cdl practice test

Air Brake Practice Test 1

Learning Series


Question #1 of 45

What is a supply pressure gauge used for?


These gauges tell you how much pressure is in the air tanks.

These gauges monitor you how much slack is in the slack adjusters.

These gauges tell you how much pressure is in the air lines.

These gauges warn you about brake chamber leaks only.

None of the above.





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