## Download Previous Year Diploma Paper of Fluid Mechanics 3rd Sem/Civil/Dec 2016 Paper

## Fluid Mechanics 3rd Sem/Civil/Dec 2016 Diploma Question Paper

** SECTION-A**

### a) Fill in the blanks 1×10=10

#### 1) When the fluid is at rest shear stress is _____________

2) Density of water is __________ at 4ºC.

3) According to _________ the pressure at a point in a fluid at rest is same in all directions.

4) Intensity of pressure at the bottom of a tank filled with fluid having specific weight ‘w’ upto a height of ‘h’ will be ___________.

5) Atmosphere pressure at sea level is ____ mm of mercury.

6) Piezometer measures ____________ pressure only.

7) Laminar flow is also called ________ flow.

8) The pipe running partially full behaves like __________ .

9) Pumps convert mechanical energy into _______________ .

10) Water in canals runs under pressure.

#### (b) True/ False statements 1×5=5

#### 11) Gases possess definite volume.

12) Unit of Kinematic viscosity is Stoke.

13) U-Tube can be used to measure vaccum pressure.

14) Hydraulic jump occurs on upstream side of dam.

15) Centre of pressure acts as centre of gravity for immersed surface.

## ** SECTION-B**

**Q2. Attempt any five questions. 5×6=30**

####

1) Define “Fluid” and briefly describe its types along with examples.

2) Explain the fluid property ‘Capillarity’.

3) Differentiate between gauge pressure and vaccum pressure.

4) Define Bernaulli’s theorem and write down its assumptions.

5) Write down the difference between Orifice and Notch.

6) What do you understand by most economical channel section? Write down conditions for rectangular channel section to be most economical.

7) Define priming of a centrifugal pump and write down its importance.

8) Define Venturimeter. Briefly describe its parts and give formula to be used with venturimeter.

9) Write down the advantages and disadvantages of Manometers.

10) Write down the relationship between different types of pressures.

** SECTION-C**

**Q3. Attempt any three questions.**** 3×10=30**

####

i) Calculate the specific weight, mass density, specific volume, relative density of 1.5 litres of a liquid which weighs 5.5 N.

ii) A rectangular plate 4m long and 2m wide is immersed vertically in water in such a way that its 4m side is parallel to water surface. Find total Pressure and centre of pressure on plate when: (1) Its top surface is coinciding with free surface and (2) Its top surface is 1.5m below the free surface.

iii) The right limb of simple U-Tube manometer containing mercury is open to atmosphere while the left limb is connected to a pipe in which a fluid of specific gravity 0.85 is flowing. The centre of pipe is 15 cm below the level of mercury in the right limb. Find the pressure of fluid in pipe if difference of mercury level in two limbs is 25 cm.

iv) The rate of flow through pipe A-B is 500 litres per second. The diameter at end A is 20 cm and velocity at end B is 3 m/s. Determine the velocity at end A and Diameter of pipe at end B.

v) What is a reciprocating pump? Write down in detail about the main parts and working of single acting reciprocating pump along with neat sketch.

vi) Define head loss through pipe, explain its different types along with neat sketches for different pipe L-sections of pipes.

## Fluid Mechanics 3rd Sem/Civil/Dec 2016 Diploma Solved Question Paper

** SECTION-A**

### a) Fill in the blanks 1×10=10

#### 1) When the fluid is at rest shear stress is _____________

2) Density of water is __________ at 4ºC.

3) According to _________ the pressure at a point in a fluid at rest is same in all directions.

4) Intensity of pressure at the bottom of a tank filled with fluid having specific weight ‘w’ upto a height of ‘h’ will be ___________.

5) Atmosphere pressure at sea level is ____ mm of mercury.

6) Piezometer measures ____________ pressure only.

7) Laminar flow is also called ________ flow.

8) The pipe running partially full behaves like __________ .

9) Pumps convert mechanical energy into _______________ .

10) Water in canals runs under pressure.

#### (b) True/ False statements 1×5=5

#### 11) Gases possess definite volume.

12) Unit of Kinematic viscosity is Stoke.

13) U-Tube can be used to measure vaccum pressure.

14) Hydraulic jump occurs on upstream side of dam.

15) Centre of pressure acts as centre of gravity for immersed surface.

#### Centre of pressure acts as centre of gravity for immersed surface.

##### Fluid Mechanics 3rd Sem/Civil/Dec 2016 Diploma Solved Question Paper Click Here

“Fluid” and briefly describe its types along with examples.

Fluid property ‘Capillarity’.

What is the Differentiate between gauge pressure and vaccum pressure.

Bernaulli’s theorem and write down its assumptions.

Difference between Orifice and Notch.

Most economical channel section

Conditions for rectangular channel section to be most economical.

Priming of a centrifugal pump its importance.

Venturimeter

Describe its parts and give formula to be used with venturimeter.

Advantages and disadvantages of Manometers.

Relationship between different types of pressures.

##### Fluid Mechanics 3rd Sem/Civil/Dec 2016 Diploma Solved Paper Click Here

#### Find Specific weight, mass density, specific volume, relative density Numerical

#### Rectangular plate Numerical

#### The right limb of simple U-Tube manometer Numerical

#### Pipes Related Problem

#### Reciprocating pump

#### Main parts and working of single acting reciprocating pump

#### Head loss through pipe

#### Explain its different types along with neat sketches

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