The water level in an open vessel is to be monitored by a diaphragm pressure cel

Question

The water level in an open vessel is to be monitored by a diaphragm pressure cell responding to the difference in pressure between that at the base of the vessel and the atmosphere. The range of pressure differences across the diaphragm that the cell will have to respond to if the water level can vary between zero height above the cell measurement point and it is (take the acceleration due to gravity to be due 9.8 m/s^2 and the density of the water as 1000 kg/m^2): 102 Pa. 102 kPa 9800 Pa 9800 kPa

Explanation / Answer

so the required pressure is

= density x acceleration x height

= 1000 kg/m^3 x 9.8 m/s^2 x 1 m = 9800 Pa ......................option c).......................ans

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