Chemical Engineering MCQs

Page No. 173

For flow through a venturi at a particular discharge, the correct relationships among heads at points X, Y, and Z are__________________?


ah1 > h2 < h3


bh1 > h2 > h3


ch2 < h1 < h3


dh1 < h2 < h3


View Answer h1 > h2 < h3

The discharge through a V-notch weir varies as___________________?


aH3/2


bH1/2


cH5/2


dH2/3


View Answer H5/2

When larger particles e.g., grains are subjected to fluidisation, the corresponding bed produced is termed as the _______________ bed?


aSpouted


bSluggish


cBoiling


dTeeter


View Answer Spouted

The Stoke’s stream function applies to the________________?


aIrrotational flow only


bIdeal/non i viscous fluids only


cCases of axial symmetry


dNone of these



When a fluid flows over a solid surface, the___________________?


aVelocity is uniform at any cross-section


bVelocity gradient is zero at the solid surface


cResistance between the surface & the fluid is lesser as compared to that between the fluid layers themselves


dVelocity is not zero at the solid surface



Interstage coolers are provided in a multistage compressor to____________________?


aSave power in compressing a given volume to a given pressure


bCool the delivered air


cAchieve the exact delivery pressure


dNone of these



The rate of change of moment of momentum represents the ______________ by the fluid?


aTorque applied


bForce exerted


cWork done


dPower developed


View Answer Torque applied

Boiler feed water pump is usually a ______________ pump?


aReciprocating


bGear


cMultistage centrifugal


dDiaphragm



Boundary layer separation occurs when the____________________?


aPressure reaches a minimum


bCross-section of the channel is reduced


cValve is closed in a pipeline


dVelocity of sound is reached



The ratio of inertial forces to gravity forces is called the ______________ number?


aMach


bFroude


cEuler


dWeber


View Answer Froude

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