BC Air Brake Practice · Question
Scenario 76: One-way (check) valves between reservoirs are designed to:
Check valves keep secondary reservoirs charged if the supply (wet) tank loses pressure. The correct answer is "Prevent loss of air from downstream reservoirs if
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Question: Scenario 76: One-way (check) valves between reservoirs are designed to:
Answer options:
- Reduce pressure ✅ Prevent loss of air from downstream reservoirs if upstream pressure drops
- Vent air to atmosphere
- Apply the spring brake
Correct answer: Prevent loss of air from downstream reservoirs if upstream pressure drops
Explanation: Check valves keep secondary reservoirs charged if the supply (wet) tank loses pressure. The correct answer is "Prevent loss of air from downstream reservoirs if upstream pressure drops". This capacity-fill scenario 76 reinforces the same competency for the airbrake bank and follows the certified explanation standard.
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