FLUID MECHANICS QUIZ

Cavitation in a centrifugal pump results from

Low barometric pressure

High discharge rate

High discharge velocity

High discharge pressure

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The equivalent diameter for flow through a rectangular duct of width B and height H is

4HB/(H + B)

HB/2(H + B)

HB/(H + B)

2HB/(H + B)

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Plunger pumps are used for

Slurries

Viscous mass

None of these

Higher pressure

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A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an __________ fluid.

Newtonion

Incompressible

Ideal

Non-Newtonion

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What is the value of Fanning friction factor f ' for smooth pipe at NRe = 10⁶ approximately?

0.1

0.003

0.3

0.01

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Rise of liquid in a capillary tube is due to

Cohesion

Both A & B

Neither A nor B

Adhesion

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Multistage compressors are used in industry, because they

Resemble closely to isothermal compression

Reduce the size requirement

Are easy to control

Reduce the cost of compressor

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Velocity distribution for flow between two fixed parallel plates

Is zero at the plates and increases linearly to the midplane

Varies parabolically across the section

Is constant over the entire cross-section

None of these

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Path followed by water jet issuing from the bottom of a water tank will be a

Zig-zag path (which is geometrically undefined)

Hyperbola

Horizontal straight line

Parabola (vertex being at the opening)

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The ratio of pressure forces to inertial forces is called the __________ number.

Euler

Mach

Reynold

Froude

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