CDL Air Brakes Practice Test Results

Question 1
81% answer correctly
Air tank drains:
Allow excess air pressure to be released from air tanks
Deliver air from the air tanks to the air brakes
Deliver air from the air compressor to the air tanks
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 the last air tank connected to the air compressor
On every air tank connected to the air compressor
On the first air tank connected to the air compressor
Question 3
56% answer correctly
You should be in the proper gear before starting down a hill because:
To keep your speed under control
It`s difficult to change gears while going downhill
To keep the brakes cool
The use of brakes is only a supplement to the braking effect of the engine