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.Management Sciences
Category: Hydraulics and Fluid Mechanics
Newton’s law of viscosity is a relationship between________________?
A. shear stress anctthejiate of angular distortion
B. shear stress and viscosity
C. shear stress, velocity and viscosity
D. pressure, velocity and viscosity
E. shear stress, pressure and rate of angular distortion
The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as___________________?
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
E. streamline flow
For pipes, laminar flow occurs when Roynolds number is__________________?
A. less than 2000
B. between 2000 and 4000
C. more than 4000
D. less than 4000
E. none of the above
For measuring flow by a venturimeter, if should be installed in__________________?
A. vertical line
B. horizontal line
C. inclined line with flow downward
D. inclined line with upward flow
E. in any direction and in any location
The process of diffusion of one liquid into the other through a semi-permeable membrane is called _______________?
A. viscosity
B. osmosis
C. surface tension
D. cohesion
E. diffusivity
If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water___________________?
A. 51 cm
B. 50 cm
C. 52 cm
D. 52.2 cm
E. 51.7 cm
The speed of sound in a ideal gas varies directly as its ______________?
A. pressure
B. temperature
C. density
D. modulus of elasticity
E. absolute temperature
An open vessel of water is accelerated up an inclined plane. The free water surface will___________________?
A. be horizontal
B. make an angle in direction of inclination of inclined plane
C. make an angle in opposite direction to inclination of inclined plane
D. any one of above is possible
E. none of the above
The difference of pressure between the inside and outside of a liquid drop is_____________?
A.p = Txr
B.p = T/r
C. p = T/2r
D.p = 2T/r
E. none of the above
In an isothermal atmosphere, the pressure__________________?
A. decreases linearly with elevation
B. remains constant
C. varies in the same way as the density
D. increases exponentially with elevation
E. unpredictable
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