A. highest intensity of pressure occurs around the circumference at right angles to flow
B. lowest pressure intensity occurs at front stagnation point
C. lowest pressure intensity occurs at rear stagnation point
D. total drag is zero
Related Mcqs:
- A fluid of kinematic viscosity 0.4 cm2/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be__________________?
A. less than 1 m/sec
B. 1 m/sec
C. 1.5 m/sec
D. 2 m/sec - An ideal fluid is_______________?
A. one which obeys Newton’s law of viscosity
B. frictionless and incompressible
C. very viscous
D. frictionless and compressible - 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 - If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is__________________?
A. 0.25
B. 0.50
C. 1.0
D. none of the above - The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is_______________?
A. constant over the cross section
B. parabolic distribution across the section
C. zero at the mid plane and varies linearly with distance from mid plane
D. zero at plates and increases linearly to midpoint - If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will________________?
A. rise until its weight equals the buoyant force
B. tend to move downward and it may finally sink
C. float
D. none of the above - The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is______________?
A. at the centroid of the submerged area
B. always above the centroid of the area
C. always below the centroid of the area
D. none of the above - The boundary layer thickness in turbulent flow varies as______________?
A. x”7
B. x,/2
C. x4/5
D. x3/5where x is the distance from leading edge
- In series-pipe problems_______________?
A. the head loss is same through each pipe
B. the discharge is same through each pipe
C. a trial solution is not necessary
D. the discharge through each pipe is added to obtain total discharge - With the same cross-sectional area and immersed in same turbulent flow, the largest total drag will be on__________________?
A. a circular disc of plate held normal to flow
B. a sphere
C. a cylinder
D. a streamlined body