CDL Air Brakes Practice Test Results

Question 1
81% answer correctly
Air tank drains:
Deliver air from the air compressor to the air tanks
Allow excess air pressure to be released from air tanks
Deliver air from the air tanks to the air brakes
Allow water and oil to be expelled from air tanks
Question 2
50% answer correctly
A safety valve is installed:
On the air compressor
On every air tank connected to the air compressor
On the first air tank connected to the air compressor
On the last air tank connected to the air compressor
Question 3
84% answer correctly
The low air pressure warning will sound when:
Air pressure falls to 0 psi
Air pressure falls below 60 psi
Air pressure falls below 100 psi
Air pressure falls below 50 psi