The difference of the pressure head (h) measured by a differential U t – McqOptions

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1.	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.
A.	h = x [(Sm/So - 1)]
B.	h = x [1 – (Sm/So)]
C.	h = x (Sm - So)
D.	h = x (So - Sm)
Answer» B. h = x [1 – (Sm/So)]

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