Hydraulics and Fluid Mechanics in ME
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to bring the liquid level from H1 to H2 will be

2A × √H₂/Cd × a × √(2g)
2A × (√H3/2 - √H3/2)/Cd × a × √(2g)
2A × √H₁/Cd × a × √(2g)
2A × (√H₁ - √H₂)/Cd × a × √(2g)

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Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?

The pressure on the wall at the liquid level is minimum
The pressure on the bottom of the wall is maximum
The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum
The pressure on the bottom of the wall is zero

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Hydraulics and Fluid Mechanics in ME
The intensity of pressure at any point, in a liquid, is

Directly proportional to the length of the vessel containing liquid
Inversely proportional to the depth of liquid from the surface
Directly proportional to the depth of liquid from the surface
Directly proportional to the area of the vessel containing liquid

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