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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of solids
specific gravity of liquids
relative humidity
specific gravity of gases

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Hydraulics and Fluid Mechanics in ME
The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is

0.611 stoke
0.0116 stoke
0.0611 stoke
0.116 stoke

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Eight times
Four times
Double
Sixteen times

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Hydraulics and Fluid Mechanics in ME
A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is

13,500 kg
18,000 kg
27,000 kg
9,000 kg

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece is

0.855
0.707
0.375
0.5

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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

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

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