Liquid manometers measure differential pressure by balancing the weight of a liquid between two pressures. Light liquids such as water can measure small pressure differences; mercury or othe heavy liquids are used for large pressure differences. A 150 inclined manometer containing mercury is connected to tw taps A an B containing water. Tap B is 5 ft vertically higher than Ta When the pressure in Tap B is 5 psi, the manometer reads 4 inche along the inclined tube. Calculate the new manometer reading (in inches) if the pressure in Tap A is increased by 3 psi.

A manometer shows a vacuum of 260 mm Hg. What will be the value of this pressure in N/ m2 in the form of absolute pressure and what will be absolute pressure (N/m2), if the gauge pressure is 260 mm of Hg. Explain the difference between these two pressures.

We have used a tire gauge and measured the air pressure inside a car tire to be 241 kPa. What is the absolute pressure of the air inside the tire, if the car is located in (a) a city located at sea level, (b) a city located in Colorado with an elevation of 1500 m? Express your results in both units of psi and pascals.

Determine the new differential reading along rhe inclined leg of the mercury manometer if the pressure in pipe A is decreased 10 kPa and the pressure in pipe B remains unchanged. The fluid in A has specific gravity of 0.9 abd the fluid in B is water. (Hydrostatic)