Chemical Engineering MCQs

6108 MCQs  (Page 367 of 611)

Attempt Chemical Engineering Quiz
Newton’s law of viscosity relates the____________________?
A. Shear stress and velocity
B. Velocity gradient and pressure intensity
C. Shear stress and rate of angular deformation in a fluid
D. Pressure gradient and rate of angular deformation
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Which is the most efficient and best for measuring very small flow rate of gases ?
A. Venturimeter
B. Orificemeter
C. Rotameter
D. Flow nozzle
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For laminar flow of a fluid through a packed bed of spheres of diameter d, the pressure drop per unit length of bed depends upon the sphere diameter as_________________?
A. D
B. D2
C. D4
D. D̅ 2
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For laminar flow of Newtonian fluid in a circular pipe, the velocity distribution is a function of the distance ‘d’ measured from the centre line of the pipe, and it follows a ______________ relationship?
A. Logarithmic
B. Parabolic
C. Hyperbolic
D. Linear
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What is the shear rate at the pipe wall, in case of laminar flow of Newtonian fluids in a pipe of diameter ‘D’ & length ‘L’ incurring a pressure drop ‘Δp’ with average velocity ‘Vavg’ ?
A. D δp/8l
B. D δp/4l
C. 8 vavg/d
D. 4 vavg/d
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For turbulent flow of Newtonian fluid in a circular cross-section pipe, the ratio of maximum to average fluid velocity is ________________?
A. 0.5
B. 1
C. 0.66
D. < 0.5
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In Newton’s law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is___________________?
A. 0.44
B. 0.044
C. 4.4
D. 44
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In parallel pipe problems, the__________________?
A. Head loss is the same through each pipe
B. Discharge is the same through all the pipes
C. Total head loss is equal to the sum of the head losses through each pipe
D. None of these
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A tube is specified by its____________________?
A. Thickness only
B. Outer diameter only
C. Thickness & outer diameter both
D. Inner diameter
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Poise is converted into stoke by ___________________?
A. Multiplying with density (gm/c.c)
B. Dividing by density (gm/c.c)
C. Multiplying with specific gravity
D. Dividing by specific gravity
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Word of the Day
27 Jul
Widen
make or become wider.
چوڑا ہونا، کشادہ کرنے کا عمل

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