Chemical Engineering MCQs

Page No. 250

The ______________ pressure is measured by a static tube?


aDynamic


bStatic


cTotal


dNone of these


View Answer Static

Pressure drop in packed bed for turbulent flow is given by the ______________ equation?


aKozeny-Carman


bBlake-Plummer


cLeva’s


dHagen-Poiseuille’s


View Answer Blake-Plummer

Air vessel fitted to a reciprocating pump____________________?


aIncreases the work done


bDecreases the work done


cCauses cavitation


dResults in non-uniform discharge



The maximum discharge through a circular channel takes place, when the depth of the fluid flow is ______________ times the pipe diameter?


a0.25


b0.5


c0.66


d0.95


View Answer 0.95

A pressure of 10 m head of water is equivalent to ______________ kN/m2?


a98


b147


c196


d49


View Answer 98

Fanning friction factor equation applies to the _____________ fluid flow?


aNon-isothermal condition of


bCompressible


cBoth A. and B.


dNeither A. nor B.


View Answer Neither A. nor B.

A centrifugal pump is used to pump water through a horizontal distance of 150 m, and then raised to an overhead tank 10 m above. The pipe is smooth with an I.D of 50 mm. What head (m of water) must the pump generate at its exit E. to deliver water at a flow rate of 0.001 m3/s? The Fanning friction factor, f is 0.0062 ?


a10 m


b11 m


c11.8 m


d30 m


View Answer 11 m

Air vessel of a reciprocating pump is initially filled with___________________?


aAtmospheric air


bCompressed air


cWater


dNone of these


View Answer Compressed air

Fluid flow through a packed bed is represented by the ______________ equation?


aFanning’s


bErgun’s


cHagen-Poiseuille’s


dNone of these


View Answer Ergun’s

The location of centre of pressure, which defines the point of application of the total pressure force on the surface, can be calculated by applying the principle of moments according to which “sum of the moment of the resultant force about an axis is equal to the sum of the components about the same axis”. The centre of pressure of a rectangular surface (of width ‘w’) immersed vertically in a static mass of fluid is at a depth of (where, y = depth of the liquid) ?


a1/(y/3)


b2y/3


c1/(y/4)


d3y/4


View Answer 2y/3

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