### Few Questions of Fluid Mechanics

1. What are the SI & CGS
units of viscosity & kinematic viscosity? What is the relation between the
SI & CGS

unit of viscosity? What is the value of viscosity of air & water at 288 K temperature?

2. (a)Define bulk modulus of elasticity without using any formula?

(b) Bulk modulus of elasticity of water is 2000000 kN/m2. A pressure of 10 bar is applied on water having

volume of 2m3. Find the change in volume of water in m3.

3. Find the flux of velocity having the components as 9x, -3y and 0 along the x, y and z axes respectively over the closed surface of the sphere given by x2 + y2 + z2 = 9.

4. A flow field is given by

5. The clearance space between a shaft and a concentric sleeve has been filled with a Newtonian fluid. The sleeve attains a speed of 600 mm/s when a force of 600N is applied to it parallel to the shaft. What force is needed if it is desired to move…

unit of viscosity? What is the value of viscosity of air & water at 288 K temperature?

2. (a)Define bulk modulus of elasticity without using any formula?

(b) Bulk modulus of elasticity of water is 2000000 kN/m2. A pressure of 10 bar is applied on water having

volume of 2m3. Find the change in volume of water in m3.

3. Find the flux of velocity having the components as 9x, -3y and 0 along the x, y and z axes respectively over the closed surface of the sphere given by x2 + y2 + z2 = 9.

4. A flow field is given by

*u = ay, v = bz & w =cx*. Determine whether the flow is rotational or irrorational.5. The clearance space between a shaft and a concentric sleeve has been filled with a Newtonian fluid. The sleeve attains a speed of 600 mm/s when a force of 600N is applied to it parallel to the shaft. What force is needed if it is desired to move…