Q.1
A safety valve is set to open at ____ pounds per square inch (psi).
Q.2
In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.
Q.3
A dual air brake system:
Q.4
An alcohol evaporator in an air brake system:
Q.5
While driving, ____ generally holds spring brakes in place.
Q.6
What helps prevent wheel lockup when braking?
Q.7
Which of the following is not part of a vehicle’s air brake system?
Q.8
The air storage tanks:
Q.9
The leakage rate for a single vehicle with air brakes should be no more than ____ in one minute during a static leakage test.
Q.10
During an applied leakage test, the maximum leakage rate for a triple combination vehicle is ____ in a minute.
Q.11
If air pressure drops to a level between ____, a visual low pressure warning signal should have already activated.
Q.12
Before driving a vehicle with air brakes, you should ensure that the ____ come on automatically when air pressure falls below 45 psi.
Q.13
What does an air compressor do in an air brake system?
Q.14
When parked on a flat surface, you should:
Q.15
To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:
Q.16
Air brakes use ____ to function.
Q.17
When stopping in an emergency situation, you should:
Q.18
Air tank drains should:
Q.19
In a vehicle with dual parking control valves, a separate air tank can be used:
Q.20
When traveling down a steep downgrade:
Q.21
If the safety relief valve in an air brake system is releasing air:
Q.22
A slack adjuster should move no more than ____ from where it is attached to the push rod.
Q.23
You should ____ if the low pressure warning signal activates while you are driving.
Q.24
A wig wag is:
Q.25
Having ABS on only one axle:
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