The pressure applied to the instruments via...

The pressure applied to the instruments via...

Question 1 of 270705eccefa5bacbc34ba4d48750

The pressure applied to the instruments via port "A", as shown in the illustration, is 16 psia. What will be the equivalent pressure readings for "B" and "D"? See illustration GS-0154.

Question 1 of 27070

Q

The pressure applied to the instruments via port "A", as shown in the illustration, is 16 psia. What will be the equivalent pressure readings for "B" and "D"? See illustration GS-0154.

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🔍 Key Concepts

• Difference between psia (absolute pressure) and psig (gauge pressure) and how atmospheric pressure (≈14.7 psia) fits in • How a Bourdon tube gauge like instrument B usually reads pressure (absolute vs gauge) with respect to atmosphere • Conversion between psi and inches of water column using 1 psi ≈ 27.7 inches of H₂O

💭 Think About

• First, decide whether the 16 psia applied at A includes or excludes atmospheric pressure. How do you convert that to a gauge reading at B? • Once you know the pressure in psi above atmosphere, how would you convert that same pressure into inches of water column for instrument D? • Check which answer choice keeps the same physical pressure at all three instruments (A, B, and D) but expressed in different units.

✅ Before You Answer

• Be sure you clearly separate absolute pressure (psia) from gauge pressure (psig) before doing any conversions. • Verify your psi → inches of water conversion factor and multiply carefully; round only at the end. • Confirm that the pressure value you get for instrument B and the equivalent water-column height for D both appear together in only one of the answer choices.