Q
41. Why must air tanks be drained?
Air Brakesmedium
ATo drain all the air out of the tank.
BTo drain moisture and oil out of tank.
CTo tell you how much air is in the air tanks.
Detailed Explanation
The correct answer is "To drain moisture and oil out of tank.". This is based on federal CDL regulations and safety standards.
Correct Answer: To drain moisture and oil out of tank.
Advertisement
Ready to practice for real?
Take our free, full-length Air Brakes practice test. Simulates the actual DMV exam with timed questions.
Start Practice TestRelated Questions
Before starting down a hill, be sure to:
air-brakesmedium
44. All vehicles with air brakes must have a low-pressure warning signal.
air-brakesmedium
37. If air pressure is NOT build up fast enough within the correct amount of time:
air-brakesmedium
29. The S-cam:
air-brakesmedium
8. The application pressure gauge shows how much pressure you have:
air-brakesmedium
Advertisement