Download GTU BE/B.Tech 2019 Summer 5th Sem New 2153507 Elements Of Fluid Flow Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 5th Sem New 2153507 Elements Of Fluid Flow Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?V (NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2153507 Date: 20/06/2019

Subject Name: Elements 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.


*************

Q.1 (a) Define Froude number and explain different flows based on this number. 03
(b) Derive an expression for pressure-density-height relationship. 04
(c) Explain in detail the nature of turbulence. 07

Q.2 (a) Write the range of Reynolds number for laminar, transition and turbulent
flow.
03
(b) Write a note on boundary layer. 04
(c) Explain Rayleigh method with an example for dimensional analysis. 07
OR
(c) Explain Buckingham Pi theorem with an example for dimensional
analysis.
07
Q.3 (a) What is dimensional analysis? 03
(b) Determine Reynolds number and type of flow for polymer melt with a
density of 900 kg/m
3
and viscosity of 1Pa-s flowing at 0.2 m/s in a 20
mm tube
04
(c) Derive Reynold?s Analogy. 07
OR
Q.3 (a) What are weirs? State the different types of weirs. 03
(b) What are sonic, subsonic and supersonic flows? At which dimensionless
number they are dependent explain in detail.
04
(c) Explain Newtonian and Non-Newtonian fluids with their corresponding
stress strain curves and examples.
07
Q.4 (a) Find the kinematic viscosity of an oil having density 981 kg/m
3
. The
shear stress at a point in oil is 0.2452 N/m
2
and velocity gradient at that
point is 0.2 per second.
03
(b) What are pressure transducers? 04
(c) Explain at least five different types of flows. 07
OR
Q.4 (a) What is Newton?s law of viscosity? 03
(b) Explain similarity laws in brief. 04
(c) Derive equation of motion. 07
Q.5 (a) Classify various flow meters. 03
(b) Write difference between venturi meter and orifice meter. 04
(c) A ?U?-tube manometer containing mercury of density 13600 kg/m
3
is
used to measure the pressure drop along a horizontal pipe. If the fluid in
the pipe has a specific gravity of 0.8 and the manometer reading is 0.6m,
what is the pressure difference measured by the manometer?
07
OR
Q.5 (a) What is Rheology? 03
(b) Explain in detail about Magnus effect 04
(c) Explain principle and working of Rotameter with diagram. 07
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