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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 26 of 200
Correct38%10 of 26 answered
Incorrect62%16 of 26 answered

What air-pressure buildup result is required at a fast idle during the Class 1 pre-trip?

A20 to 45 p.s.i. within one minute
B80 to 135 p.s.i. within ten minutes
C50 to 90 p.s.i. within three minutes at about 1,000 to 1,200 r.p.m.Your answerCorrect answer
Correct.

At fast idle, pressure must build from 50 to 90 p.s.i. within three minutes. (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.