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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 18 of 200
Correct39%7 of 18 answered
Incorrect61%11 of 18 answered

What does the foot valve do when the driver applies the brake pedal?

ADirects compressed air from the reservoirs toward the brakesCorrect answer
BLocks the steering axle mechanically
CDrains every reservoirYour answer
Incorrect.

The foot valve meters stored air to the brake chambers to apply the service brakes. (Guide p. 146)

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