In a U-tube mercury manometer one end is exposed to the atmosphere and the other end is connected to a pressurized gas. The gauge pressure of the gas is found to be 40 kPa. Now we change the manometric fluid to water. The height difference changes by ( mercury = 13600 kgm3 water = 1000 kgm3).

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1.	In a U-tube mercury manometer, one end is exposed to the atmosphere and the other end is connected to a pressurized gas. The gauge pressure of the gas is found to be 40 kPa. Now, we change the manometric fluid to water. The height difference changes by: ( mercury = 13600 kg/m3, water = 1000 kg/m3).
A.	1260%
B.	92.64 %
C.	Remains unchanged (0%)
D.	13.6%
Answer» B. 92.64 %

Discussion

Explore topic-wise MCQs in Fluid Mechanics.

In a U-tube mercury manometer, one end is exposed to the atmosphere and the other end is connected to a pressurized gas. The gauge pressure of the gas is found to be 40 kPa. Now, we change the manometric fluid to water. The height difference changes by: ( mercury = 13600 kg/m3, water = 1000 kg/m3).