CE6303 MF Important Questions, MECHANICS OF FLUIDS Answer Key – CIVIL 3rd SEM Anna University

UNIT I FLUID PROPERTIES AND FLUID STATICS

PART – A

1. Define fluid and fluid mechanics.
2. Define real and ideal fluids.
3. Define mass density and specific weight.
4. Distinct b/w statics and kinematics.
5. Define viscosity.
6. Define specific volume.
7. Define specific gravity.
8. Distinct b/w capillarity and surface tension.
9. Calculate the specific weight, density and specific gravity of 1 liter liquid which weighs7N.

10. State Newton’s law of viscosity.

11. Name the types of fluids.
12. Define compressibility.
13. Define kinematic viscosity.
14. Find the kinematic viscosity of oil having density 981 kg/m3. The shear stress at a pointin oil is 0.2452N/m2 and velocity gradient at that point is 0.2/sec.
15. Determine the specific gravity of a fluid having 0.05 poise and kinematic viscosity 0.035stokes.
16. Find out the minimum size of glass tube that can be used to measure water level if thecapillary rise is restricted to 2 mm. Consider surface tension of water in contact with airas 0.073575 N/m.
17. Write down the expression for capillary fall.
18. Explain vapour pressure and cavitation.