The minimum working pressure of 175 psi is approximately equal to how many bar?

Prepare for the NFPA 13R Sprinkler Systems for Low-Rise Residences Test. Use flashcards and multiple choice questions with hints and explanations to excel in your exam!

Multiple Choice

The minimum working pressure of 175 psi is approximately equal to how many bar?

Explanation:
Converting pressure between psi and bar. 1 bar equals about 14.5038 psi. To get the bar value from psi, divide by 14.5038. So 175 psi ≈ 175 ÷ 14.5038 ≈ 12.06 bar, which rounds to about 12.1 bar. The other options correspond to pressures far from 175 psi (for example, 10 bar is about 145 psi, 8 bar about 116 psi, and 15 bar about 217.5 psi), so 12.1 bar is the correct approximation.

Converting pressure between psi and bar.

1 bar equals about 14.5038 psi. To get the bar value from psi, divide by 14.5038. So 175 psi ≈ 175 ÷ 14.5038 ≈ 12.06 bar, which rounds to about 12.1 bar.

The other options correspond to pressures far from 175 psi (for example, 10 bar is about 145 psi, 8 bar about 116 psi, and 15 bar about 217.5 psi), so 12.1 bar is the correct approximation.

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