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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The product of mass and acceleration of flowing liquid is called

Pressure force
Viscous force
Inertia force
Gravity force

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Hydraulics and Fluid Mechanics in ME
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately

30 mm
20 mm
5 mm
10 mm

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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

0.392
0.488
0.848
0.884

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than unity
unity
greater than 2
greater than 4

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Hydraulics and Fluid Mechanics in ME
When the Mach number is more than 6, the flow is called

Sub-sonic flow
Super-sonic flow
Hyper-sonic flow
Sonic flow

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Hydraulics and Fluid Mechanics in ME
A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is

lOkN
15 kN
20 kN
5kN

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