Answer :
Final answer:
Normal operating air pressure for automotive tires typically ranges from 30-35 psi. Among the options provided, 60 psi and 70 psi are relatively high, while 50 psi is more reasonable but still must be verified against manufacturer specifications. Always refer to the manufacturer's recommendations for the safest and most effective air pressure setting.
Explanation:
Understanding Normal Operating Air Pressure
When it comes to maintaining the air pressure in automotive tires or other pneumatic systems, the normal operating air pressure can vary depending on the specific requirements of the vehicle and manufacturer recommendations. The choices provided—70 psi, 60 psi, 80 psi, and 50 psi—are all potential candidates for acceptable air pressure levels.
Typical Tire Pressure: For most passenger vehicles, the recommended tire pressure typically ranges from 30 to 35 psi. This means that options such as 60 psi or 70 psi could be considered high, and 50 psi might be within a reasonable range for certain specifications. It is also important to note that 80 psi is usually too high for passenger car tires and is more appropriate for specialized tires, like those on trucks or heavy-duty vehicles, which can handle higher pressures.
Temperature Effect on Pressure
For instance, if a tire is inflated to 45 psi at 18°C, its pressure will increase when the operating temperature reaches 45°C, according to the ideal gas law, assuming volume stays constant. This increase indicates that monitoring air pressure must also consider temperature variations, which can significantly impact performance.
Ultimately, the specific air pressure setting should always conform to the manufacturer's recommendations, often found on a sticker inside the driver’s side door or in the owner’s manual.
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