CDL Air Brakes Practice Test Results

Question 1
50% answer correctly
Modulating control valves are used to:
Apply the air brakes gradually
Apply the spring and air brakes together
Switch between spring and air brakes
Apply the spring brakes gradually
Question 2
82% answer correctly
Air brake systems consist of which three components?
Parking and emergency brakes
Duty, parking and emergency brakes
Standard, parking and emergency brakes
Service, parking and emergency brakes
Question 3
81% answer correctly
The air compressor governor keeps the air pressure in the air storage tanks between __________ and __________ psi.
750, 1000
100, 125
1000, 1250
75, 100