What is primarily used to cool air compressors on most truck air brake systems?

A) engine coolant
B) water
C) ram air
D) alcohol injection

Air Compressors

Mechanical devices that increase the pressure of air by reducing its volume, commonly used in various industrial and personal applications.

Truck Air Brake Systems

A braking system used in heavy trucks and buses that uses compressed air to press brake pads against drum or disc brakes.