FLUIDS Flashcards

1
Q

Water kinematic viscosity
(cP, Poise, Pas,lb/fts)

A

1 cP
0.01 Poise
0.001 Pas
6.7310^-4 lb/ft*s

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2
Q

Water heat capacity
J/gK, BTU/lbmR, cal/g*K

A

4.184 J/gK,
1 BTU/lbmR,
1 cal/g*K

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3
Q

Water density
lbm/ft³, g/cm³, kg/m³, g/mL

A

62.4 lbm/ft³,
1 g/cm³
1000 kg/m³,
1g/mL

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4
Q

1 hp to lbf*ft/s and W

A

1 hp = 550 lbf*ft/s = 745.1 W

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5
Q

BTU to lbf*ft

A

1 BTU = 778 lbf*ft

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6
Q

miles to ft

A

1 mi = 5280 ft

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7
Q

ft³ to gal
and bbl to gal

A

1 ft³ = 7.481 gallons
1 bbl (barrel of crude oil) = 42 gal

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8
Q

The dimensionless quantity regarded as the ratio of the shear stress to the kinetic energy.

A

Fanning friction number

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9
Q

Pitot tube measures

A

local velocity

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10
Q

A popular type of heat exchanger for cooling large quantities of fluid is the

A

shell and tube heat exchanger

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11
Q

Vena-contracta formed during flow of a liquid through an orificemeter has
minimum liquid cross-section.

minimum liquid cross-section.
more diameter compared to orifice diameter.
minimum velocity of fluid stream.
none of these.

A

minimum liquid cross-section.

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12
Q

As per Newton’s law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to(where, μ = fluid viscosity)

A

μ

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13
Q

Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will __________ the gas discharge pressure.

increase
decrease
not change
exponentially decrease

A

increase

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14
Q

In continuous fluidisation

solids are completely entrained.
the pressure drop is less than that for batch fluidisation.
there is no entrainment of solids.
velocity of the fluid is very small.

A

solids are completely entrained.

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15
Q
A
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