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CDL Air Brakes Practice Test Results
Question 1
93% answer correctly
Why must air tanks be drained?
To verify they meet pressure requirements
To check for leaks
To release oil and water buildup
So they can be inspected
Question 2
69% answer correctly
If the air compressor stops working, air brakes:
Immediately fail
Can be used indefinitely
Can still be used several times
Cannot be used
Question 3
76% answer correctly
An air tank safety valve is typically set at how many psi?
200
150
100
125