Hydraulics & Fluid Mechanics
Drag force is a function of i) projected area of the body ii) mass density of the fluid iii) velocity of the body The correct answer is

(ii) and (iii)
(i), (ii) and (iii)
(i) and (ii)
(i) and (iii)

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Hydraulics & Fluid Mechanics
The normal stress is same in all directions at a point in a fluid

only when the fluid is frictionless
irrespective of the motion of one fluid layer relative to an adjacent layer
When there is no motion of one fluid layer relative to an adjacent layer
only when the fluid is incompressible and has zero viscosity

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