Exam (elaborations)
CDL Class A Combination Vehicle Test Answered Questions
- Course
- Institution
CDL Class A Combination Vehicle Test Answered Questions
[Show more]
Content preview
CDL Class A Combination Vehicle TestAnswered Questions
After you supply air to the trailer, make sure the air lines are not crossed and the trailer
brakes are working. This is done by:
A) applying and releasing the trailer brakes and listening for brake sounds
B) lifting the brake pedals
C) turning on the parking brakes from the cab
D) releasing the tractor brakes - ANSWER-A
Air lines on a combination vehicle are often colored to keep them from getting mixed up.
The emergency line is ____; the service line is____.
A) Red, blue
B) Blue, red
C) Black, yellow
D) Depends on the type of trailer - ANSWER-A
If you cross connect the two air lines the following will result...
A) nothing, the lines are interchangeable
B) you will not have air going to the trailer brakes
C) your tractor brakes will lock up
D) you could not move the tractor - ANSWER-B
If you start a trailer skid you should...
A) step on the brakes quickly
B) release the brakes to get traction back
C) use the trailer hand brake
D) slowly apply pressure to the brakes - ANSWER-B
The air leakage rate for a combination vehicle (engine off, brakes off) should be no more
than ____ psi per minute.
A) 1
B) 2
C) 3
D) 4 - ANSWER-C
The earliest way to notice a trailer skid is...
A) by feeling the pull on your steering wheel
B) by feeling a jerking in the back of the tractor
C) by seeing it in your mirrors
D) by hearing the squeal from the tires - ANSWER-C
The hand valve should be used:
A) to test the trailer brakes
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LUCKYSTAR2022. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79271 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now