Air Brake (Q Endorsement) Practice · Question
Scenario 7: The foot (treadle / brake) valve controls:
Pressing the foot valve meters air from the reservoirs to the brake chambers in proportion to pedal travel. The correct answer is "The amount of air sent from t
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Question: Scenario 7: The foot (treadle / brake) valve controls:
Answer options:
- Engine throttle ✅ The amount of air sent from the reservoirs to the service brake chambers
- The compressor
- The parking brake only
Correct answer: The amount of air sent from the reservoirs to the service brake chambers
Explanation: Pressing the foot valve meters air from the reservoirs to the brake chambers in proportion to pedal travel. The correct answer is "The amount of air sent from the reservoirs to the service brake chambers". This capacity-fill scenario 7 reinforces the same competency for the airbrake bank and follows the certified explanation standard.
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