Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 2130502 Fluid Flow Operation Previous Question Paper
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 2130502 Date: 3/12/2019
Subject Name: Fluid Flow Operation
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 and explain Newton?s law of viscosity. 03
(b) Define:
(i) Fluids (ii) specific gravity (iii) Potential flow (iv) Fully developed
flow
04
(c) Discuss the concept of hydrostatic equilibrium and derive mathematical
condition of hydrostatic equilibrium.
07
Q.2 (a) Define drag and drag coefficient. 03
(b) Discuss the Rheological classification of fluids 04
(c) Starting with necessary, derive the Bernoulli?s equation. Also Explain
the corrections factors applied to it.
07
OR
Q.2 (c) Calculate the power to pump a liquid at the rate of 1.5 kg/s from a
ground level tank at atmospheric pressure through a 50mm ID steel pipe
to an overhead tank 3m above at 2 kg/cm
2
pressure. The distance
between the two tanks is 500m. Efficiency of the pump is 70%. The
density and viscosity of the liquid is 1500 kg/m
3
and 20 cp respectively.
Friction factor f =16/NRe.
07
Q.3 (a) Water of density 1 gm/cc and viscosity 1 cP is flowing in a pipe of
25mm ID at the rate of 100 kg/min. Calculate the Reynolds number and
find the type of flow.
03
(b) Show that average velocity is one ? half of the maximum velocity for
laminar flow of incompressible Newtonian fluid through a circular pipe.
04
(c) Derive Continuity Equation. 07
OR
Q.3 (a) What is boundary layer? Explain boundary layer separation. 03
(b) Derive Hagen-Poiseuille equation. 04
(c) Derive an expression for loss of head due to sudden expansion or
enlargement of flow area.
07
Q.4 (a) What is Mach number? Give its significance for the application of mach
number for compressible
03
(b) List any two types of valves with their industrial applications. 04
(c) Discuss principle, construction and working of Venturimeter and derive
its flow equation.
07
OR
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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 2130502 Date: 3/12/2019
Subject Name: Fluid Flow Operation
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 and explain Newton?s law of viscosity. 03
(b) Define:
(i) Fluids (ii) specific gravity (iii) Potential flow (iv) Fully developed
flow
04
(c) Discuss the concept of hydrostatic equilibrium and derive mathematical
condition of hydrostatic equilibrium.
07
Q.2 (a) Define drag and drag coefficient. 03
(b) Discuss the Rheological classification of fluids 04
(c) Starting with necessary, derive the Bernoulli?s equation. Also Explain
the corrections factors applied to it.
07
OR
Q.2 (c) Calculate the power to pump a liquid at the rate of 1.5 kg/s from a
ground level tank at atmospheric pressure through a 50mm ID steel pipe
to an overhead tank 3m above at 2 kg/cm
2
pressure. The distance
between the two tanks is 500m. Efficiency of the pump is 70%. The
density and viscosity of the liquid is 1500 kg/m
3
and 20 cp respectively.
Friction factor f =16/NRe.
07
Q.3 (a) Water of density 1 gm/cc and viscosity 1 cP is flowing in a pipe of
25mm ID at the rate of 100 kg/min. Calculate the Reynolds number and
find the type of flow.
03
(b) Show that average velocity is one ? half of the maximum velocity for
laminar flow of incompressible Newtonian fluid through a circular pipe.
04
(c) Derive Continuity Equation. 07
OR
Q.3 (a) What is boundary layer? Explain boundary layer separation. 03
(b) Derive Hagen-Poiseuille equation. 04
(c) Derive an expression for loss of head due to sudden expansion or
enlargement of flow area.
07
Q.4 (a) What is Mach number? Give its significance for the application of mach
number for compressible
03
(b) List any two types of valves with their industrial applications. 04
(c) Discuss principle, construction and working of Venturimeter and derive
its flow equation.
07
OR
Q.4 (a) What is principle of working of a convergent-divergent nozzle? 03
(b) List different fittings used to prevent leakage around moving parts. 04
(c) Sulfuric acid of density 1300 kg/m
3
is flowing through a pipe of 50mm
ID. An orificemeter of 10mm diameter is fitted in the pipe. A mercury
(sp. gr 13.6) manometer fitted to the system measures the differential
pressure as 10cm. Calculate the mass flow rate of the acid in kg/hr.
Assume orifice coefficient as 0.61.
07
Q.5 (a) What is minimum fluidization velocity? 03
(b) Discuss types of fluidization with example. 04
(c) Discuss the working of centrifugal pump and different types of impellers
used in a centrifugal pump.
07
OR
Q.5 (a) Define cavitation and priming. 03
(b) Write a short note on blowers and compressors. 04
(c) For the flow of fluid through long straight and circular pipe, the pressure
drop due to friction depends upon the following variables,
Diameter of pipe (D), length of pipe (L), velocity of fluid (u), density of
fluid ( ?), viscosity of fluid ( ?), and frictional head loss (K). Obtain the
relationship between pressure drop and the variables.
Use Buckingham?s ? method of dimensional analysis.
07
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This post was last modified on 20 February 2020