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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
Correct67%6 of 9 answered
Incorrect33%3 of 9 answered

What do automatic reservoir drain valves do?

AIntermittently expel accumulated contaminationCorrect answer
BHold the service brakes appliedYour answer
CReplace the governor
Incorrect.

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.