What is the principle behind a pressure gauge?
A. It uses a diaphragm to convert pressure into a mechanical deflection
B. It uses a bourdon tube to convert pressure into a mechanical deflection
C. It uses a piezoelectric crystal to convert pressure into an electrical signal
D. It uses a thermocouple to convert pressure into a temperature reading
Answer:B
What is the principle behind a pressure gauge?
A. It uses a diaphragm to convert pressure into a mechanical deflection B. It uses a bourdon tube to convert pressure into a mechanical deflection C. It uses a piezoelectric crystal to convert pressure into an electrical signal D. It uses a thermocouple to convert pressure into a temperature reading
Explanation: A bourdon tube is a curved, hollow metal tube that is closed at one end and open at the other. When pressure is applied to the tube, it tends to straighten out, which causes the free end to move in response to changes in pressure. This motion is then transmitted to a mechanical linkage, which drives the pointer on the gauge face.