Manitoba Airbrake Practice Exam

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If air exhausts from the service line, this indicates that the trailer supply valve is defective. True or False?

True
False

The correct answer is: False

If air is exhausting from the service line, it means that the trailer supply valve is not functioning properly and needs to be repaired or replaced. This is because the valve is responsible for controlling the air flow between the tractor and trailer. If it is defective, air will not be able to properly pass through the service line, leading to exhaust. Therefore, the statement "if air exhausts from the service line, this indicates that the trailer supply valve is defective" is false.