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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 9 of 200
Correct22%2 of 9 answered
Incorrect78%7 of 9 answered

What do automatic reservoir drain valves do?

AIntermittently expel accumulated contaminationYour answerCorrect answer
BHold the service brakes applied
CReplace the governor
Correct.

Automatic drains, sometimes called spitter valves, periodically expel collected water and contaminants. (Guide p. 182)

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