Discussion Forum : Electrical & Electronics Measurement & Instrumentation Test Questions
Question - In deadweight gauge, weights are added on the top of piston until the piston reaches a datum level. The datum level is known as
Options:
A .  Null point, where the downward force balances the fluid pressure
B .  Lowest point of the container
C .  Highest level of fluid in the container
D .  None of these
Answer: Option A
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