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Question

A student wants to find the absolute pressure of water at a point below the surface of water. He has a barometer and a manometer pressure gauge. The barometer reads 1.3152 bar whereas the manometer pressure gauge reads 0.3152 bar. What is the absolute pressure? (Assume that pressure at one end of the manometer is atmospheric.)

A
1 bar
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B
1.6304 bar
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C
0.3152 bar
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D
1.3152 bar
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Solution

The correct option is B 1.6304 bar
As we know,
Manometer reads the guage pressure while barometer reads the atmospheric pressure.
Hence,
Absolute pressure = Manometric reading + Barometric reading
=1.3152+0.3152
=1.6304 bar

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