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HYDRAULICS AND FLUID MECHANICS IN ME

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 empty the tank completely will be

(2AH₁²)/(Cd × a√2g)
(2AH₁)/(Cd × a√2g)
(2A√H₁)/(Cd × a√2g)
(2AH₁3/2)/(Cd × a√2g)

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Hydraulics and Fluid Mechanics in ME
According to equation of continuity,

a1/v1 = a2/v2
w1v1 = w2v2
w1a1 = w2a2
a1v1 = a2v2

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Hydraulics and Fluid Mechanics in ME
According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

A × √(m × i)
C × √(m × i)
mi × √(A × C)
AC × √(m × i)

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Hydraulics and Fluid Mechanics in ME
The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.

The body B is more stable than body A
The bodies A and B are unstable
The bodies A and B have equal stability
The body A is more stable than body B

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Hydraulics and Fluid Mechanics in ME
A fluid having no viscosity is known as

Non-Newtonian fluid
Real fluid
Newtonian fluid
Ideal fluid

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