Basic Flashcards
7 cards from real Air Brake Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Basic flashcards as text
In an air brake system, what component stores the compressed air for use by the brakes?
Answer: Air reservoir tanks
Air reservoir tanks hold the compressed air that operates the brakes.
What does the air compressor governor control?
Answer: When the compressor pumps air into the reservoirs
The governor controls when the compressor cuts in and out to maintain reservoir pressure.
At what pressure does the low air pressure warning typically activate?
Answer: Below 60 psi
The low air pressure warning must activate before pressure drops below 60 psi.
What is the purpose of draining the air tanks daily?
Answer: To remove water and oil that collect in the tanks
Draining removes accumulated water and compressor oil that can damage the system.
What device automatically expels moisture and removes oil from the air system?
Answer: Air dryer
The air dryer collects and removes moisture and oil before air enters the reservoirs.
Normal operating air pressure for a heavy vehicle is generally in what range?
Answer: 100 to 125 psi
Most air brake systems operate between roughly 100 and 125 psi.
What component converts air pressure into mechanical force to apply the brakes?
Answer: Brake chamber
The brake chamber uses air pressure to push a rod that applies the brakes.