Fluid Mechanics - Chemical Engineering Questions and Answers

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A pitched-blade turbine draws __________ a straight blade turbine.

less power than

more power than

same power as

data insufficient to predict

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The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a

weir

pitot tube

Kennison nozzle

V-notch

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A centrifugal pump is called a turbine pump, if it is having a

turbine type impeller.

vaned diffusion casing.

rotating vaned volute.

none of these.

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Remote control valve is a __________ valve.

gate

butterfly

needle

globe

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Which of the following quantities are computed by using the hydraulic radius for non-circular ducts ?

Velocity and relative roughness.

Head loss and velocity.

Reynold number, relative roughness and head loss.

Reynolds number and friction factor.

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Centre of pressure in an immersed body is __________ the centre of gravity.

above

below

either above or below; depends on the liquid density

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The centre of pressure is

always below the centroid of the area.

always above the centroid of the area.

a point on the line of action of the resultant force.

at the centroid of the submerged area.

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The uniformity of a gas fluidised bed depends upon the __________ of the solid particles.

size

surface properties

both (a) and (b)

neither (a) nor (b)