Q.1
A safety valve is set to open at ____ pounds per square inch (psi).
Q.2
An alcohol evaporator is especially important:
Q.3
An application pressure gauge shows:
Q.4
Friction in an S-cam brake is caused when the brake shoes and linings:
Q.5
If air pressure drops to a level between ____, a visual low pressure warning signal should have already activated.
Q.6
Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.
Q.7
How much distance will an air brake-equipped vehicle need to come to a complete stop if it is traveling at 55 mph under ideal driving conditions?
Q.8
Why should you regularly drain the air tanks?
Q.9
If the safety relief valve in the air brake system releases air:
Q.10
A low air pressure warning signal should activate:
Q.11
When parked on a flat surface, you should:
Q.12
Air brakes use ____ to function.
Q.13
A wig wag is:
Q.14
What can happen if the air pressure gets too low in an air brake system?
Q.15
The leakage rate for a single vehicle with air brakes should be no more than ____ in one minute during a static leakage test.
Q.16
Which of the following is not part of a vehicle’s air brake system?
Q.17
Vehicles equipped with Anti-Lock Braking Systems (ABS) have ____ malfunction lamps to indicate when the ABS is not working.
Q.18
Air storage tanks:
Q.19
The parking brake in a newer vehicle is applied by:
Q.20
What helps prevent wheel lockup when braking?
Q.21
If the safety relief valve in an air brake system is releasing air:
Q.22
In a dual air brake system, if one air system is very low on pressure:
Q.23
What kind of force do emergency brakes use?
Q.24
When leaving a vehicle unattended, a driver should:
Q.25
The ____ between an air compressor and reservoir tank prevents air from escaping if the air compressor has a leak.
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