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QUESTION: 1

Newton’s law of viscosity for a fluid states that the shear stress is

Solution:

QUESTION: 2

A real fluid is any fluid which

Solution:

QUESTION: 3

When subjected to shear force, a fluid

Solution:

QUESTION: 4

An Ideal Fluid

Solution:

Ideal Fluid: A fluid, which is incompressible and is having no viscosity is known as ideai fluid. Ideal fluid is only an imaginary fluid as all the fluids, which exists have some viscosity.

QUESTION: 5

Which one of the following is defined as force per unit length?

Solution:

Surface tension is defined as line force per unit length.

QUESTION: 6

Newton’s law of viscosity depends upon the

Solution:

According to Newtons law of viscosity

QUESTION: 7

The fluid which obey’s the Newton’s Saw of viscosity

Solution:

The fluid which obeys the Newton’s law of viscosity is known as Newtonion fluid e.g.: Air, water, Kerosene.

QUESTION: 8

The General relationship between shear stress (τ) and velocity Gradient for a fluid can be written as

Then the fluid known as

Solution:

In the expression:

If n < 1, B = 0

then it is known as pseudo plastic

QUESTION: 9

Surface tension is due to

Solution:

Surface tension a line force caused by cohesion of fluid particle at the surface, the property of cohesion enables a liquid to resist tensile stress.

QUESTION: 10

Which one of the following is correct dimension of surface tension?

Solution:

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