Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 43 of 73)

Attempt Fluid Mechanics for Chemical Quiz
In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of___________________?
A. Relative roughness
B. Absolute roughness
C. Friction co-efficient for flows at equal reynold number
D. All a., b. & c.
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At a constant speed of the centrifugal pump, it‟s _____________ the impeller diameter?
A. Capacity varies directly with
B. Head varies as the square of
C. Horsepower varies as the cube of
D. All a., b. and c.
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Foot valves provided in pumps are ____________ valves?
A. Relief
B. Three/four way
C. Pressure reducing
D. Directional control
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Which of the following can be used for the direct measurement of volumetric flow rate of slurry ?
A. Venturimeter
B. Orificemeter
C. Rotameter
D. Pitot tube
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The dimension of dynamic viscosity is__________________?
A. Ml-1t-1
B. L2t-1
C. Lt-2
D. Ml-1t-2
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In case of centrifugal fan or blower, the gas capacity varies as __________________?
A. Speed
B. (speed)2
C. (speed)3
D. (speed)0.5
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The maximum delivery pressure of compressors can be upto _____________ atmospheres?
A. 10
B. 100
C. 250
D. 1000
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Dean number is concerned with the____________________?
A. Fluid-particle interaction
B. Fluid flow through helical pipes
C. Power consumption in agitated vessels
D. Psychrometry
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A pipe is defined as ‘hydraulically smooth’, if the friction factor_________________?
A. Is not a function of reynolds number
B. For a given reynolds number remains constant even on further smoothening of the pipe
C. Is zero irrespective of the reynolds number
D. None of these
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The normal stress is the same in all directions at a point in a fluid, when the fluid is__________________?
A. Non-viscous
B. Incompressible
C. Both a. and b.
D. Having no motion of one fluid layer relative to the other
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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