A cooling water system pressure detector uses a bourdon tube as the sensing element.
Which one of the following explains how the indicated system pressure will be affected if the temperature of the bourdon tube decreases by 30°F?
(Assume the cooling water system pressure does not change.)
A. Indicated pressure will decrease because the bourdon tube will become less flexible.
B. Indicated pressure will increase because the bourdon tube will become less flexible.
C. Indicated pressure will decrease because the bourdon tube internal pressure will decrease.
D. Indicated pressure will increase because the bourdon tube internal pressure will decrease.
Show Answer
Answer: A
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