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Home/Practice quizzes/Single-unit air brakes

Single-unit air brakes practice quiz

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

Single-unit air brakesQuestion 20 of 200
Correct35%7 of 20 answered
Incorrect65%13 of 20 answered

During a complete primary-circuit line rupture, what happens to new compressor output?

AIt follows the path of least resistance and vents at the rupture.Your answerCorrect answer
BIt is stored permanently in the secondary brake chambers.
CIt turns into hydraulic pressure at the foot valve.
DIt automatically cages every spring brake.
Correct.

Although the compressor continues pumping, its output escapes through the open primary-circuit rupture. (Guide p. 160)

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