Air Brake Manual Quiz (Complete Summary)

A detailed illustration of an air brake system, showcasing components like the compressor, reservoirs, and braking mechanism in a vehicle. The background includes a semi-truck on a highway, highlighting safety and performance.

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

18 Questions4 MinutesCreated by BrakingExpert432

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 1/2"

3/4"

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

Air Brake Manual Quiz (Complete Summary)

Air Brake System Knowledge Quiz

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