Module One

Question 1

Fluids divided into

Answer 1

Liquid and gases

Question 2

hard to compress as it follows the shape of its container with an upper free surfaces.

Answer 2

Liquid

Question 3

is easy to compress as it also expands to fill its container where there is no free surface.

Answer 3

Gas

Question 4

Characteristics of Fluid

Answer 4

Compressibility ● Density ● Pressure ● Buoyancy ● Viscosity

Question 5

Applying pressure to a fluid in order to put greater mass into a small container

Answer 5

Compressibility

Question 6

Applying pressure to a fluid in order to put greater mass into a small container

Answer 6

Compressibility

Question 7

is more compressible than liquid

Answer 7

Gas

Question 8

defined as the mass contained in a unit volume.

Answer 8

Density

Question 9

is a measurement of the force per unit area on a object in the fluid or on the surface of a closed container.

Answer 9

Fluid pressure

Question 10

This pressure can be caused by

Answer 10

gravity, acceleration, or by forces outside a closed container.

Question 11

is defined as force divided by the area on which the force is pushing.

Answer 11

Pressure

Question 12

is a device to measure pressures

Answer 12

Manometer

Question 13

It is the tendency of a body to float
or to rise when
submerged in a fluid testing an object’s buoyancy.

Answer 13

Buoyancy

Question 14

Formula of buoyancy

Answer 14

Fluid volume x density x acceleration due to gravity

Question 15

is a fluid’s resistance to flow.

Answer 15

The more viscous a fluid is, the harder it

Question 16

s
incompressible and it is an imaginary fluid that doesn’t exist in reality. Also, it

Answer 16

ideal
fluid

Question 17

A fluid which possesses at least some viscosity

Answer 17

real fluid.

Question 18

all the fluids existing or present in the environment are

Answer 18

real fluids.

Question 19

Some of its examples are petrol, air etc.

Answer 19

Real Fluid

Question 20

The fluid whose viscosity remains constant is known

Answer 20

Newtonian fluid.

Question 21

These fluids are independent of the amount of shear stress applied to them with respect to time.

Answer 21

Newtonian Fluid

Question 22

The relationship between the viscosity and shear stress of these fluids is linear.

Answer 22

Newtonian Fluid

Question 23

Some of its examples are water, air, alcohol, glycerol, thin motor oil etc.

Answer 23

Newtonian Fluid

Question 24

If the real fluid does not obey Newton’s law of viscosity

Answer 24

Non-Newtonian Fluid

Question 25

if the shear stress is not proportional to the shear strain or velocity gradient

Answer 25

Non-Newtonian fluid.

Question 26

Some of its examples honey, Soap solutions, cosmetics, and etc.

Answer 26

Non-Newtonian Fluid

Question 27

When the shear stress becomes proportional to the velocity gradient and more than the yield value,

Answer 27

Ideal Plastic Fluid

Question 28

When the density of the fluid remains invariant with the application of external force,

Answer 28

Incompressible Fluid

Question 29

When the density of the fluid varies with the application of external force,

Answer 29

Compressible Fluid