Air Brake Manual Quiz (Complete Summary)
Air Brake System Knowledge Quiz
Test your knowledge and understanding of air brake systems with our comprehensive quiz. Perfect for professionals and enthusiasts alike, this quiz covers essential aspects of air brake operation, maintenance, and safety regulations.
Key Features:
- 18 challenging multiple-choice questions
- Learn about air pressure limits, brake components, and maintenance practices
- Ideal for drivers, mechanics, and anyone interested in vehicle safety
At what psi does the low air warning switch activate?
20 psi
120-145 psi
60 psi
100 psi
At what psi does the compressor cut out/unload?
100 psi
20 psi
120-145 psi
60 psi
At what psi does the compressor enter into its pumping stage?
100 psi
20 psi
120-145 psi
60 psi
What is the minimum pressure at which the tractor protection system must be activated?
100 psi
60 psi
20 psi
120-145 psi
The maximum reservoir pressure loss through leaks in a combination unit is...
1 psi in 1 minute
1 psi in 4 minutes
4 psi in 1 minute
4 psi in 4 minutes
The maximum reservoir pressure loss through leaks in a single unit is...
1 psi in 4 minutes
1 psi in 1 minute
4 psi in 1 minute
4 psi in 4 minutes
How often should the reservoirs be drained of moisture and sludge accumulation?
Once per day when the vehicle is in use
In the mornings
Twice per day
Once per day, regardless of whether the vehicle is in use
Spring brakes are most effective as...
An aid to the service brakes
An air pressure operated brake
A parking brake
All answers are correct
What is the maximum allowable time for air pressure to rise from 85 to 100 psi?
2 minutes
4 minutes
60 seconds
10 minutes
What is the maximum push rod stroke length before force is lost?
1"
1 1/2"
3/4"
2"
Which best describes compounding the brakes?
When a foot and hand brake application is made
When the trailer and tractor brakes are applied at the same time
When a service brake application is made with the park brake still applied
All answers are correct
What is the function of the slack adjuster?
To keep the brakes in proper adjustment
To reduce brake lag
A rotating cam which activates the brake shoes
The metal panel between the cab and the engine compartment
How are spring brakes held in the released position?
Air pressure
Spring pressure
Push rod
S-cam
How are spring brakes applied?
Air pressure
Spring pressure
Push rod
Control valve
What is the most common cause of loss of braking effort on air brake-equipped vehicles?
Driver error
Thin brake drums
Poor brake adjustment
Cold brake drums
How often should slack adjusters be checked?
Daily
Twice daily
After 10, 000 km
When brakes begin to lag
What factor determines how much heat can be absorbed by the brake drum?
How large it is
How thick it is
What metal it is made of
What colour it is
What is the final check to be made by the driver before leaving the yard?
Application of parking brakes
Application of the emergency brakes
Foot-brake application
Hand valve application
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