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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The mercury does not wet the glass. This is due to the property of the liquid known as

Adhesion
Viscosity
Surface tension
Cohesion

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Hydraulics and Fluid Mechanics in ME
The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)

waV / 2g
waV² / 2g
waV² / g
waV / g

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Hydraulics and Fluid Mechanics in ME
In a centrifugal pump, the liquid enters the pump

At the top
From sides
At the bottom
At the canter

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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. The saving in case of a double acting reciprocating pump is

0.848
0.884
0.392
0.488

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

0.95 times
0.81 times
0.67 times
0.34 times

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Hydraulics and Fluid Mechanics in ME
Center of pressure on an inclined plane is

At metacentre
Above the Centroid
Below the Centroid
At the Centroid

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