Air Brakes - Wyoming Cdl

1 . 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. Click Here Full Cheat Sheet

2 . The air pressure in a dual air brake system should build from 85 to 100 psi within:

Two minutes. 15 seconds. 10 minutes. 45 seconds. Take a FREE Practice Test Now

3 . To stop a vehicle using air brakes:

The brake pedal should be pressed. The brake pedal should be lifted. The brake knob should be pulled out. The brake knob should be pushed in. Take a FREE Practice Test Now

4 . If the low pressure warning light comes on while you are driving:

Braking will only be possible if there is still enough air in the tanks. You can apply the brakes 14 times before the air in the system runs out. You should continue to drive normally and check the brake system when it is convenient. You should stay at least 100 feet away from other vehicles. Take a FREE Practice Test Now

5 . Which part of the truck is the air compressor connected to?

The transmission The engine The radiator The door latch Click Here Full Cheat Sheet

6 . On flat surfaces, wheel chocks:

Can be used to prevent a parked vehicle from moving. Make it easier for a parked vehicle to roll. Should only be used on the front driver's side tire. Take a FREE Practice Test Now

7 . What is brake lag?

The time required for the brakes to work after the brake pedal is pushed The distance between the brake pedal’s resting position and the floor The amount of air pressure used to stop a vehicle How faded the brakes are Take a FREE Practice Test Now

8 . When traveling down a steep downgrade:

The air brakes should be used. Shift into a lower gear, then use brakes to supplement the braking effect of the engine. The vehicle should be continually downshifted in the place of using the brakes. The vehicle should be driven on the shoulder. Take a FREE Practice Test Now

9 . Do not use the parking brake when parking if:

The brakes are very hot. The brakes are very cold. There is snow on the ground. There is water on the ground. Click Here Full Cheat Sheet

10 . If using spring brakes when hauling a heavy load, a complete stop will:

Be impossible. Take a long time. Take a short amount of time. Take a FREE Practice Test Now

11 . When only the tractor is equipped with an Anti-Lock Braking System (ABS):

There is a decreased risk of jackknifing. There is an increased risk of jackknifing. The brakes will not work as effectively as they would without ABS. The brakes will become more sensitive. Take a FREE Practice Test Now

12 . On newer vehicles, how do you put on the parking brake?

Move a lever to the right. Push in the yellow, diamond-shaped knob. Pull out the yellow, diamond-shaped knob. Pull up on the steering column. Take a FREE Practice Test Now

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

15 minutes. 12 minutes. Three minutes. One minute. 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 . What do the two systems of a dual air brake system share?

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

15 . 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. Take a FREE Practice Test Now

16 . When the spring brakes are activated in a vehicle with air brakes, you should never:

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

17 . Which of the following is not a part of an air brake system?

A service brake system A parking brake system An emergency brake system An axle brake system Click Here Full Cheat Sheet

18 . Anti-Lock Braking Systems (ABS):

Reduce normal braking capacity. Are equipped in addition to other braking systems and do not reduce normal braking power. Are not effective on larger vehicles. Are illegal in some states. Take a FREE Practice Test Now

19 . How is the parking brake released?

By tapping on the brake pedal three times By pushing in the brake control knob By engaging the accelerator By tapping the accelerator twice Take a FREE Practice Test Now

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

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

21 . What color light indicates a vehicle's ABS is not working?

Green Blue Yellow Click Here Full Cheat Sheet

22 . When you need to stop in an emergency, you should:

Lock the wheels and skid to a stop. Stop in a way that keeps your vehicle in a straight line. Stop in a way that turns your vehicle. Expect your vehicle to slow down more quickly than usual. Take a FREE Practice Test Now

23 . Pressing and releasing the brake pedal unnecessarily can:

Release air faster than it can be replaced. Add more air to a brake system. Make the brake pedal harder to depress. Create a loud noise. Take a FREE Practice Test Now

24 . Air tank drains should:

Only be used by mechanics. Only be used when it is wet outside. Be used to drain the tanks completely. Take a FREE Practice Test Now

25 . The ____ tells a driver how much pressure is in the air tanks.

Application pressure gauge Air compressor governor Supply pressure gauge Drum brake Click Here Full Cheat Sheet