Answer :
Final answer:
The tractor protection valve is a safety device in the air brake system of a tractor-trailer combination. It is set to pop when the pressure in the trailer brake system falls below a certain threshold. The statement given is False.
Explanation:
The tractor protection valve is a safety device in an air brake system of a tractor-trailer combination. It is designed to prevent loss of air pressure in the trailer brake system, ensuring that the tractor brakes remain functional in case of an emergency. The tractor protection valve is set to pop when the pressure in the trailer brake system falls below 20-45 psi, not 100 psi. This is to provide enough reserve air pressure for the tractor brakes to stop the vehicle if the trailer brakes fail. Therefore, the statement 'The tractor protection valve will pop when the pressure falls to 100 psi' is False.
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