Which differential pressure value is higher?

Which differential pressure value is higher?

• A. 7.8 psi
• B. 8.4 psi
• C. 8.8 psi
• D. -0.5 psi

Answer: (B)

When comparing differential pressure values, you look at the numeric magnitude: a higher value means a larger pressure difference. Positive numbers represent a higher differential, while a negative value is not higher than any positive value. Among the options, 8.8 psi is the largest number, but in the context of limits for the ERJ 175, that value may exceed the published differential pressure limit. The highest value that stays within the allowable limits is 8.4 psi, so that is the correct choice here. The negative value, -0.5 psi, is not higher than the positives.

When comparing differential pressure values, you look at the numeric magnitude: a higher value means a larger pressure difference. Positive numbers represent a higher differential, while a negative value is not higher than any positive value. Among the options, 8.8 psi is the largest number, but in the context of limits for the ERJ 175, that value may exceed the published differential pressure limit. The highest value that stays within the allowable limits is 8.4 psi, so that is the correct choice here. The negative value, -0.5 psi, is not higher than the positives.