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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Medium specific speed of turbine implies it is

Any one of the above
Francis turbine
Propeller turbine
Impulse turbine

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Hydraulics and Fluid Mechanics in ME
The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is (where R is radius of pipe)

0.707 R
0.423 R
0.223 R
0.577 R

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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
Sonic flow
Super-sonic flow
Hyper-sonic flow

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Hydraulics and Fluid Mechanics in ME
Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?

Hydraulic torque converter
Hydraulic ram
Hydraulic intensifier
Hydraulic accumulator

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Hydraulics and Fluid Mechanics in ME
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.

None of these
Viscous
Compressible
Incompressible

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Hydraulics and Fluid Mechanics in ME
A flow is called super-sonic if the

Mach number is between 1 and 6
Velocity of flow is very high
Discharge is difficult to measure
None of these

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