.2% of people who use the cheat sheet pass the FIRST TIME Click Here Full Cheat Sheet

14 . Brake linings should be:

Loose. Free of oil. Soft. Take a FREE Practice Test Now

15 . What does an air compressor do in an air brake system?

It pumps air into the air storage tanks. It fills the tires. It moves air to the back of the truck. Take a FREE Practice Test Now

16 . In a dual air brake system:

Air tanks are shared between both systems. Each system has its own air tanks. You must designate which system you are using. Take a FREE Practice Test Now

17 . When parked on a flat surface, you should:

Use wheel chocks to prevent your vehicle from moving. Not use wheel chocks. Use wheel chocks, but only if you have applied the parking brake. Click Here Full Cheat Sheet

18 . The leakage rate for a single vehicle with air brakes should be no more than ____ in one minute during a static leakage test.

1 psi 2 psi 3 psi Take a FREE Practice Test Now

19 . What do air brakes use to make the brakes work?

Compressed air Outside air Non-compressed air Take a FREE Practice Test Now

20 . The air storage tanks:

Hold only enough air for one braking cycle. Hold enough air for the brakes to be used several times if the compressor stops working. Do not hold air unless there is an emergency. Take a FREE Practice Test Now

21 . When leaving a vehicle unattended, a driver should:

Always set the parking brake. Only set the parking brake if the vehicle is parked on a slope. Deflate the tires by 10 percent. Click Here Full Cheat Sheet

22 . Air pressure should build up in a single air system within:

15 minutes. 12 minutes. Three minutes. Take a FREE Practice Test Now

23 . If air pressure drops to a level between ____, a visual low pressure warning signal should have already activated.

55 and 75 psi. 80 and 95 psi. 65 and 100 psi. Take a FREE Practice Test Now

24 . ____ make up the emergency brake system.

Only parts of the parking brake system Only parts of the service brake system Parts of the parking and service brake systems Take a FREE Practice Test Now

25 . Before driving a vehicle with air brakes, you should ensure that the ____ come on automatically when air pressure falls below 45 psi.

Spring brakes Parking brakes Air brakes Click Here Full Cheat Sheet