**MECHANICS OF FLUIDS**** Important questions ****CE6303**

MECHANICS OF FLUIDS Important questions CE6303 REGULATION 2013 ANNA UNIVERSITY free download. CE6303 Important questions free download.

**Sample MECHANICS OF FLUIDS Important questions:**

1. Define fluid mechanics.

It is the branch of science, which deals with the behavior of the fluids (liquids or

gases) at rest as well as in motion.

2. Define Mass Density.

Mass Density or Density is defined as ratio of mass of the fluid to its volume (V)

Density of water = 1 gm/cm3 or 1000 kg / m3.

3. Define Specific Weight.

It is the ratio between weight of a fluid to its volume.

g p g

Volume of fluid

Mass of fluid

Volume of fluid

Weight of fluid

Unit: N / m3

4. Define Viscosity.

Viscosity is defined as the property of fluid, which offers resistance to the movement of one layer of fluid over another adjacent layer of fluid.

When two layers move one over the other at different velocities, say u and u+ du, the viscosity together with relative velocity causes a shear stress acting between the fluid layers. The top layer causes a shear stress on the adjacent lower layer while the lower layer causes a shear stress on the adjacent top layer.

This shear stress is proportional to the rate of change of velocity.

5. Define Specific Gravity.

Specific gravity is the ratio of the weight density or density of a fluid to the weight density or density of standard fluid. It is also called as relative density. Unit : Dimension less. Denoted as: ‘S’

Semester | 3 |

Regulation | 2013 |

Subject Name | Mechanics of fluids |

Subject Code | CE6303 |

File Type |