Which of the following corresponds to a pressure measurement of 14.8" hg?

To understand which option corresponds to a pressure measurement of 14.8" hg, it's crucial to convert the measurement into the appropriate units. The inches of mercury (hg) measurement is often used in various fields, including refrigeration, to gauge vacuum levels and pressure.

14.8 inches of mercury is a measure of pressure. When converting inches of mercury to psi (pounds per square inch), we can use the conversion factor: 1" hg is approximately equal to 0.491 psi. Therefore, the calculation would be:

14.8" hg × 0.491 psi/" hg = approximately 7.27 psi.

Given that one of the choices reflects a pressure close to 7.27 psi, it allows us to identify the correct answer. The option that aligns with this conversion indicates the relationship between the given measurement in inches of mercury and its equivalent in psi.

This interpretation confirms that option A aligns relatively well with the pressure conversion you’re evaluating, as it represents a very low pressure value in comparison to atmospheric pressure. It's important to grasp the context of pressure measurements in refrigeration operations since understanding these conversions is vital for proper system design and troubleshooting.