CE6451 FMM 2marks-16marks, FLUID MECHANICS AND MACHINERY Question Bank, FMM Short Answers – MECH 3rd SEM Anna University

SUBJECT NAME: FLUID MECHANICS AND MACHINERY
UNIT I- INTRODUCTION

PART – A ( 2 Marks )
01. Why are some fluids classified as Newtonian fluid? Give examples to Newtonian fluids.(NOV’2)

2. What is specific gravity? How is it related to density? (Apr’08)
3. Define the term pressure .What are its units? (Dec’05)
4. State Pascal’s law? (Dec’05 & Dec’08)
5. What is meant by stagnation pressure?
6. What is the difference between gauge pressure and absolute pressure?
7. Define compressibility and viscosity of a fluid?
8. State the Newton’s law of viscosity?
9. What is viscosity? What is the cause of it in liquids and in gases?
10. What is the effect of temperature on viscosity of water and that of air?
11. Define capillarity?
12. Explain the effect of property of capillarity
13. Express 3m of water head in cm of mercury and pressure in Kpa?
14. What are the three major assumptions made in the derivation of the Bernoulli’s equation?(Apr’03)
15. Mention any three applications of bernouills equation? (Apr’05)

1. Find the height through which water rises by capillary action in a 2mm bore, if surface tension at the prevailing temp is 0.075g/cm (APR-03)
2. Calculate the capillary rise in glass tube of 3mm dia when immersed in mercury take the surface tension and angle of contact of mercury as 0.52N/m and 1300 respectively .Also determine the minimum size of the glass tube, if it is immersed in water, given that the surface tension of water is 0.0725N/m and the capillary rise in the tube is not to exceed 0.5mm.(NOV-03)