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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If no resistance is encountered by displacement, such a substance is known as

Fluid
Gas
Water
Ideal fluid

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Hydraulics and Fluid Mechanics in ME
The value of mass density in kgsecVm4 for water at 0°C is

1000
100
101.9
1

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Hydraulics and Fluid Mechanics in ME
The Reynold's number of a ship is __________ to its velocity and length.

Square root of velocity
None of these
Directly proportional
Inversely proportional

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Hydraulics and Fluid Mechanics in ME
Euler’s dimensionless number relates the following

viscous force and inertial force
inertial force and gravity
pressure force and inertial force
viscous force and buoyancy force

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Hydraulics and Fluid Mechanics in ME
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is

4000 kg/cm²
400 kg/cm²
40 × 10⁶ kg/cm²
40 × 10⁵ kg/cm²

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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

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

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