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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The pressure intensity in kN/m2 (or kPa) at any point in a liquid is (where w = Specific weight of liquid, and h = Depth of liquid from the surface)

w/h
h/w
w
wh

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Hydraulics and Fluid Mechanics in ME
During the opening of a valve in a pipe line, the flow is

Unsteady
Laminar
Steady
Uniform

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies

Square of fan speed
Square root of fan speed
Directly as fan speed
Cube of fan speed

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Hydraulics and Fluid Mechanics in ME
A turbine pump is basically a centrifugal pump equipped additionally with

Backward curved blades
Adjustable blades
Vaned diffusion casing
Inlet guide blades

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Hydraulics and Fluid Mechanics in ME
The torque required to overcome viscous resistance of a collar bearing is (where R1 and R2 = External and internal radius of collar)

(μπ²N/60t) × (R₁⁴ - R₂⁴)
μπ²N/60t) × (R₁³ - R₂³)
(μπ²N/60t) × (R₁ - R₂)
(μπ²N/60t) × (R₁² - R₂²)

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Hydraulics and Fluid Mechanics in ME
The property of fluid by virtue of which it offers resistance to shear is called

viscosity
adhesion
surface tension
cohesion

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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