Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 3133608 Basics Of Fluid Flow Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3133608 Date: 3/12/2019
Subject Name: Basics of Fluid Flow
Time: 02:30 PM TO 05:00 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) State Netwon?s law of Viscosity? Mention classification
of fluids based on Newton?s law of viscosity.
03
(b) With suitable diagrams correlate gauge pressure,
atmospheric pressure and vacuum pressure
04
(c)
Discuss the case of boundary layer separation for the case of
fluid flowing over a flat plate
07
Q.2 (a) Differentiate between laminar flow and turbulent flow. 03
(b) Water is flowing in a pipe of 25mm ID at the rate of 1000
kg/min. Calculate the Reynolds number and find the type
of flow.
04
(c)
Derive a relationship to measure the pressure drop between
two points in case of fluid flowing through a pipeline.
07
OR
(c)
A simple U-tube manometer is installed across an orifice
meter. The manometric fluid is mercury (having sp.gr.13.6)
and flowing fluid through piping is carbon tetrachloride
(sp.gr.1.6). The manometer reads 200 mm. What is the
pressure difference over a manometer in N/m
2
07
Q.3 (a) Discuss differences between skin friction and form
friction?
03
(b) Convert pressure head of mercury into equivalent
pressure head of water
04
(c) With a neat sketch explain the main parts, design aspects
and working principle of Venturimeter? Derive the
equation of discharge for Venturimeter.
07
OR
Q.3 (a) Mention the relationship between skin friction and wall
shear.
03
(b) Determine the vacuum pressure in meter of water if the
absolute pressure is 0.622001 bar. Assume the
atmospheric pressure as 10.33 meter of water.
04
(c) An orifice meter consisting of 100mm diameter orifice in
a 250mm diameter pipe has a Cd = 0.65. The pipe delivers
oil of specific gravity 0.8. The pressure difference on two
sides of the orifice plate is measured by a mercury oil
differential manometer. If the differential gauge reading
is 800 mm of mercury, find the rate of flow in liters/sec.
07
Q.4 (a) List various types of valves and mention their specific
application in chemical industry.
03
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3133608 Date: 3/12/2019
Subject Name: Basics of Fluid Flow
Time: 02:30 PM TO 05:00 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) State Netwon?s law of Viscosity? Mention classification
of fluids based on Newton?s law of viscosity.
03
(b) With suitable diagrams correlate gauge pressure,
atmospheric pressure and vacuum pressure
04
(c)
Discuss the case of boundary layer separation for the case of
fluid flowing over a flat plate
07
Q.2 (a) Differentiate between laminar flow and turbulent flow. 03
(b) Water is flowing in a pipe of 25mm ID at the rate of 1000
kg/min. Calculate the Reynolds number and find the type
of flow.
04
(c)
Derive a relationship to measure the pressure drop between
two points in case of fluid flowing through a pipeline.
07
OR
(c)
A simple U-tube manometer is installed across an orifice
meter. The manometric fluid is mercury (having sp.gr.13.6)
and flowing fluid through piping is carbon tetrachloride
(sp.gr.1.6). The manometer reads 200 mm. What is the
pressure difference over a manometer in N/m
2
07
Q.3 (a) Discuss differences between skin friction and form
friction?
03
(b) Convert pressure head of mercury into equivalent
pressure head of water
04
(c) With a neat sketch explain the main parts, design aspects
and working principle of Venturimeter? Derive the
equation of discharge for Venturimeter.
07
OR
Q.3 (a) Mention the relationship between skin friction and wall
shear.
03
(b) Determine the vacuum pressure in meter of water if the
absolute pressure is 0.622001 bar. Assume the
atmospheric pressure as 10.33 meter of water.
04
(c) An orifice meter consisting of 100mm diameter orifice in
a 250mm diameter pipe has a Cd = 0.65. The pipe delivers
oil of specific gravity 0.8. The pressure difference on two
sides of the orifice plate is measured by a mercury oil
differential manometer. If the differential gauge reading
is 800 mm of mercury, find the rate of flow in liters/sec.
07
Q.4 (a) List various types of valves and mention their specific
application in chemical industry.
03
2
(b) Explain what is cavitation and when priming is required
in centrifugal pump?
04
(c) What is Fluidization? Derive an expression for minimum
fluidization velocity from first principles?
07
OR
Q.4 (a) What is static head, dynamic head and total head?
Mention the relationship between them.
03
(b) With a neat diagram mention various types of heads in a
pump.
04
(c) A circular disc of 2m in diameter is held against a wind
stream at a velocity of 30m/s and having a density of 1.2
kg/m
3
. Calculate the drag force exerted by wind on the
disc. Assume the drag coefficient of disc is 1.2
07
Q.5 (a) What is meant by Streamline? How it is different from a
streamtube?
03
(b) Explain the concept of flow in non-circular cross
sections
04
(c) Derive the expression to estimate the pressure drop for
the flow of fluid for a specific length of pipe.
07
OR
Q.5 (a) Explain the concept of momentum correction factor. 03
(b) What is understood by Hydraulically smooth condition? 04
(c) Describe the case of various kind of skin and frictional
losses for the flow of fluid in a pipe.
07
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This post was last modified on 20 February 2020