A. Above
B. Below
C. At
D. Either above or below; depends on the liquid density
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 of a plane surface of arbitrary shape immersed vertically in a static mass of fluid________________?
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 - A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be _______________ cms?
A. 17
B. 42
C. 84
D. 1.8 - Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of_________________?
A. Powder & granular solids
B. Liquids
C. Low melting point semi-solids
D. All A, B & C - 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 - The line of action of the buoyant force passes through the centre of gravity of the_______________________?
A. Submerged body
B. Displaced volume of the fluid
C. Volume of fluid vertically above the body
D. Horizontal projection of the body - The pressure drop per unit length of pipe incurred by a fluid ‘X’ flowing through pipe is Δp. If another fluid ‘Y’ having both the specific gravity & density just double of that of fluid ‘X’, flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be__________________?
A. Δp
B. 2Δp
C. Δp2
D. Δp/2 - For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively) ?
A. G is above B
B. B is above G
C. B & G coincide
D. None of these - A floating/submerged body is always stable, if its centre of gravity___________________?
A. Lies above its centre of buoyancy
B. And centre of buoyancy coincide
C. Lies below its centre of buoyancy
D. Lies above its metacentre - Reynolds number for water flow through a tube of I.D. 5 cm is 1500. If a liquid of 5 centipoise viscosity and 0.8 specific gravity flows in the same pipe at the same velocity, then the pressure drop will______________________?
A. Increase
B. Decrease
C. Remain same
D. Data insufficient to predict pressure drop
