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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem

Venturimeter
All of these
Orifice plate
pitot tube

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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 contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is

0.5 v₁²/2g
0.375 v₂²/2g
v₁²/2g
v₂²/2g

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Hydraulics and Fluid Mechanics in ME
The force of buoyancy is always __________ the weight of the liquid displaced by the body.

None of these
More than
Less than
Equal to

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Hydraulics and Fluid Mechanics in ME
The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will

may increase or decrease depending on the characteristics of liquid
decrease
increase
remain unaffected

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Hydraulics and Fluid Mechanics in ME
Falling drops of water become spheres due to the property of

adhesion
viscosity
cohesion
surface tension

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Hydraulics and Fluid Mechanics in ME
Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called

cohesion
adhesion
viscosity
compressibility

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