Answer :

Final answer:

The original statement about the tractor protection valve popping at 2045 psia is false. Tractor protection valves are designed to activate at much lower pressures, typically between 20 to 45 psi, to prevent air loss in heavy vehicle braking systems.

Explanation:

The question relates to the operation of a tractor protection valve in a pneumatic system, which is a crucial component in heavy vehicles like trucks. The original statement implies a pressure measurement in psia, which stands for pounds per square inch absolute, a unit for measuring pressure.

However, the context given does not directly provide an answer to the query about the specific pressure range at which the tractor protection valve will pop. In general, tractor protection valves are safety devices designed to prevent air loss in the event of a trailer's brake system failure, by disconnecting the trailer from the tractor. These valves are typically set to activate (pop) when the air pressure falls below a certain threshold, commonly around 20 to 45 psi (not 2045 psia), safeguarding against complete air loss and ensuring the vehicle can be brought to a stop safely.

To directly address the question: The tractor protection valve will pop when the pressure falls between 20-45 psi, making the original statement false if interpreted in the context of usual operating pressures for these systems.

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Rewritten by : Barada