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.Management Sciences
Category: Fluid Mechanics
A one dimensional flow is one which_________________?
A. is uniform flow
B. is steady uniform flow
C. takes place in straight lines
D. involves zero transverse component of flow
E. takes place in one dimension
A large Roynold number is indication of________________?
A. smooth and streamline flow
B. laminar flow
C. steady flow
D. turbulent flow
E. highly turbulent flow
Uniform flow occurs when ___________________?
A. the flow is steady
B. the flow is streamline
C. size and shape of the cross section in a particular length remain constant
D. size and cross section change uniformly along length
E. flow occurs at constant fate
A fluid in equilibrium can’t sustain____________________?
A. tensile stress
B. compressive stress
C. shear stress
D. bending stress
E. all of the above
A pressure of 25 m of head of water is equal to_________________?
A. 25 kN/m2
B. 245 kN/m2
C. 2500 kN/m2
D. 2.5kN/m2
E. 12.5 kN/m2
A liquid would wet the solid, if adhesion forces as compared to cohesion forces are________________?
A. less
B. more
C. equal
D. less at low temperature and more at high temperature
E. there is no such criterion
The resultant of all normal pressures acts___________________?
A. at e.g. of body
B. at center of pressure
C. vertically upwards
D. at metacentre
E. vertically downwards
Normal depth in open channel flow is the depth of flow corresponding to_______________?
A. steady flow
B. unsteady flow
C. laminar flow
D. uniform flow
E. critical flow
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?
A. 0.5
B. 0.4
C. 0.515
D. 0.5
E. none of the above
Two pipe systems can be said to be equivalent, when the following quantities are same__________________?
A. friction loss and flow
B. length and diameter
C. flow and length
D. friction factor and diameter
E. velocity and diameter
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