Air Brakes - Hawaii Cdl

1 . 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

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 . Why do large vehicles use air brakes?

Other brake systems squeak too loudly. Air brakes are very effective systems. Other braking systems are hard to come by. Take a FREE Practice Test Now

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

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

5 . 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

6 . Braking mechanisms are located inside:

The fifth wheel. A brake drum. The landing gear. Take a FREE Practice Test Now

7 . 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

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

Turn on the lights. Turn off the vehicle. Push down the brake pedal. Take a FREE Practice Test Now

9 . ABS brakes:

Help you avoid wheel lockup. Lock up your vehicle's wheels. Prevent your vehicle from accelerating when going uphill. Click Here Full Cheat Sheet

10 . ____ 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

11 . What is often found in compressed air?

Water Cardboard Brake fluid Take a FREE Practice Test Now

12 . An air compressor governor controls:

When the air compressor pumps air into the air storage tanks. How fast air is pumped into the air storage tanks. The temperature of the air pumped into the air storage tanks. Take a FREE Practice Test Now

13 . If the safety relief valve in the air brake system releases air:

The compressor needs more air. The air pressure has become too high. The brakes are fully operational. Click Here Full Cheat Sheet

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

Green Blue Yellow Take a FREE Practice Test Now

15 . During an applied leakage test, the maximum leakage rate for a triple combination vehicle is ____ in a minute.

2 psi 4 psi 6 psi Take a FREE Practice Test Now

16 . Some air brake systems introduce alcohol into the system to:

Make the brakes work without squeaking. Prevent ice from forming in the brake system. Prevent people from breathing the air from the system. Take a FREE Practice Test Now

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

15 minutes. 12 minutes. Three minutes. Click Here Full Cheat Sheet

18 . 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

19 . 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

20 . When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:

Every three hours. Every day. Every other week. Take a FREE Practice Test Now

21 . What kind of brakes do most newer heavy-duty trucks use?

Single air brakes Dual air brakes Triple air brakes Click Here Full Cheat Sheet

22 . If the safety relief valve in the air brake system releases air:

The compressor needs more air. There is something wrong with the brakes. You may continue driving. Take a FREE Practice Test Now

23 . 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. Take a FREE Practice Test Now

24 . 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

25 . 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