Air Brakes - Montana Cdl

1 . Failing to drain air tanks could result in:

Water accumulations freezing and causing brake failure. Squishy brakes. Too much air collecting in the tanks. Click Here Full Cheat Sheet

2 . Brakes may get out of adjustment:

If they are too hot. In colder weather. If they are used. If they get wet. Take a FREE Practice Test Now

3 . Using the brakes creates heat. If too much heat is produced:

The brakes may not work. The brakes may squeak more than usual. The brakes will brake unevenly. Take a FREE Practice Test Now

4 . What do anti-lock brakes do?

Help a driver avoid wheel lockup Lock up the front wheels Prevent a vehicle from accelerating while traveling uphill Prevent a vehicle from accelerating while traveling downhill Take a FREE Practice Test Now

5 . Once the air tanks are at an air pressure level of 125 psi, the air compressor governor will:

Stop the compressor from pumping air. Release air from the tanks. Begin pumping air into the tanks. Click Here Full Cheat Sheet

6 . Front brake limiting valves were intended to:

Prevent the front tires from skidding. Prevent the front tires from overheating. Create equal brake usage. Remove uncertainty when applying the brakes. Take a FREE Practice Test Now

7 . Truck tractors with air brakes built on or after March 1, 1997 must have:

An Anti-Lock Braking System (ABS). Bluetooth. A GPS. Take a FREE Practice Test Now

8 . Brake fading is caused when:

Brakes are not used often enough. Brakes overheat. Brakes are too cold. Brakes are wet. Take a FREE Practice Test Now

9 . The ____ between an air compressor and reservoir tank prevents air from escaping if the air compressor has a leak.

Slack adjuster One-way check valve Tractor protection valve Click Here Full Cheat Sheet

10 . 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

11 . In a dual air brake system, if one air system is very low on pressure:

None of the brakes will work at all. Either the front or rear brakes will not be fully operable. There is usually no noticeable effect. Take a FREE Practice Test Now

12 . What tells you how much pressure is in your vehicle's air tanks?

The supply pressure gauge The ABS malfunction lamp The tractor protection valve Take a FREE Practice Test Now

13 . What should happen before the air pressure in an air brake system tank falls below 55 psi?

The warning light should activate. The vehicle will be unable to shift out of gear. The front lights should flash. 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 . To stop in a vehicle that uses air brakes, the driver should:

Pull the air brake lever. Engage the brake lever. Push the brake pedal down. Pull the brake pedal up. Take a FREE Practice Test Now

15 . An alcohol evaporator in an air brake system:

Makes the brakes work without squeaking. Prevents ice from forming in the braking system. Lubricates parts of the braking system. Take a FREE Practice Test Now

16 . What can happen if the air pressure gets too low in an air brake system?

The brakes may squeak. The brakes may stop working. The brakes may be sluggish. Take a FREE Practice Test Now

17 . Braking mechanisms are located ____ a brake drum.

Outside Inside Next to On top of Click Here Full Cheat Sheet

18 . A low air pressure warning signal should activate:

When tank pressure falls below 120 psi. When tank pressure falls below 60 psi. When tank pressure falls below 10 psi. When tank pressure falls below 5 psi. Take a FREE Practice Test Now

19 . What color is the low air pressure warning light?

Green Orange Red Purple Take a FREE Practice Test Now

20 . During a walk-around inspection, ensure there are no cracks on the brake drums that are more than ____ of the width of the friction area.

One half One quarter One third One tenth Take a FREE Practice Test Now

21 . When you are about to start down a hill, you should switch into a ____ gear.

Higher Faster Lower Click Here Full Cheat Sheet

22 . Why should you regularly drain the air tanks?

Because the air gets old and needs to be replaced Because compressed air contains some water and the water collects in the tanks To allow for a change in pressure Take a FREE Practice Test Now

23 . When you press the brake pedal in a vehicle with S-cam brakes, air pressure pushes out the rod and moves the:

Slack adjuster. Axle. Brake drum. Alcohol evaporator. Take a FREE Practice Test Now

24 . 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

25 . When the spring brakes are on, you should never:

Turn on the lights. Turn off the vehicle. Push down the brake pedal. Click Here Full Cheat Sheet