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Home/Practice quizzes/Class 1

Class 1 practice quiz

Choose an answer, read the explanation, then continue to the next question. Your results include a review of every answer.

Class 1Question 10 of 200
Correct50%5 of 10 answered
Incorrect50%5 of 10 answered

Within what reservoir-pressure range should the trailer air supply valve close during the pump-down test?

A60 to 80 p.s.i.Your answer
B20 to 45 p.s.i.Correct answer
C105 to 135 p.s.i.
Incorrect.

The trailer air supply valve should close when the highest reservoir gauge reads between 20 and 45 p.s.i. (138 to 310 kPa). (Guide p. 208)

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Study aid only. These are not official ICBC exam questions, and practice scores do not predict an official test result.