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  Differential Manometer (Numericals 2): Q 1:  A piezometer was connected to a pipe to measure the pressure of water. The rise of water level in piezometer was 150 mm. Calculate the pressure of water.    [Ans = 1471.5 N/m 2 ] Q 2:  Pressure in a pipe carrying oil (Specific Gravity 0.92) is 20 kN/m 2 . A piezometer is connected to the pipe. Find the rise of liquid level in the piezometer.  [Ans = 2.21 m] Q 3:  A U-tube manometer is connected to a pipe for measuring the pressure of oil (Specific gravity 0.92) flowing in the pipeline. Mercury (Specific gravity 13.6) is used as manometer liquid and the difference of mercury level in the two limbs is 200 mm. The centre of pipe is 80 mm below the level of mercury in the right limb. Determine the pressure in the pipeline and the head.   [Ans: 23.55 kN/m 2 ] Q 4:  The pressure of water in a domestic supply line was measured using manometer shown in the figure. Derive the equation for head and determine the pressure.     [Ans: h= 1.99 m, p = 19
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