Correct Answer:
B. A pressure-sensing instrument that uses a curved metal tube which straightens as pressure increases, with the resulting movement used to indicate pressure on a dial.
Explanation:
- B. Correct: A Bourdon tube is a mechanical pressure measurement device. It consists of a curved metal tube that tends to straighten out when pressure is applied. This movement is then translated into a dial reading, providing the pressure measurement.
- A. Incorrect: This describes a temperature-sensitive device, not a Bourdon tube. Temperature measurement is not the function of a Bourdon tube.
- C. Incorrect: This describes a flow meter, not a Bourdon tube. Bourdon tubes are used for measuring pressure, not flow.
- D. Incorrect: This describes a temperature sensor based on electrical resistance changes, not a Bourdon tube. A Bourdon tube measures pressure through mechanical movement.
Correct Answer:
B. A pressure-sensing instrument that uses a curved metal tube which straightens as pressure increases, with the resulting movement used to indicate pressure on a dial.
Explanation:
- B. Correct: A Bourdon tube is a mechanical pressure measurement device. It consists of a curved metal tube that tends to straighten out when pressure is applied. This movement is then translated into a dial reading, providing the pressure measurement.
- A. Incorrect: This describes a temperature-sensitive device, not a Bourdon tube. Temperature measurement is not the function of a Bourdon tube.
- C. Incorrect: This describes a flow meter, not a Bourdon tube. Bourdon tubes are used for measuring pressure, not flow.
- D. Incorrect: This describes a temperature sensor based on electrical resistance changes, not a Bourdon tube. A Bourdon tube measures pressure through mechanical movement.