Which of the following are primary components of air brake systems?

The primary components of air brake systems include compressed air tanks, brake chambers, and air lines because these elements work together to create the braking force necessary for stopping a vehicle.

Compressed air tanks store the air, which is used to power the braking system. The brake chambers convert this compressed air into mechanical force that applies the brakes. Air lines connect these components and ensure that the air can travel from the tanks to the brake chambers, allowing the entire system to function effectively when the driver applies the brake pedal.

In contrast, other options consist of components used in different types of brake systems. While they may be part of certain braking mechanisms, they do not describe the essential elements of an air brake system, which is specifically designed for heavy-duty vehicles that require reliable performance under challenging conditions.