CDL Doubles and Triples Practice Test 1
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Question 1 of 10
1. Question
What is rearward amplification?
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Question 2 of 10
2. Question
In a set of triples, where should the heaviest trailer be?
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Question 3 of 10
3. Question
Why should you never disconnect the pintle hook with the dolly still under the rear trailer?
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Question 4 of 10
4. Question
When connecting the converter dolly to the front trailer, what do you do first?
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Question 5 of 10
5. Question
If a second trailer does not have spring brakes, how should you set the brakes when you are coupling?
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Question 6 of 10
6. Question
Pushing in the trailer air supply knob will do what?
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Question 7 of 10
7. Question
How should you check that you have sufficient emergency airflow to all trailers in a set of doubles or triples?
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Question 8 of 10
8. Question
What is the main purpose of a trailer shut-off valve?
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Question 9 of 10
9. Question
What is the correct position of the shut-off valves for the last trailer of a doubles or triples set?
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Question 10 of 10
10. Question
What is the correct position of the shut-off valves for the first trailer of a doubles or triples set?
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