Download SGBAU B-Tech 4th Sem Chemical Engineering Fluid Operations Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 4th Sem Chemical Engineering Fluid Operations Previous Question Paper

B.Tech. Fourth Semester(Chemica1 Engineering) (CGS)
10991 : F luid F low Operations : 4 CH 01 / 4 CT 05
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mmmmmwl "J Max. Marks : 80
066
P.Pages: 3
Time : Three Hours
Notes : 1 Answer Three question From Section "A" and Three question from Section "B"
2. Assume suitable data wherever necessary.
3. Illustrate your answer necessary with the help of neat sketches.
4. Use of slide rule logarithmic tables, Stem tables, Moller's Chart, Drawing
instrument, Thermodynamic table for moist air, Psychrometric Charts and
Refrigeration charts is permitted.
SECTION - A
l. a) What is Pascal's Law? Obtain an expression for it. 7
b) What are the pressure measuring devices? Explain the working ofU tube manometer with 7
neat diagram.
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2. a) De?ne the term ?uid and explain propenies 01? the ?uid. 8
b) A differential manometer is connected at the two points A & B of two pipes. Pipe A contains 6
carbon tetrachloride having sp. gr. 1.594 under a pressure of 11.772 N/cm2 and pipe B
contains oil of 0.8 sp. gr. under a pressure of 1 1.772 N/cmz. The pipe A lies 2.5 m above
pipe B. Find the di??crcnce of pressure measured by mercury as ?uid ?lling U tube.
3. a) De?ne the terms. . 6
i) Velocity potential function
ii) Stream function.
b) De?ne vortex ?ow and obtain an expression for equation of forced vortex ?ow. 7
OR
4. a) A stream function is given by ?1? = 2x ? 5y. Calculate the velocity components and also' 5
magnitude and direction of the resultant velocity at any point.
b) Discuss Laminar ?ow and Turbulent ?ow. 4
c) Explain the following 4
i) Reynold's Number
ii) Euler's Number.
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10.
a)
b)
a?)
b)
a)
b)
b)
19)
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State the Bernoulli's theorem. Dcriw an expression for Bernoulli?s equation and state the
assumptions.
Crude oil of density 840 kgr?m? is pumped at a rate of 3 lit/sec through 600 m of steel pipe
under a pressure drop of 500 kPa. Calculate the fanning factor if the pipe diameter is 52
mm. Use Hagen Poiscuilie equation.
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An oil of sp.gr. 0.0 and viscosity 0.06 poise is ?owing through a Pipe ofdiameter 200 mm
at the rate 0f 60 Lit/sec ?nd the head loss due to friction for a 500 m. Length of pipe. Find
the power required to maintain this ?ow.
Obtain an expression for loss ofHead due to sudden Enlargement.
SECTION - B
Explain with neat sketch the construction and working of Vcnturi-meter.
What is meant by pitot tube? Explain its working and application With neat sketch.
OR
What is rotamcter?? Give an ex pression for ?ow rate through rotameter.
An ori?cc meter with ori?ce diameter 20 cm is used to measure the ?ow rate of water in a
pipe 0140 cm diameter. The pressure gauges ?tted upstream and down stream of the ori?ce
meter indicate reading.? of 30x104 N/mz & 20x10? N/mz. Coef?cient of discharge for the
meter is 0.60. Determine the discharge of water through pipe.
Describe the working of reciprocating pump and obtain an expression for the work done by
pump m?th neat sketch.
A centn'fugal pump delivers water through a pipe of 30 cm. Diameter and 50 m. Long pipe.
The ?ow rate of water is 0.3 mE/s. The fractional losses in the suction head is 0.8 m. The
fractional losses in the pipe ?ttings is I .9 m. Detemiine work done per second by the pump.
The ef?ciency of pump is 55%.
OR
A centrifugal pump delivers water. the speed of the pump is 1000 rpm The velocity of ?ow
at outlet is 3 m/s. The outlet vane angle is 30? Net head of the Pump is 30 m, Power supplied
to drive the Pump is 90 kW. The width 01? impeller :11 outlet 5 cm. The outlet diameter of
impeller is 40 cm. Determine
1) Volumetric ?ow rate 01' water
2) Work done by impeller per sec.
3) Overall ef?ciency ofthe pump.
Discuss the followi ng
i) Priming of a centrifugal pump.
ii) Cavitation.
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ll.
12.
a)
b)
a)
b)
Derive an expression for the minimum ?uidization velocity for turbulent ?ow of ?uid in
fluidized column.
A ?uid passes vertically upwards through a bed of catalyst consisting of spherical particles
ofdiameter 0.3 mm & density 2600 kg/m3. The density of ?uid is 900 ngm3 & viscosity of
?uid is 9 mN-S/mz. The fractional voidage of ?uidized bed at minimum ?uidization is 0.50
& length of ?uidized bed is 1.8 m.
Determine :
1) Min ?uidization velocity
2) Entrainment velocity.
3) Pressure drop across ?uidized columu.
OR
A packed column of 0.5 m diameter & 4 m length packed with 30 mm ceramic Rasching
rings is used in the gas absorption process carried out at atmospheric pressure at 293 K. The
liquid and gas have the properties of water and air. The ?ow rate of liquid is 5 kg/m2.S and
the ?ow rate of gas is 0.5 kg/m2.S
Detemline the pressure drop across the packed column.
speci?c surface area of packing material is 650 m?'.
Voidage of packed colunm 0.60
Viscosity ofair = 0.018 mN-S/mz.
Discuss the loading and ?ooding in the packed column with neat diagram.
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