Q.1
In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.
Q.2
During an applied leakage test, the maximum leakage rate for a triple combination vehicle is ____ in a minute.
Q.3
What kind of force do emergency brakes use?
Q.4
Truck tractors with air brakes built on or after March 1, 1997 must have:
Q.5
When an S-cam turns inside a brake drum, the S-cam:
Q.6
The parking brake in a newer vehicle is applied by:
Q.7
When parking, you should not use the parking brake if:
Q.8
Failing to drain air tanks could result in:
Q.9
Having ABS on only one axle:
Q.10
Once the air tanks are at an air pressure level of 125 psi, the air compressor governor will:
Q.11
Brake linings should be:
Q.12
If the safety relief valve in the air brake system releases air:
Q.13
When operating a vehicle with a dual air brake system, the driver should:
Q.14
You should test the low pressure warning signal by:
Q.15
Friction in an S-cam brake is caused when the brake shoes and linings:
Q.16
Before driving a vehicle with air brakes, you should ensure that the ____ come on automatically when air pressure falls below 45 psi.
Q.17
A ____ allows a driver to gradually apply spring brakes.
Q.18
A slack adjuster should move no more than ____ from where it is attached to the push rod.
Q.19
If the low air pressure warning signal comes on in a vehicle with air brakes, the driver should:
Q.20
If an air compressor is belt-driven, the belt should be routinely checked to ensure that it is:
Q.21
What tells you how much pressure is in your vehicle's air tanks?
Q.22
A low air pressure warning signal should activate:
Q.23
What helps prevent wheel lockup when braking?
Q.24
If the safety relief valve in an air brake system is releasing air:
Q.25
If air pressure drops to a level between ____, a visual low pressure warning signal should have already activated.
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