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CDL Air Brakes Test #1 | North Carolina 2026 #1

North Carolina CDL Practice Examination (Based on the 2026 NC CDL handbook)

Practice for the North Carolina CDL Air Brakes endorsement test. Covers air brake system components, dual air brakes, and inspection procedures.

25
Questions
20
To Pass
0
Correct
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1. What is the function of the air compressor in an air brake system?

2. The governor controls the air compressor by:

3. Why should you drain air tanks regularly?

4. What does the safety valve on an air brake system do?

5. What is the purpose of an alcohol evaporator in an air brake system?

6. A dual air brake system has:

7. If one system in a dual air brake system fails, what happens?

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