What does 0 psiG equal in psiA?

In this context, psiG refers to gauge pressure, which measures pressure relative to atmospheric pressure, whereas psiA denotes absolute pressure, which includes atmospheric pressure. When a pressure reading is given as 0 psiG, it indicates that the pressure is equal to the atmospheric pressure, which is typically about 14.7 psi at sea level.

When converting gauge pressure to absolute pressure, you add the atmospheric pressure to the gauge reading. Since 0 psiG means the pressure is the same as atmospheric pressure, this translates to 0 psiG being equal to 14.7 psiA.

Therefore, the conversion is accurate with the understanding that absolute pressure encompasses the atmospheric pressure, and thus the correct answer reflects this relationship accurately.