Chemical Engineering MCQs

6108 MCQs  (Page 406 of 611)

Attempt Chemical Engineering Quiz
The velocity profile for a Bingham plastic fluid flowing (under laminar conditions) in a pipe is__________________?
A. Parabolic
B. Flat
C. Flat near the wall and parabolic in the middle
D. Parabolic near the wall and flat in the middle
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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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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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