Q.1
What kind of brakes do most newer heavy-duty trucks use?
Q.2
The air pressure in a dual air brake system should build from 85 to 100 psi within:
Q.3
Anti-Lock Braking Systems (ABS):
Q.4
What color are ABS malfunction lamps?
Q.5
During an inspection, slack adjusters on S-cam brakes should not move more than:
Q.6
A low air pressure warning signal should activate:
Q.7
During a static leakage test, the maximum leakage rate for a double combination vehicle is:
Q.8
Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when:
Q.9
The air storage tanks:
Q.10
You should test the low pressure warning signal by:
Q.11
When traveling down a steep downgrade:
Q.12
Pressing and releasing a brake pedal unnecessarily can:
Q.13
If the brake pads rub against the brake drums and create too much heat:
Q.14
Where is the safety relief valve usually located?
Q.15
How should you test the low pressure warning signal?
Q.16
During an applied leakage test, the maximum leakage rate for a double combination vehicle is:
Q.17
What is often found in compressed air?
Q.18
In a newer vehicle, you apply the parking brake:
Q.19
Before driving a vehicle with air brakes, you should ensure that the ____ come on automatically when air pressure falls below 45 psi.
Q.20
Friction inside a brake drum is caused when the brake shoes and linings:
Q.21
What tells you how much pressure is in your vehicle's air tanks?
Q.22
A dual air brake system:
Q.23
What is removed when an air tank is drained?
Q.24
What do air brakes use to make the brakes work?
Q.25
When leaving a vehicle unattended, a driver should:
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