1.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to
2.
What turns on the electrical stop light switch in an air brake system?
3.
You must make a quick emergency stop. You should brake so you
4.
If the air system should develop a leak, what will keep the air in the air tanks?
5.
If your vehicle is equipped with an alcohol evaporator, every day during the winter weather you should
6.
Why should you not fan the brakes on and off during long downgrades?
7.
The air supply pressure gauge shows the driver how much pressure
8.
The vehicle must have a warning device which comes on when the air pressure in the service air tanks falls below
9.
The air compressor governor controls
10.
Which of the following answers is most correct about using brakes on a long and/or steep downgrade?
11.
During normal operations, the parking and emergency brakes are usually held back by
12.
What will determine how effective the spring emergency brakes or the parking brakes work?
13.
If your vehicle has an alcohol evaporator, it is there to
15.
A combination vehicle air brake system cannot leak more than ______ psi per minute with the engine off and the brakes released.
16.
Air brake equipped vehicles must have
17.
In air brake equipped vehicles, you use the parking brakes when?
18.
Which of the following statements about brakes is true?
19.
When using the parking brakes or emergency brakes, what type of pressure is being used?
20.
Which brake system applies and releases the brakes when the driver uses the brake pedal?
21.
Air loss in a single vehicle (not a combination unit) should not be more than ______ with the engine off and the brakes on.
22.
The air loss rate for a straight truck or bus with the engine off and the brakes applied should not be more than
23.
The most common type of foundation brake found on heavy commercial vehicles is
24.
Which of the following is O.K. to find in the air brake system?
25.
How do you check the free play in manual slack adjusters?
26.
When a failure occurs in the service brake system, the system you need to stop the vehicle is the
27.
To use the stab braking technique during emergency braking, you
28.
Three different systems are found on modern air brake systems; service brakes, parking brakes, and the
29.
The purpose of engine retarders is to
30.
A straight truck or bus air brake system cannot leak more than ______ psi per minute with the engine off and the brakes released.
