The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is zero at the mid plane and varies linearly with distance from mid plane parabolic distribution across the section constant over the cross section zero at plates and increases linearly to midpoint TRUE ANSWER : ? YOUR ANSWER : ?
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the force of adhesion force of cohesion force of diffusion force of friction TRUE ANSWER : ? YOUR ANSWER : ?
In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is 50 M/SEC 33 M/SEC 40 M/SEC 22.5 M/SEC TRUE ANSWER : ? YOUR ANSWER : ?
The normal stress is same in all directions at a point in a fluid When there is no motion of one fluid layer relative to an adjacent layer only when the fluid is incompressible and has zero viscosity only when the fluid is frictionless irrespective of the motion of one fluid layer relative to an adjacent layer TRUE ANSWER : ? YOUR ANSWER : ?
Fluid is a substance that cannot be subjected to shear forces cannot remain at rest under action of any shear force always expands until it fills any container has the same shear stress.at a point regardless of its motion TRUE ANSWER : ? YOUR ANSWER : ?
The peoperty by virtue of which a liquid opposes relative motion between its different layers is called viscosity osmosis surface tension co-efficient of viscosity TRUE ANSWER : ? YOUR ANSWER : ?
The line of action of the buoyant force acts through the center of gravity of any submerged body centriod of the displaced volume of fluid center of the volume of floating body centroid of the volume of fluid vertically above the body TRUE ANSWER : ? YOUR ANSWER : ?
A perfect gas has constant viscosity None of these is incompressible is of theoretical interest TRUE ANSWER : ? YOUR ANSWER : ?
For measuring flow by a venturimeter, if should be installed in inclined line with upward flow horizontal line in any direction and in any location. vertical line TRUE ANSWER : ? YOUR ANSWER : ?
Mercury is often used in barometer because both (B) and (C) its vapour pressure is so low that it may be neglected it is the best liquid the height of barometer will be less TRUE ANSWER : ? YOUR ANSWER : ?