Chemical Engineering MCQs

Page No. 168

It is possible to integrate an automatic flow controller to a________________?


aFlow nozzle

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bVenturimeter

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cRotameter

✓


dNone of these

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View Answer Rotameter

The unit of bulk modulus of elasticity for a liquid in S.I. unit is____________________?


aN

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bN/m

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cN/m2

✓


dN/m3

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View Answer N/m2

For flow past a flat plate, if „x‟ is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to________________?


a√x

✓


b1/√x

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cx

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d1/x

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View Answer √x

Path followed by water jet issuing from the bottom of a water tank will be a__________________?


aParabola (vertex being at the opening)

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bHyperbola

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cHorizontal straight line

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dZig-zag path (which is geometrically undefined)

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Location of vena-contracta in an orificemeter does not depend upon the________________?


aType of orifice

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bDensity, viscosity & compressibility of the fluid

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cRatio of pipe diameter to orifice diameter

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dPipe roughness

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View Answer Type of orifice

The maximum head that can be developed by a single impeller is _____________ ft?


a25

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b100

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c250-300

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d1000

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View Answer 250-300

In case of Venturimeter, friction losses are about _____________ percent of maximum velocity head?


a2

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b8

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c12

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d20

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View Answer 2

Drag co-efficient in hindered settling is _____________ that in free settling?


aLess than

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bEqual to

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cNot necessarily greater than

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dAlways greater than

✓


View Answer Always greater than

Working of a _______________ pump characterises mixed flow?


aTurbine

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bPiston

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cDiaphragm

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dNone of these

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View Answer Turbine

Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump ?


aIncreasing the impeller speed and the volute area

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bIncreasing the number of vanes in the impeller

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cMounting of two or more impellers in series on a single shaft

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dEither of A., B. or C.

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