Air Brakes Endorsement I

1.

Why must air tanks be drained?

  • A. To drain all the air out of the tank.
  • B. To drain moisture and oil out of the tank.
  • C. To keep anyone from moving the vehicle.

2.

What is a supply pressure gauge used for?

  • A. To tell you how much diesel is in the vehicle.
  • B. To tell you how much water is in the air tank.
  • C. To tell you how much air is in the air tank.

3.

All vehicles with air brakes must have a low air pressure warning signal.

  • A. True
  • B. False

4.

What are spring brakes?

  • A. Brakes used for parking.
  • B. If the air brakes leak down, springs press the brakes on to stop the vehicle.
  • C. The spring on the brake pedal.

5.

Front wheel brakes are good under all conditions.

  • A. True
  • B. False

6.

When you put your brakes on the air brake system works with an electric switch, by air pressure to turn on the brake lights.

  • A. True
  • B. False

7.

What do air brakes use to make the brakes work?

  • A. Compressed gas
  • B. Compressed oil
  • C. Compressed air

8.

Air brakes are really three different braking systems: service brake, parking brake and emergency brake.

  • A. True
  • B. False

9.

The service brake applies and releases:

  • A. The parking brake when you use the parking brake control.
  • B. The brake when you use the brake pedal during normal driving.
  • C. In the event of an emergency.

10.

The parking brake applies and releases:

  • A. The brake pedal during normal driving.
  • B. In the event of an emergency.
  • C. The parking brakes when you use the parking brake control.

11.

The emergency brake system:

  • A. Uses parts of the service and parking brake system to stop the vehicle in the event of a brake system failure.
  • B. Uses the service brake to stop the vehicle in the event of a brake system failure.
  • C. Uses the parking brake to stop the vehicle in the event of a brake system failure.

12.

The governor controls when the air compressor will pump into the air storage tanks.

  • A. True
  • B. False

13.

The air storage tanks are used to hold compressed air.

  • A. True
  • B. False

14.

When you put on the brakes by pushing down the brake pedal:

  • A. The air pressure is reduced to the brake pads.
  • B. Air pressure is applied to the brake pads.
  • C. Compressed air is let go out of the system.

15.

The S-cam forces the brake shoes away from one another and presses them against the inside of the brake drum. It is called the S-cam because:

  • A. It is shaped like the letter Z.
  • B. It is shaped like the letter N.
  • C. It is shaped like the letter S.