outcome 2

Question 1

Fluid flow can broadly be classified as

Answer 1

1) Steady and Unsteady flow
2) Uniform and Non-uniform flow
3) Laminar and Turbulent flow
4) Compressible and incompressible flow

Question 2

Physical properties such as velocity, pressure or density at any point do not change with time.

Answer 2

Steady Flow

Question 3

Physical properties such as velocity, pressure or density at any point changes with time.

Answer 3

Unsteady Flow

Question 4

flow at any given time does not change its magnitude & direction with respect to space.

Answer 4

Uniform Flow

Question 5

Velocity of a fluid flow changes from point to point at any instant.

Answer 5

Non-uniform Flow

Question 6

Fluid particles move along a smooth path with one layer sliding smoothly over an adjacent layer

Answer 6

Laminar Flow

Question 7

Velocity of flow is small or Viscosity is high in laminar flow ( T or F )

Answer 7

T

Question 8

The fluid particles move in a zig-zag way

Answer 8

Turbulent Flow

Question 9

Random fluctuations is called

Answer 9

Turbulenc

Question 10

Time average velocity of turbulent flow is called

Answer 10

temporal mean velocity.

Question 11

Reynolds Number (Re) =

Answer 11

Re = 𝜌𝑉𝐷/𝜇

Question 12

Reynolds number is less than 2000, the flow is

Answer 12

Laminar flow

Question 13

Reynolds number is between 2000 and 4000, the flow is

Answer 13

Transitional flow.

Question 14

Reynolds number is greater than 4000, the flow is

Answer 14

Turbulent flow

Question 15

The density of the fluid in a flow is not constant and varies from point to point.

Answer 15

Compressible Flow

Question 16

The density is constant for the fluid flow

Answer 16

Incompressible Flow

Question 17

Liquids are generally

Answer 17

Incompressible

Question 18

Gases are

Answer 18

compressible

Question 19

This equation is based on the principle of conservation of mass is called as

Answer 19

CONTINUITY EQUATION

Question 20

A 30 cm diameter pipe, conveying water, branches into two pipes of diameters 20 cm and 15 cm respectively. If the average velocity in the 30 cm diameter pipe is 2.5 m/s, find the discharge in this pipe. Also, determine the velocity in 15 cm pipe, if the average velocity in 20 cm pipe is 2 m/s.

Question 21

3. A branched pipe in which water is flowing as shown in figure has 4 pipes. Pipe 1 has the diameter of 55 cm and discharge of 9m3/sec. Pipe 1 is divided in to pipe 2, pipe 3 and pipe 4. Pipe 2 has the diameter 25cm with a velocity of 4.9m/s, pipe 3 has the diameter of 18 cm and discharge of 2.9m3/sec& pipe 4 has the diameter of 12cm. Find (i) the velocity in pipe 1, (ii) discharge in pipe 2 (iii) discharge in pipe 4

Question 22

Assumptions for Bernoulli’s equation for ideal fluid can be listed as:

Answer 22

Flow is steady
Flow is incompressible
Flow is frictionless or inviscid.
Flow is steady.
Flow is irrotational.

Question 23

Applying equation over two section 1 and 2, For IDEAL FLUID

Question 24

Applying equation over two section 1 and 2, For REAL FLUID

Question 25

A pipe of diameter 400 mm carries water at a velocity of 25 m/s. The pressures at the points A and B are given as 29.43 N/cm2 and 22.563 N/cm2 respectively while the datum head at A and B are 28m and 30 m. Find the loss of head between A and B. Sketch the arrangement

Question 26

A pipeline carrying oil of specific gravity 0.87, changes in diameter from 200 mm diameter at a position A to 500 mm diameter at a position B which is 4 metres at a higher level. If the pressures at A and B are 9.81 N/cm2 and 5.886 N/cm2 respectively and the discharge is 200 litres/s determine the loss of head and direction of flow. Sketch the arrangement