1. It is a dimensionless group commonly encountered in fluid mechanics which is also defined as the ratio of inertial force to viscous force

2. Non-newtonian fluids such as gypsum suspensions in water show increasing shear stress with time at constant shear rate. What do you call this fluid?

3. Lugwig Prandtl defined this thin layer where velocity decreases from the invicid, potential flow velocity to zero (relative velocity) at the solid surface. It is called

4. One method to estimate the fitting loss is the _______________ which reports the losses in piping element as the length of straight pipe which would have the same loss.

5. Which of the following is/are NOT TRUE for Newtonian fluid?
a. Water and air are examples of a Newtonian fluid.
b. Newton’s law of viscosity describe the behaviour of this fluid.
c. When the shear stress is applied to this fluid, the velocity gradient that it produces in the direction
perpendicular to the stress is proportional to the applied shear stress.
d. The viscosity is independent to the applied shear stress.