Illinois CDL Practice Exam

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Study for the Illinois CDL Exam. Utilize comprehensive quizzes featuring multiple choice questions with hints and explanations. Gear up for success on your test!

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Which component in the air brake system is used to hold compressed air and ensure braking functionality even in case of compressor failure?

Air Tank Drains
Safety Valve
Air Storage Tanks
Alcohol Evaporator

The correct answer is: Air Storage Tanks

In an air brake system, the component used to hold compressed air and ensure braking functionality even in case of compressor failure is the Air Storage Tanks. These tanks store the compressed air necessary for braking, allowing the system to have reserve air in case the compressor fails. This ensures that the brakes can still be applied even if there is a problem with the compressor. The other options are not correct because: - Air Tank Drains are used to release excess moisture and contaminants from the air tanks but do not hold compressed air. - Safety Valve is designed to release air pressure from the system in case it exceeds a certain level to prevent damage, but it does not store compressed air. - Alcohol Evaporator is used to add alcohol to the air system to prevent freezing in cold weather conditions, but it is not responsible for holding compressed air for braking purposes.