Chemical Engineering - Fluid Mechanics

1.
Cocks are used to control
water
any liquid
solids
none of these
Answer: Option
Explanation:
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2.
If in a flow field, between any two points, then the flow must be
steady, incompressible, irrotational.
steady, compressible, irrotational.
steady, compressible and along a streamline.
unsteady, incompressible, irrotational.
Answer: Option
Explanation:
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3.
The dimension of surface tension is
ML-2
MT-2
MLT-2
ML-2T
Answer: Option
Explanation:
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4.
Pick out the correct statement.
Fanning friction factor is inversely proportional to Reynolds number always.
The property of a randomly packed bed (with raschig rings) is given by the ratio of the total volume to the volume of voids in the bed.
Mach number in an incompressible fluid is always unity.
Mach number is given by the ratio of the speed of the fluid to that of sound in the fluid under conditions of flow.
Answer: Option
Explanation:
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5.
The friction factor is
always inversely proportional to the Reynolds number.
not dimensionless.
not dependent on the roughness of the pipe.
none of these.
Answer: Option
Explanation:
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