Q.1
What is often found in compressed air?
Q.2
If an air compressor is belt-driven, the belt should be routinely checked to ensure that it is:
Q.3
Braking mechanisms are located inside:
Q.4
The ____ are activated by an electric switch that is triggered by the brake pedal.
Q.5
During an applied leakage test, the maximum leakage rate for a triple combination vehicle is ____ in a minute.
Q.6
If using spring brakes when hauling a heavy load, a complete stop will:
Q.7
If the safety relief valve in the air brake system releases air:
Q.8
A safety valve is set to open at ____ pounds per square inch (psi).
Q.9
Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.
Q.10
The ____ between an air compressor and reservoir tank prevents air from escaping if the air compressor has a leak.
Q.11
In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.
Q.12
Having ABS on only one axle:
Q.13
A wig wag is:
Q.14
Using the brakes creates heat. If too much heat is produced:
Q.15
During an applied leakage test, the maximum leakage rate for a double combination vehicle is ____ in a minute.
Q.16
What do the two systems of a dual air brake system share?
Q.17
A low air pressure warning signal should activate:
Q.18
When stopping in an emergency situation, you should:
Q.19
A dual air brake system:
Q.20
When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:
Q.21
What color light indicates a vehicle's ABS is not working?
Q.22
When the spring brakes are on, you should never:
Q.23
During a static leakage test, what is the maximum leakage rate that is safe for a double combination vehicle?
Q.24
In a vehicle with dual air brakes, a leak in one system ____ the second system.
Q.25
Why should you regularly drain the air tanks?
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