If the gauge pressure is 87 psi, what is the equivalent reading in bar?

To convert gauge pressure from psi (pounds per square inch) to bar, one needs to use the conversion factor between the two units. The relationship is established as follows: 1 psi is approximately equal to 0.06895 bar.

To perform the conversion from psi to bar, you can use the formula:

[ \text{Pressure in bar} = \text{Pressure in psi} \times 0.06895 ]

Applying this to the given pressure of 87 psi:

[ 87 , \text{psi} \times 0.06895 , \text{bar/psi} \approx 6.0 , \text{bar} ]

This calculation shows that the equivalent gauge pressure in bar is approximately 6, which corresponds to the correct answer choice.

Understanding these conversions is essential in fluid power applications, as pressure measurements may be required in different units depending on the context or geographic location. This knowledge allows for more accurate interpretation and communication in engineering tasks.