Question 1
At what psi is the safety valve set to open?
Correct Answer:
150 psi
Question 2
While inspecting a coupling, you should go under the trailer and:
Correct Answer:
Look into the back of the fifth wheel.
Question 3
What is a bobtail?
Correct Answer:
A tractor without a semi-trailer
Question 4
When backing up while coupling a trailer, the tractor should be positioned:
Correct Answer:
Directly in front of the trailer.
Question 5
When you press the brake pedal in a vehicle with S-cam brakes, air pressure pushes out the rod and moves the:
Correct Answer:
Slack adjuster.
Question 1 of 25
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About this Exam

Prepare with the Minnesota CDL Air Brakes Test 1 practice quiz. This question bank includes 25 questions covering trailer, vehicle, brakes, pressure, and while. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Minnesota CDL Air Brakes Test 1

This practice set contains 25 questions from the matching question bank and focuses on trailer, vehicle, brakes, pressure, and while. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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