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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The unit of surface tension is

N/m2
N/m
N-m
N/m3

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Hydraulics and Fluid Mechanics in ME
The hydraulic grade line is

never above the energy grade line
always above the centre line of pipe
All of these
always sloping downward in the direction of flow

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Hydraulics and Fluid Mechanics in ME
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is

0.848
0.488
0.884
0.392

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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

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

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is generally used to pump highly viscous fluid?

Centrifugal pump
Reciprocating pump
Screw pump
Air lift pump

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Hydraulics and Fluid Mechanics in ME
Bernoulli's equation is applied to

Pitot tube
Venturimeter
Orifice meter
All of the listed here

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