A large Roynold number is indication of turbulent flow highly turbulent flow. LAMINAR FLOW smooth and streamline flow 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 diffusion force of cohesion force of friction force of adhesion TRUE ANSWER : ? YOUR ANSWER : ?
The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe) 2/3 R 1/3 R 1/2 R 3/4 R TRUE ANSWER : ? YOUR ANSWER : ?
Least possible value of correction factor for i) kinetic energy is zero ii) kinetic energy is 1 iii) momentum is zero iv) momentum is 1 The correct statements are (i) and (iii) (i) and (iv) (ii) and (iii) (ii) and (iv) TRUE ANSWER : ? YOUR ANSWER : ?
The normal stress is same in all directions at a point in a fluid only when the fluid is incompressible and has zero viscosity only when the fluid is frictionless When there is no motion of one fluid layer relative to an adjacent layer irrespective of the motion of one fluid layer relative to an adjacent layer TRUE ANSWER : ? YOUR ANSWER : ?
The surface tension of mercury at normal temperature compared to that of water is same more less more or less depending on size of glass tube TRUE ANSWER : ? YOUR ANSWER : ?
Ay between two stream lines represents head velocity pressure discharge TRUE ANSWER : ? YOUR ANSWER : ?
Select the correct statement A barometer reads the difference be-tween local and standard atmospheric pressure Local atmospheric pressure is always below standard atmospheric pressure Local atmospheric pressure depends upon elevation of locality only Standard atmospheric pressure is the mean local atmospheric pressure a* sea level TRUE ANSWER : ? YOUR ANSWER : ?
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to less than the weight of the body weight of the fluid displaced by the body more than the weight of the body the weight of the body TRUE ANSWER : ? YOUR ANSWER : ?
The difference of pressure between the inside and outside of a liquid drop is (a)p = Txr p = T/2r (d)p = 2T/r (b)p = T/r TRUE ANSWER : ? YOUR ANSWER : ?