If the system pressure is 3 psi, approximately how many inches of water does that correspond to?

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Multiple Choice

If the system pressure is 3 psi, approximately how many inches of water does that correspond to?

Explanation:
Converting pressure to a height of a water column is the idea here. For water, 1 psi is about 27.7 inches of water, so a pressure of 3 psi equals 3 × 27.7 ≈ 83.1 inches of water. That’s why the correct choice is 83.1 inches. The other options would correspond to much smaller pressures (for example, 27.7 inches is 1 psi, and 3.0 or 8.3 inches correspond to far less than 3 psi).

Converting pressure to a height of a water column is the idea here. For water, 1 psi is about 27.7 inches of water, so a pressure of 3 psi equals 3 × 27.7 ≈ 83.1 inches of water. That’s why the correct choice is 83.1 inches. The other options would correspond to much smaller pressures (for example, 27.7 inches is 1 psi, and 3.0 or 8.3 inches correspond to far less than 3 psi).

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