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.Management Sciences
Category: Fluid Mechanics
Size of a venturimeter is specified by________________?
A. pipe diameter
B. throat diameter
C. angle of diverging section
D. both pipe diameter as well as throat diameter
The eddy viscosity for turbulent flow is______________?
A. a function of temperature only
B. a physical property of the fluid.
C. dependent on the flow
D. independent of the flow
The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is________________?
A. 0.223 R
B. 0.423 R
C. 0.577 R
D. 0.707 R
where R is radius of pipe
The total pressure on a plane surface inclined at an angle 9 with the horizontal is equal to_______________?
A. PA
B. pA sin 9
C. pA cos 9
D. pA tan 9
where p is pressure intensity at centroid of area and A is area of plane surface
Newton’s law of viscosity relates________________?
A. intensity of pressure and rate of angular deformation
B. shear stress and rate of angular deformation
C. shear stress, viscosity and temperature
D. viscosity and rate of angular deformation
In steady flow of a fluid, the total accele ration of any fluid particle______________?
A. can be zero
B. is never zero
C. is always zero
D. is independent of coordinates
Which of the following has highest coefficient of discharge ?
A. sharp edged orifice
B. venturimeter
C. Borda’s mouthpiece running full
D. CipoUetti weir
Coefficient of velocity of venturimeter_________________?
A. is independent of Reynolds number
B. decreases with higher Reynolds number
C. is equal to the coefficient of discharge of venturimeter
D. none of the above
In a forced vortex motion, the velocity of flow is________________?
A. directly proportional to its radial distance from axis of rotation
B. inversely proportional to its radial distance from the axis of rotation
C. inversely proportional to the square of its radial distance from the axis of rotation
D. directly proportional to the square of its radial distance from the axis of rotation
If the elevation of hydraulic grade line at the junction of three pipes is above the elevation of reservoirs B and C and below reservoir A, then the direction of flow will be___________________?
A. from reservoir A to reservoirs B and C
B. from reservoir B to reservoirs C and A
C. from reservoir C to reservoirs A and B
D. unpredictable
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