Free CDL Exam Air Brakes Endorsement Practice Test Questions

Question # 21

Why is it important to maintain the air dryer on a truck?

Options:

It controls governor cycling

It prevents moisture and oil from entering the brake system

It provides extra brake horsepower

It increases compressor RPM

Viewing question 21 out of 72 questions

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CDL Exam Air Brakes Endorsement Overview

Name	Air Brakes Knowledge Test
Code	CDL Exam Air Brakes Endorsement
Vendor	Career
Certification	Federal Motor Carrier Safety Administration

CDL Exam Air Brakes Endorsement Questions

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CDL Exam Air Brakes Endorsement Overview

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