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
Related Mcqs:
- A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of________________?
A. 3.75 m
B. 4.0 m
C. 4.2m
D. 4.5m - 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 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 9where p is pressure intensity at centroid of area and A is area of plane surface
- The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as__________________?
A. center of gravity
B. center of buoyancy
C. center of pressure
D. metacentre - 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 - A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is___________________?
A. zero
B. one-fourth its value when cylinder was full
C. one-half its value when cylinder was full
D. cannot be predicted from the given data - 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 depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be_________________?
A. 0.423 D
B. 0.577 D
C. 0.223 D
D. 0.707 Dwhere D is the depth of flow
- The motion of air mass in a tornado is a________________?
A. free vortex motion
B. forced vortex motion
C. free vortex at center and forced vortex outside
D. forced vortex at center and free vortex outside
