When the pressure on a compound gage is...

Question 1 of 270705eccefa5bacbc34ba4d4874c

When the pressure on a compound gage is released, the gage pointer is returned to zero psig by action of the __________.

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Question 1 of 27070

Q

When the pressure on a compound gage is released, the gage pointer is returned to zero psig by action of the __________.

🔍 Key Concepts

• Compound pressure/vacuum gage construction and how it differs from a simple pressure gage • The mechanical part that actually moves the pointer back toward zero when pressure is removed • The role of Bourdon tubes, springs, and diaphragms in pressure measurement

💭 Think About

• Think about which part of the gage physically flexes when pressure is applied, and what happens to that part when pressure is removed • Which option sounds like a separate component that only acts to "return" the pointer, versus the primary sensing element itself? • Consider how a standard Bourdon-tube pressure gage works: what makes the pointer move in the first place, and what makes it come back?

✅ Before You Answer

• Identify the primary pressure-sensing element used in most compound gages • Decide whether a diaphragm is normally used in general-purpose compound gauges or in more specialized low-pressure instruments • Ask yourself which part naturally returns to its original shape when the load (pressure) is removed, thereby bringing the pointer back to zero psig