A. Lies above the centroid of the plane surface
B. Is independent of the specific weight of the fluid
C. Is different for different fluids
D. Is at the centroid of the plane surface
Related Mcqs:
- The location of centre of pressure, which defines the point of application of the total pressure force on the surface, can be calculated by applying the principle of moments according to which “sum of the moment of the resultant force about an axis is equal to the sum of the components about the same axis”. The centre of pressure of a rectangular surface (of width ‘w’) immersed vertically in a static mass of fluid is at a depth of (where, y = depth of the liquid) ?
A. 1/(y/3)
B. 2y/3
C. 1/(y/4)
D. 3y/4 - Centre of pressure in an immersed body is ______________ the centre of gravity?
A. Above
B. Below
C. At
D. Either above or below; depends on the liquid density - The pressure intensity is the same in all directions at a point in a fluid________________?
A. Only when the fluid is frictionless
B. Only when the fluid is at rest having zero velocity
C. When there is no motion of one fluid layer relative to an adjacent layer
D. Regardless of the motion of one fluid layer relative to an adjacent layer - A rectangular surface 3′ × 4′, has the lower 3 edge horizontal and 6′ below a free oil surface (sp. gr. 0.8). The surface inclination is 300 with the horizontal. The force on one side of the surface is (where, y = specific weight of water) ?
A. 39.6y
B. 48y
C. 49.2y
D. 58y - The centre of pressure is_________________?
A. Always below the centroid of the area
B. Always above the centroid of the area
C. A point on the line of action of the resultant force
D. At the centroid of the submerged area - Drag co-efficient for flow past immersed body is the ratio of _____________ to the product of velocity head and density?
A. Shear stress
B. Shear force
C. Average drag per unit projected area
D. None of these - Drag is the force component exerted on an immersed object, ?
A. Passing the centroid of the body at 60°to the direction of motion
B. The component being parallel to the flow direction
C. The component being normal to the flow direction
D. None of these - Deformation drag, which is caused by widespread deformation of fluid around the immersed body____________________?
A. Occurs when NRe is very small
B. Is primarily a friction drag
C. Is independent of body length
D. Depends mainly on cross-sectional shape - The ______________ pressure is measured by a static tube?
A. Dynamic
B. Static
C. Total
D. None of these - The pitot static tube does not measure the _____________ pressure?
A. Static
B. Total
C. Difference in static & dynamic
D. All A., B. and C.
