Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 4th Sem 3140110 Fluid Mechanics Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?IV (NEW) EXAMINATION ? WINTER 2020
Subject Code: 3140110 Date: 09/02/2021
Subject Name: Fluid Mechanics
Time: 02:30 PM TO 04:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Marks
Q.1
(a) Define: Specific Gravity, Density, Specific Volume.
03
(b) Define the following:
04
Newtonian & Non-Newtonian Fluid
Compressibility & bulk Modulus
(c) Classify different types of Manometer. Make use of Pascal's law
07
to explain working of U-tube manometer.
Q.2
(a) Define: Total Pressure, Centre of Pressure and buoyancy.
03
(b) Define Surface Tension. Show its relationship with pressure for
04
liquid droplet.
(c) Identify the conditions for stability of floating body.
07
Q.3
(a) Define Metacenter, Metacentric height.
03
(b) A cylindrical block weighs 22kN having diameter of 2m and
04
height 2.5m is to float in sea water having specific gravity 1.025.
Show that it does not float vertically.
(c) Classify different types of fluid flow.
07
Q.4
(a) Compare Eulerian and Lagrangian frame of reference.
03
(b) Differentiate Ideal and Real Fluids.
04
(c) Derive Continuity equation for 2-D & 3-D flow in Cartesian
07
coordinate system.
Q.5
(a) Explain terms Circulation and Vorticity.
03
(b) Evaluate an expression for Discharge over a Triangular notch.
04
(c) Explain Velocity potential and Potential flow.
07
Q.6
(a) Explain Bernoulli's equation for real fluid.
03
(b) Explain working of Pitot Tube.
04
(c) Explain Buckingham's theorem in detail.
07
Q.7
(a) What is Reynold's Number? Explain its physical significance.
03
(b) Derive an expression for power absorbed in Journal earing.
04
(c) Derive an expressions shear stress and velocity for HAGEN-
07
POISEVILLE LAW.
1
Q.8
(a) Define Laminar Sub layer.
03
(b) Explain Laminar and Turbulent boundary layer.
04
(c) A pipe of diameter 20 cm and length 2000 m connects two
07
reservoirs having difference of water levels as 20 m. Determine
the discharge through pipe. If an additional pipe of diameter 20
cm and length 1200 m is attached to the 1200 m length of the
existing pipe, find the increase in the discharge. Take f= 0.015
and neglect minor losses.
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This post was last modified on 04 March 2021