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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
Correct35%9 of 26 answered
Incorrect65%17 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 minuteYour answer
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.Correct answer
Incorrect.

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.