Chemical Engineering MCQs

Page No. 155

The continuity equation___________________?


aIs independent of the compressibility of the fluid


bIs dependent upon the viscosity of the fluid


cRepresents the conservation of mass


dNone of these



Rubber latex is an example of a ______________ fluid?


aPseudo plastic


bBingham plastic


cDilatent


dNewtonian


View Answer Pseudo plastic

Entropy change for an irreversible isolated system is__________________?


a


b 0


c < 0


d> 0


View Answer > 0

Specific speed for a centrifugal pump is___________________?


aN √Q/H3/4


bN √Q/H2/3


cN3D5/H1/3


dN √Q/H


View Answer N √Q/H3/4

_____________ law of thermodynamics ascertains the direction of a particular spontaneous process?


a Zeroth


b First


c Second


dThird


View Answer Second

For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to____________________?


aR


bR2


cR4


dR0.5


View Answer R4

On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will____________________?


a Increase


bDecrease


cRemain same


dIncrease in summer and will decrease in winter


View Answer Increase

The fluid jet discharging from a 2″ diameter orifice has a diameter of 1.75″ at its venacontracta. The co-efficient of contraction is___________________?


a1.3


b0.766


c0.87


dNone of these


View Answer 0.766

The principle applied in liquefaction of gases is_____________________?


aAdiabatic expansion


bJoule-Thomson effect


c Both A. and B


dNeither A. nor B


View Answer Both A. and B

In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is___________________?


aConstant along a streamline


bNot constant along a streamline


cIncreased in the direction of flow


dNone of these



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