8. An air compressor governor controls:
When the air compressor pumps air into the air storage tanks.
The temperature of the air pumped into the air storage tanks.
How fast air is pumped into the air storage tanks.
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Air Brakes #2
This endorsement is required for driving a vehicle with air brakes. To receive this endorsement, applicants must pass a written test. The test consists of 25 multiple choice questions. Each question has three or four answer choices. To pass, the applicant must answer at least 20 questions correctly. Test questions come from the North Carolina Commercial Driver License Manual. Questions come from the chapter covering: Air Brakes. The Air Brakes endorsement may be used with the Class A, B or C CDL.
Number of Questions
25
Passing Score
20
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To Pass
0
Correct
0
Incorrect
0
9. When operating a vehicle with a dual brake system, a driver should:
Pump the pedal about 20 times to build pressure, then begin driving.
Begin driving just after the vehicle starts.
Wait to begin driving until the air compressor builds up a minimum pressure of 100 psi in both the primary and secondary systems.
Let the vehicle warm up before driving to ensure that fuel reaches the engine.
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