CLP Air Brake Systems 2

Question 1

What is the purpose of the air compressor governor in an air brake system?

Accepted Answer

To cut out the compressor when tank pressure reaches the maximum level and cut it in when pressure drops

Answer

To regulate the speed of the air compressor motor

Answer

To control the rate at which air flows to the brake chambers

Answer

To prevent the air dryer from freezing in cold weather

Question 2

How does a dual air brake system improve safety compared to a single system?

Accepted Answer

It provides two separate air systems so that if one fails, the other can still stop the vehicle

Answer

It doubles the braking force applied to each wheel

Answer

It allows the driver to apply front and rear brakes independently at all times

Answer

It automatically applies the parking brakes if a leak is detected

Question 3

What should you do if the low air pressure warning activates while driving?

Accepted Answer

Stop the vehicle safely and as quickly as possible

Answer

Increase speed to reach the nearest truck stop quickly

Answer

Continue driving but avoid hard braking

Answer

Switch to the secondary air system using the dashboard toggle

Question 4

What is the function of the brake chambers in an air brake system?

Accepted Answer

They convert air pressure into mechanical force to apply the brakes

Answer

They store compressed air for emergency use

Answer

They filter moisture and contaminants from compressed air

Answer

They regulate the pressure sent to each individual wheel

Question 5

At what approximate air pressure do spring brakes (parking brakes) fully apply on most vehicles?

Accepted Answer

20 psi

Answer

60 psi

Answer

45 psi

Answer

90 psi

Question 6

What is brake fade in drum brake systems?

Accepted Answer

A loss of braking power caused by heat build-up from prolonged brake use

Answer

The gradual wear of brake pads over time

Answer

The tendency of brakes to pull to one side when applied

Answer

Air leaking from brake chambers during heavy braking

Question 7

What does the air pressure gauge tell the driver during operation?

Accepted Answer

The pressure in both the primary and secondary air tanks

Answer

The temperature of the compressed air in the tanks

Answer

The rate of air leak from the brake lines

Answer

The amount of brake lining remaining on each axle