Air Brakes Sample Test C
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Air Brakes Sample Test C

For each question click the button in front of the answer you think is correct. When you are finished click "Check Answers" at the bottom of the page.

1. What is one kind of gauge that is required for vehicles with air brakes?
A An air temperature gauge.
B An air pressure gauge
C An oil pressure gauge.

2. What kind of warning signal is required on vehicles with air brakes?
A A high air pressure warning signal.
B A low air pressure warning signal.
C A changing air pressure warning signal.

3. What are the three types of low air pressure warning devices?
A A siren . . . or a horn . . . or 4-way flashers.
B A red light . . . or a buzzer . . . or a wigwag.
C An air horn . . . or an amber light . . . or a whistle.

4. What is used to turn on the stop lights in an air brakes system?
A An electric switch that works by air pressure
B A computer.
C A motion sensor in the wheels.

5. In normal driving parking and emergency brakes are usually held back by?
A Electric relay switches.
B Wheel chocks.
C Air pressure.

6. The effectiveness of the spring brakes depends on the adjustment of?
A Emergency brakes.
B Service brakes.
C Front wheel brakes.

7. Why do some buses have a separate air tank to release spring brakes?
A So you can move the vehicle in an emergency.
B To simplify servicing the air brake system.
C So that the brakes will release quicker.

8. What is a dual air brake system?
A Two separate air brake systems with a single set of brake controls.
B One air brake system with two sets of brake controls.
C Two separate air brake systems with two sets of brake controls.

9. What should you look for in checking an air compressor belt?
A Check for belts that are the wrong color.
B Check for belts that are not made of rubber.
C Check belts for excessive wear and cracks and tightness.

10. What should you do before checking free play in manual slack adjusters?
A Park in a secure location and remove all wheel chocks.
B Park on level ground so that the wheels will not have to be chocked.
C Park on level ground and chock the wheels and release parking brakes.


Score =
Correct answers:






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