## Download Previous Year Diploma Paper of Fluid Mechanics 3rd Sem/Civil/Dec 2017 Paper

## Fluid Mechanics 3rd Sem/Civil/Dec 2017 Diploma Solved Question Paper

** SECTION-A**

**Q1. a) Fill in the Blanks. 15×1=15**

#### i. Ideal fluids are also known as ___________ .

ii. Specific gravity of water is _____________ .

iii. According to ________ the pressure at a point in a fluid at rest is same in all directions

iv. Piezometer measures _____________ pressure only.

v. Atmosphere pressure at sea level is ________ mm of mercury.

vi. Venturimeter is used to measure ________ of flow.

vii. Laminar flow is also called __________flow.

viii. The pipe running partially full behaves like _____________ .

ix. Pumps convert mechanical energy into ________________ .

x. In pipe flow maximum velocity occurs at the _________of pipe section.

b) State True or False.

xi. All liquids and gases are known as fluids.

xii. Water is more viscous than glycerine.

xiii. Continuous discharge is obtained through reciprocating pump than centrifugal pump.

xiv. Hydraulic jump occurs on upstream side of dam.

xv. Water flows through pipeline under pressure.

## ** SECTION-B**

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

#### a. Define Capillarity and surface tension.

b. Differentiate between gauge pressure and vacuum pressure.

c. Define Bernoulli’s theorem and write down its assumptions.

d. Write down the difference between Orifice and Notch.

e. What do you understand by most economical channel section? Write down conditions for Trapezoidal channel section to be most economical.

f. Differentiate between Laminar and Turbulent flow.

g. Write down the difference between manometers and pressure gauges.

h. Differentiate between pipe flow and open channel flow.

** SECTION-C**

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

#### i. Calculate the specific weight, mass density, specific volume, relative density of 5 litres of a liquid which weighs 25 N.

ii. A rectangular plate 6 metres long and 2 metres wide are immersed vertically in water in such a way that its 6 m side is parallel to water surface. Find total pressure and centre of pressure on plate if it’s top surface is 1 m below the free surface of water.

iii. Explain pipe in series, an equivalent pipe and pipes in parallel combination. Write down the relationships for discharge and head loss.

iv. The diameters of a pipe at sections 1-1 and 2-2 are 300 mm and 500 mm respectively. If the velocity of water flowing through pipe at section 1-1 is 5 m/s, find: Discharge through pipe, and velocity of water at section 2-2.

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.

## Fluid Mechanics 3rd Sem/Civil/Dec 2017 Diploma Question Paper

** SECTION-A**

**Q1. a) Fill in the Blanks. 15×1=15**

#### i. Ideal fluids are also known as ___________ .

ii. Specific gravity of water is _____________ .

iii. According to ________ the pressure at a point in a fluid at rest is same in all directions

iv. Piezometer measures _____________ pressure only.

v. Atmosphere pressure at sea level is ________ mm of mercury.

vi. Venturimeter is used to measure ________ of flow.

vii. Laminar flow is also called __________flow.

viii. The pipe running partially full behaves like _____________ .

ix. Pumps convert mechanical energy into ________________ .

x. In pipe flow maximum velocity occurs at the _________of pipe section.

b) State True or False.

xi. All liquids and gases are known as fluids.

xii. Water is more viscous than glycerine.

xiii. Continuous discharge is obtained through reciprocating pump than centrifugal pump.

xiv. Hydraulic jump occurs on upstream side of dam.

xv. Water flows through pipeline under pressure.

Capillarity and surface tension.

Differentiate between gauge pressure and vacuum pressure.

Bernoulli’s theorem and write down its assumptions.

Difference between Orifice and Notch.

Most economical channel section

Conditions for Trapezoidal channel section to be most economical.

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What is Differentiate between Laminar and Turbulent flow.

Difference between manometers and pressure gauges.

Comparison between pipe flow and open channel flow.

What is the Differentiate between Laminar and Turbulent flow.

Difference between manometers and pressure gauges.

Differentiate between pipe flow and open channel flow.