engineering recuitment HPCL Junior Executive 2025 Mock Test Fluid Mechanics Pressure Measurement Pressure Measuring Instruments
The difference of the pressure head (h) measured by a differential U tube manometer used for the measurement of difference in pressure of an oil flowing through a pipe is given by which of the following equation?
Where, Sm = Specific gravity of the monometric liquid (mercury), So = Specific gravity of oil, x = deflection of the mercury level.
1
h = x [(Sm/So - 1)]
2
h = x [1 – (Sm/So)]
3
h = x (Sm - So)
4
h = x (So - Sm)