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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
One cubic metre of water weighs

500 liters
1000 liters
250 liters
100 liters

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Hydraulics and Fluid Mechanics in ME
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly enlarged to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden enlargement is

(v₁² - v₂²)/2g
(v₁ - v₂)²/g
(v₁² - v₂²)/g
(v₁ - v₂)²/2g

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Hydraulics and Fluid Mechanics in ME
The Bernoulli's equation is based on the assumption that

All of these
The velocity of flow is uniform across any cross-section of the pipe
No force except gravity acts on the fluid
There is no loss of energy of the liquid flowing

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Hydraulics and Fluid Mechanics in ME
Froude's number is the ratio of inertia force to

Pressure force
Gravity force
Elastic force
Surface tension force

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Hydraulics and Fluid Mechanics in ME
In a static fluid

Only normal stresses can exist
Fluid pressure is zero
Linear deformation is small
Resistance to shear stress is small

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Hydraulics and Fluid Mechanics in ME
The unit of kinematic viscosity in S. I. units is

m2/s
N-s/m2
N-m/s
N-m

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