Air Brake Adjustment & Testing

Question 1

Why is brake adjustment important in an air brake system?

Accepted Answer

To ensure the brake system is correctly aligned and responsive.

Answer

To reduce air pressure.

Answer

To increase braking power.

Answer

To improve engine efficiency.

Question 2

What is the consequence of improperly adjusted brakes?

Accepted Answer

It can cause uneven braking and excessive wear.

Answer

The brakes will perform more efficiently.

Answer

The brakes will automatically adjust themselves.

Answer

The vehicle will operate at a higher speed.

Question 3

How can a driver test the adjustment of the air brakes?

Accepted Answer

By performing a manual brake test and ensuring proper engagement.

Answer

By checking the brake fluid levels.

Answer

By listening for unusual noises from the engine.

Answer

By measuring the temperature of the brakes.

Question 4

What is one common method for adjusting air brakes?

Accepted Answer

Adjusting the slack adjusters for proper brake shoe positioning.

Answer

Increasing air pressure manually.

Answer

Changing the brake fluid.

Answer

Removing the air tanks.

Question 5

What should a driver do if the air brake system fails during the brake test?

Accepted Answer

Stop immediately, inspect for issues, and report to the supervisor.

Answer

Continue driving until the issue resolves.

Answer

Use manual braking to continue operating.

Answer

Increase air pressure and continue.

Question 6

What is the purpose of the brake adjustment indicator on the air brake system?

Accepted Answer

To signal when brake shoes need adjustment.

Answer

To indicate when the brakes need to be replaced.

Answer

To alert the driver when the brakes are over-pressurized.

Answer

To indicate low air pressure.

Question 7

Why is it necessary to adjust air brakes regularly?

Accepted Answer

To maintain optimal braking performance and prevent excessive wear.

Answer

To reduce the noise level of the brakes.

Answer

To increase the braking speed.

Answer

To reduce fuel consumption.

Question 8

What can happen if air brakes are not properly adjusted?

Accepted Answer

Brakes may fail to apply properly, increasing the risk of accidents.

Answer

The vehicle will operate faster.

Answer

The air pressure will increase.

Answer

The system will automatically adjust itself.

Question 9

What is the result of improperly adjusted brake shoes in the air brake system?

Accepted Answer

Braking efficiency will decrease and premature wear will occur.

Answer

The air pressure will increase.

Answer

Brakes will become more powerful.

Answer

Brakes will apply automatically.