Answer :
Final answer:
A safety valve is set to automatically reduce pressure when it reaches a specified limit, which may be 50 psi, 75 psi, 100 psi, or 125 psi, depending on the system's requirements.
Explanation:
The safety valve is designed to automatically reduce pressure when it hits a certain limit. The specific pressure setting at which this happens can vary depending on the design of the valve and the requirements of the system it's installed in. Based on the options provided, the valve could be set to reduce pressure automatically at: Option 1: 50 psi, Option 2: 75 psi, Option 3: 100 psi, or Option 4: 125 psi. An example that might help you understand this concept is a tire pressure gauge. For instance, if the gauge reads 34 psi, the absolute pressure, the total pressure within the tire, is 34 psi plus the pressure of the air outside the tire, or about 48.7 psi.
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