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Question
. Which is not correct statement about selection of tube material for a Bourdon gauge:
Options:
A .  Have high creep strength to withstand high temperature
B .  Be stable enough to maintain its calibration indefinitely
C .  Be immune to corrosion from the fluid inside the tube, and from the atmosphere outside it
D .  Be hard enough to withstand the applied pressure without any part of it being stressed above the limit of proportionality
Answer: Option A

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