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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 13 of 200
Correct46%6 of 13 answered
Incorrect54%7 of 13 answered
Driver pulling a slack adjuster to measure pushrod travel
The slack adjuster is both an adjuster and a lever.

How does the slack adjuster multiply force?

AIt acts as a lever between the pushrod and camshaft.Your answerCorrect answer
BIt raises compressor speed.
CIt increases reservoir volume.
Correct.

The slack adjuster acts as a lever, providing mechanical advantage while also compensating for brake wear. (Guide p. 147)

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