Chemical Engineering MCQs

6108 MCQs (Page 380 of 611)

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Diaphragm valves are used for handling _______________ fluids?

A. Corrosive
B. Viscous
C. Non-newtonian
D. Solid suspended

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Vane anemometer __________________?

A. Is an area meter
B. Is a variable head meter
C. Rotates an element at a speed determined by the velocity of the fluid in which the meter is
ImmErsed

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The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for ______________ fluid?

A. Newtonian
B. Dilatant
C. Pseudo-plastic

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The time of oscillation of a floating body is _________________?

A. Longer, if metacentric height is increased
B. Independent of the metacentric height
C. Dependent on the buoyant forces only
D. None of these

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For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance) ?

A. V/vmax = (x/r)1/7
B. V/vmax = (r/x)1/7
C. V/vmax = (x.r)1/7
D. None of these

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The Reynolds number for an ideal fluid flow is _________________?

A. 4
B. 2100-4000
C. 4000
D. ∞

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A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, then the new head will be ______________ metres?

A. 2
B. 4
C. 8
D. 5.5

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Enamels and paints are generally _______________ fluid?

A. Rheopectic
B. Pseudo-plastic
C. Thixotropic
D. Dilatant

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The distance between metacentre and ______________ is called metacentric height?

A. Water surface
B. Centre of gravity
C. Centre of buoyancy
D. None of these

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______________ is an example of axial flow impeller?

A. Paddle
B. Turbine
C. Propeller
D. All a., b. and c.

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