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UPSC Civil Service Exam Questions - Engineering

Q1:

An open cylindrical vessel with axis vertical and filled with a liquid is falling freely with an acceleration What will be the absolute pressure at the base of the vessel ?

A Equal to liquid column

B Below atmospheric pressure

C Above atmosphere pressure

D Equal to atmosphere pressure

ANS:A - Equal to liquid column

Here, it is asked what will be the pressure at the BASE of the vessel so the answer is (a) if says pressure at top of the vessel than (d) is correct.