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.Management Sciences
Category: Fluid Mechanics for Chemical
Volute of a centrifugal pump should be designed in a fashion, such that the________________?
A. Kinetic head gets converted into static head
B. Moving stream gradually reduces velocity
C. Mean velocity remains constant
D. None of these
In laminar flow through a round tube, the discharge varies ______________________?
A. Linearly as the viscosity
B. Inversely as the pressure drop
C. Inversely as the viscosity
D. As the square of the radius
A fluid whose apparent viscosity increases with shear rate is termed as the _____________ fluid?
A. Newtonian
B. Viscous
C. Dilatant
D. Non-viscous
The losses in open channel flow generally vary as the ________________?
A. Inverse of the roughness
B. First power of the roughness
C. Square of the velocity
D. Inverse square of hydraulic radius
Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an ________________?
A. Pitot tube
B. Venturimeter
C. Orificemeter
D. Rotameter
The ______________ pressure is measured by a static tube?
A. Dynamic
B. Static
C. Total
D. None of these
Upto what value of ‘Mach number’, a fluid may be considered as incompressible ?
A. 0.03
B. 0.3
C. 3
D. 10
In a free vortex, the_____________________?
A. Velocity changes linearly with radial distance
B. Flow is necessarily rotational
C. Radial component of velocity is same everywhere
D. Stream lines are not circular
Propellers are____________________?
A. Axial flow mixers
B. Low speed impeller
C. Used for mixing liquids of high viscosity
D. Radial flow mixers
Which of the following properties of a fluid is responsible for offering resistance to shear ?
A. Surface tension
B. Viscosity
C. Specific gravity
D. All A., B., and C.
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