a For a Newtonian fluid b Which one of the following stateme

a) For a Newtonian fluid:

b) Which one of the following statement is incorrect:

Solution

a)

1.- False (Shear stress is proportional to velocity gradient)

2.- false (Newtonian fluid is a fluid in which the viscous stresses arising from its flow, at every point, are linearly proportional to the local strain rate.)

3. true (Shear stress is proportional to velocity gradient))

4. false (Shear stress is proportional to velocity gradient))

b) 1. correct (The gas viscosity will increase with temperature. According to the kinetic theory of gases, viscosity should be proportional to the square root of the absolute temperature, in practice, it increases more rapidly.

2. incorrect(from first)

3. incorrect(it is non newtonian)

4. correct

Gasoline: 0.006 (Poise)

Water: 0.01