III B.Tech I Semester Supplementary Examinations,June 2010 MECHANICAL UNIT OPERATIONS Chemical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Write about the construction of monolithic multichannel element of a membrane filter. [8]
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(b) Explain the performance of a ultrafiltration membrane in terms of permeate flux. [8] 2. (a) Explain the phenomena of crystallization from melts.
(b) Describe Brodic purifier counter current cooling crystallizer.
[8]
[4]
or
3. (a) What is Kick’s law? State its range of application.
[8]
(b) A rock feed having an average particle diameter of 0.025 m is fed to a crusher at the rate of 20 tonnes /hour. The average diameter of product is found to be 0.018 m. At the above condition the mill takes 6.7 kW of power and 0.34 kW power when it is empty.
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i. Calculate power consumption of the mill if the average particle diameter of product is 0.008m. ii. How much power would be required under condition A. by Kick’s law?
iii. Which of the above results is more accurate?
[12]
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4. (a) Show by dimensional analysis that the power required by mixer impeller can be correlated by means of power number as a function of Reynolds number and Froude number [10] (b) Explain the physical significance of each number in the above correlation. [6]
5. (a) Explain how cohesive solids flow out of bins.
[6]
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(b) The discharge opening for flow of solids out of bins plays an important role in maintaining a proper control of the flow rate. Explain. [5] (c) What causes the solids to arch or bridge in the container and prevent flow? How is it overcome? [5]
6. Discuss about mixers for cohesive solids.
[16]
7. Derive the relationship used to calculate the pressure drop through filter cake with the help of pressure gradient diagram. Mention the assumptions. [16] 8. (a) Describe the different stages of the hatch sedimentation process.
1
[8]
Code No.NR-RR-310801
NR-RR
Set No. 2
(b) Write about of rate of sedimentation and explain the relation between the interface height and settling time. [8]
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or
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in
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2
Code No.NR-RR-310801
NR-RR
Set No. 4
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III B.Tech I Semester Supplementary Examinations,June 2010 MECHANICAL UNIT OPERATIONS Chemical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
ld .
1. (a) Show by dimensional analysis that the power required by mixer impeller can be correlated by means of power number as a function of Reynolds number and Froude number [10] (b) Explain the physical significance of each number in the above correlation. [6]
2. Derive the relationship used to calculate the pressure drop through filter cake with the help of pressure gradient diagram. Mention the assumptions. [16]
or
3. (a) Write about the construction of monolithic multichannel element of a membrane filter. [8] (b) Explain the performance of a ultrafiltration membrane in terms of permeate flux. [8] 4. (a) Explain the phenomena of crystallization from melts.
uW
(b) Describe Brodic purifier counter current cooling crystallizer. 5. (a) What is Kick’s law? State its range of application.
[8] [8] [4]
(b) A rock feed having an average particle diameter of 0.025 m is fed to a crusher at the rate of 20 tonnes /hour. The average diameter of product is found to be 0.018 m. At the above condition the mill takes 6.7 kW of power and 0.34 kW power when it is empty.
nt
i. Calculate power consumption of the mill if the average particle diameter of product is 0.008m. ii. How much power would be required under condition A. by Kick’s law?
Aj
iii. Which of the above results is more accurate?
6. (a) Explain how cohesive solids flow out of bins.
[12] [6]
(b) The discharge opening for flow of solids out of bins plays an important role in maintaining a proper control of the flow rate. Explain. [5] (c) What causes the solids to arch or bridge in the container and prevent flow? How is it overcome? [5]
7. (a) Describe the different stages of the hatch sedimentation process.
[8]
(b) Write about of rate of sedimentation and explain the relation between the interface height and settling time. [8] 3
Code No.NR-RR-310801
NR-RR
Set No. 4
8. Discuss about mixers for cohesive solids.
[16]
Aj
nt
uW
or
ld .
in
?????
4
Code No.NR-RR-310801
Set No. 1
NR-RR
in
III B.Tech I Semester Supplementary Examinations,June 2010 MECHANICAL UNIT OPERATIONS Chemical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Write about the construction of monolithic multichannel element of a membrane filter. [8]
2. (a) Explain how cohesive solids flow out of bins.
ld .
(b) Explain the performance of a ultrafiltration membrane in terms of permeate flux. [8] [6]
(b) The discharge opening for flow of solids out of bins plays an important role in maintaining a proper control of the flow rate. Explain. [5]
or
(c) What causes the solids to arch or bridge in the container and prevent flow? How is it overcome? [5] 3. Discuss about mixers for cohesive solids.
[16]
uW
4. (a) Show by dimensional analysis that the power required by mixer impeller can be correlated by means of power number as a function of Reynolds number and Froude number [10] (b) Explain the physical significance of each number in the above correlation. [6] 5. (a) What is Kick’s law? State its range of application.
[4]
nt
(b) A rock feed having an average particle diameter of 0.025 m is fed to a crusher at the rate of 20 tonnes /hour. The average diameter of product is found to be 0.018 m. At the above condition the mill takes 6.7 kW of power and 0.34 kW power when it is empty.
Aj
i. Calculate power consumption of the mill if the average particle diameter of product is 0.008m. ii. How much power would be required under condition A. by Kick’s law?
iii. Which of the above results is more accurate?
6. (a) Explain the phenomena of crystallization from melts.
[12] [8]
(b) Describe Brodic purifier counter current cooling crystallizer.
[8]
7. (a) Describe the different stages of the hatch sedimentation process.
[8]
(b) Write about of rate of sedimentation and explain the relation between the interface height and settling time. [8]
5
Code No.NR-RR-310801
NR-RR
Set No. 1
8. Derive the relationship used to calculate the pressure drop through filter cake with the help of pressure gradient diagram. Mention the assumptions. [16]
Aj
nt
uW
or
ld .
in
?????
6
Code No.NR-RR-310801
Set No. 3
NR-RR
in
III B.Tech I Semester Supplementary Examinations,June 2010 MECHANICAL UNIT OPERATIONS Chemical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Write about the construction of monolithic multichannel element of a membrane filter. [8]
ld .
(b) Explain the performance of a ultrafiltration membrane in terms of permeate flux. [8] 2. (a) Describe the different stages of the hatch sedimentation process.
[8]
(b) Write about of rate of sedimentation and explain the relation between the interface height and settling time. [8]
or
3. (a) Explain how cohesive solids flow out of bins.
[6]
(b) The discharge opening for flow of solids out of bins plays an important role in maintaining a proper control of the flow rate. Explain. [5]
uW
(c) What causes the solids to arch or bridge in the container and prevent flow? How is it overcome? [5] 4. (a) Show by dimensional analysis that the power required by mixer impeller can be correlated by means of power number as a function of Reynolds number and Froude number [10] (b) Explain the physical significance of each number in the above correlation. [6]
nt
5. Derive the relationship used to calculate the pressure drop through filter cake with the help of pressure gradient diagram. Mention the assumptions. [16] 6. (a) What is Kick’s law? State its range of application.
[4]
Aj
(b) A rock feed having an average particle diameter of 0.025 m is fed to a crusher at the rate of 20 tonnes /hour. The average diameter of product is found to be 0.018 m. At the above condition the mill takes 6.7 kW of power and 0.34 kW power when it is empty. i. Calculate power consumption of the mill if the average particle diameter of product is 0.008m. ii. How much power would be required under condition A. by Kick’s law? iii. Which of the above results is more accurate? [12]
7. Discuss about mixers for cohesive solids. 8. (a) Explain the phenomena of crystallization from melts. 7
[16] [8]
NR-RR
Code No.NR-RR-310801
Set No. 3
(b) Describe Brodic purifier counter current cooling crystallizer.
III B.Tech I Semester Supplementary Examinations,June 2010 · MECHANICAL UNIT OPERATIONS · Chemical Engineering · Time: 3 hours · Max Marks: 80 · Answer any FIVE Questions · All Questions carry equal marks · ***** · 1. (a) Write about the construction of monolithic multichannel element of a mem- · brane filter.
(b) Discuss in detail the basic combinations of security associations? [4+12] · 2. (a) Differentiate between Public key cryptography and Digital signature with rel-.
2. III B.Tech I Semester Supplementary Examinations,June 2010 ... [16] · 3. Explain the different methods of sludge disposal and role of sludge as fertilizer. [16].
Set No. 2. III B.Tech II Semester Supplementary Examinations,May 2010 ... 1. It is required to transmit telephone messages across the United States, a 3000.
u is the velocity in metre per sec at a distance of y meters above the plate, · determine the ... Data: · Cross sectional area of the packed column tube = 0.09 m2.
Answer any FIVE Questions · All Questions carry equal marks · ***** · 1. State and apply Biot-Savart law to find velocity induced at a point by an infinite.
for this gases/ lb mol between the bottom and the top of the stack. .... at 750 mmHg of pressure, given that latent heat of vaporization is 88.4 cal/g. (R=1.987 ...
If the base current is changed by 0.2 mA, calculate the change in collector current. [3+8+5]. 7. (a) Classify timers according to the function and the techniques ...
Briefly explain two fundamentally different ways in which a cell might control the ... Explain metabolic flux analysis of citric acid fermentation of Candida lipolytica.
Explain the working principle behind · scanning beam thermometer with a schematic. What are the different applications · of scanning beam thermometer? [16].
(a) Derive the transfer function of an a.c. servomotor and draw its characteristics. (b) Explain the Synchro error detector with circuit diagram. [8+8]. 3. AjntuWorld.
Write a simple assignment statement with one arithmetic operator in C language. For each component of the statement, list the various bindings that are required ...
Explain the steam hydrogen reforming process for the production of hydrogen? [16] · 5. Define Portland cement and discuss about types of Portland cement. [16] · 6. (a) What is a paper? List out different types of paper products. (b) Discuss the envir
(b) Explain about matching by correlation? [8+8] · 6. Explain about the following Geometric Transformations. a) Spatial Transformation · b) Gray level Interpolation. [16] · 7. How would you convert an image from a square grid to a hexagonal grid? [16
(b) Give the factors which will affect the selection of conductor size of feeder.[8+8] · 5. (a) Give detailed analysis of three phase balanced primary lines · (b) Consider a balanced 3 phase circuit having Vs and Vr are the sending and · receiving en
2. III B.Tech II Semester Supplementary Examinations,May 2010 ... [8+8] · 3. (a) Give the algorithm to generate a decision tree from the given training data.
SOFTWARE PROJECT MANAGEMENT · Common to Information Technology, Computer Science ... (b) Write an overall software acquisition process of CCPDS-R. [8+8] · 2. Describe the various dimensions of scheduling? ... 7. Provide a default outline for release
(b) What effect would setting to zero the lower order bit planes have on the · histogram of an image in general. [16] · 7. Consider the image segment shown · (a) Let V={0,1} and compute the lengths of shortest 4- ,8- and m-path between · p and q. If
State and explain the principles of conventional Software Engineering? [16] · 2. Explain the following with respect to CCPDS-R: · (a) People factors · (b) DOD-STD-2167A artifacts. [8+8] · 3. Explain about predominant Cost estimation process and sugge
The clay liquid limit = 50%, · natural water content = 40.5%, and G = 2.70. The saturated unit weight is · 18.9 kN/m3. Estimate the ultimate settlement due to consolidation of the clay · layer, assuming the site to be flooded. [8+8] · 3. Compute the
a feature map. [8+8] · 6. (a) Describe about cut, paste commands. (b) Write a detail notes on sort command. [8+8] · 7. Write a C program to listing all the files in a given directory and in its subdirectory. [16] · 8. Compare the back propagation alg
waste of 2.2 Ã 106 litre/day with B.O.D. of 800 mg/l are produced. In addition, domestic sewage is produced at the rate of 200 litres/capita/day, the per capita. BOD of sewage being 76 gm/day. An expansion factor of 10% is to be provided. The efflue
(a) What are the factors which determine the resistance to flow? (b) Given the radius of aorta as 1.3Ã10â2m, determine the resistance and pressure · drop over a 0.2m distance, if the flow rate is 10â4m3/s. [8+8] · 7. (a) Explain the inverse effe
(b) Describe the single-blocked queue and multiple-blocked queues with an · example. ... (a) Discuss the objectives for a file management system. (b) Illustrate ...
Line / spline, Circle / ellipse, arc, rectangle, fillet / chamfer, point, hole center, ... Cutting speed = 2.5 m/sec, ... new coordinates of the end points of the line. [16].
