Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 5th Sem New 2153612 Basics Of Fluid Flow Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (NEW) EXAMINATION ? WINTER 2018
Subject Code:2153612 Date:11/12/2018
Subject Name:Basics of Fluid Flow
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Mention newton?s law of viscosity. Give the classification of fluids
based on Newton?s law of viscosity.
03
(b) Describe any four properties of fluids with their units. 04
(c) The surface area of a moving plate is 2 m
2
which is moving at a
velocity of 0.6 m/s. the distance between fixed plate and moving
plate is 0.2 mm. Viscosity of fluid is 0.1 Ns/m
2
. Determine the
shear stress, and power required to maintain velocity of plate.
07
Q.2 (a) Why water is not used as a manometric fluid in Manometers? 03
(b) Write a short note on various pressure measurement scales? 04
(c) Find the depth of oil of specific gravity of 0.82 which produces an
intensity of pressure equal to 2.5kN/m
2
. Also find the pressure head
in terms of water and mercury.
07
OR
(c) Discuss how a U-tube differential manometer can be used to
measure pressure difference in a pipe.
07
Q.3 (a) Explain (i) Laminar flow (ii) Turbulent flow (iii) Unsteady flow 03
(b) Briefly discuss formation of boundary layer in tubes mentioning
transition length.
04
(c) Water is flowing through a pipe of 7- mm diameter under a pressure
of 50 kPa and with a velocity of 3 m/sec. neglecting friction find
the total head if the pipe is 10 m above the datum line.
07
OR
Q.3 (a) Differentiate streamline and streamtube. 03
(b) Water is flowing through a pipe of inside diameter 50mm with a
volumetric flow rate of 0.00063m
3
/sec. Calculate mass flow rate
and mass velocity of water.
04
(c) Mention the various representational forms of Bernoulli?s equation
interpreting the physical significance of each of them.
07
Q.4 (a) Discuss static dynamic and total head with respect to pitot tube 03
(b) Derive the equation of discharge of flow through venturimeter. 04
(c) A fluid of density 900 kg/m
3
and viscosity 0.005 Ns/m
2
is flowing
through a pipe of 0.4m diameter and 900 m long. If the volumetric
flow rate of fluid is 0.33m
3
/s. Determine the head lost due to
friction and power required to pump the fluid
07
OR
Q.4 (a) Mention the various heads in a pump. 03
(b) Describe various hydraulic coefficients of orifice. Mention
relationship between them.
04
(c) Determine the head lost due to friction for the flow of water through
a pipe of 30 cm diameter and 60m long. The volumetric flow rate
of water is 0.15m
3
/sec?
07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (NEW) EXAMINATION ? WINTER 2018
Subject Code:2153612 Date:11/12/2018
Subject Name:Basics of Fluid Flow
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Mention newton?s law of viscosity. Give the classification of fluids
based on Newton?s law of viscosity.
03
(b) Describe any four properties of fluids with their units. 04
(c) The surface area of a moving plate is 2 m
2
which is moving at a
velocity of 0.6 m/s. the distance between fixed plate and moving
plate is 0.2 mm. Viscosity of fluid is 0.1 Ns/m
2
. Determine the
shear stress, and power required to maintain velocity of plate.
07
Q.2 (a) Why water is not used as a manometric fluid in Manometers? 03
(b) Write a short note on various pressure measurement scales? 04
(c) Find the depth of oil of specific gravity of 0.82 which produces an
intensity of pressure equal to 2.5kN/m
2
. Also find the pressure head
in terms of water and mercury.
07
OR
(c) Discuss how a U-tube differential manometer can be used to
measure pressure difference in a pipe.
07
Q.3 (a) Explain (i) Laminar flow (ii) Turbulent flow (iii) Unsteady flow 03
(b) Briefly discuss formation of boundary layer in tubes mentioning
transition length.
04
(c) Water is flowing through a pipe of 7- mm diameter under a pressure
of 50 kPa and with a velocity of 3 m/sec. neglecting friction find
the total head if the pipe is 10 m above the datum line.
07
OR
Q.3 (a) Differentiate streamline and streamtube. 03
(b) Water is flowing through a pipe of inside diameter 50mm with a
volumetric flow rate of 0.00063m
3
/sec. Calculate mass flow rate
and mass velocity of water.
04
(c) Mention the various representational forms of Bernoulli?s equation
interpreting the physical significance of each of them.
07
Q.4 (a) Discuss static dynamic and total head with respect to pitot tube 03
(b) Derive the equation of discharge of flow through venturimeter. 04
(c) A fluid of density 900 kg/m
3
and viscosity 0.005 Ns/m
2
is flowing
through a pipe of 0.4m diameter and 900 m long. If the volumetric
flow rate of fluid is 0.33m
3
/s. Determine the head lost due to
friction and power required to pump the fluid
07
OR
Q.4 (a) Mention the various heads in a pump. 03
(b) Describe various hydraulic coefficients of orifice. Mention
relationship between them.
04
(c) Determine the head lost due to friction for the flow of water through
a pipe of 30 cm diameter and 60m long. The volumetric flow rate
of water is 0.15m
3
/sec?
07
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2
Q.5 (a) Describe about flow pattern in agitated vessels 03
(b) A Flat blade turbine with six blades is installed centrally in a tank.
The tank is 1.83 m in diameter with turbine 0.61m and positioned
0.61m from the bottom of the tank. The turbine blades are 127mm
wide. The tank is filled up to a depth of 1.83 m with a solution of
50% caustic soda at 65.6 ?C having a viscosity of 12 cp having a
density of 1498 kg/m
3
. The turbine is operated at 90 rpm. The tank
is baffled. Estimate Reynolds number and power requirement to
operate the mixer?
(Take value of Power number = 6 for calculations
04
(c) Describe the various kinds of agitation equipments used in process
industries.
07
OR
Q.5 (a) Explain the correlation between form drag and streamlining 03
(b) A sand particle having an average diameter of 1mm has a specific
gravity of 2.1. Determine the terminal settling velocity and
Reynolds number of the particle settling in water at a temperature
of 20 ?C.
04
(c) What is fluidization? Derive an expression for minimum
fluidization velocity from first principles.
07
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This post was last modified on 20 February 2020