III B.Tech I Semester Supplimentary Examinations, May/Jun 2009 MECHANICAL UNIT OPERATIONS (Chemical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Give a brief account about the different units in which particle sizes are conventionally expressed. [6]
ld .
(b) Mention the various methods of measuring sizes of particles that are too fine for screen analysis. [4]
(c) Finely divided clay is used as a catalyst in petroleum industry. It has a density of 1200 kg/m3 and a sphericity of 0.5. The size analysis is:
or
Mass fraction 0.088 0.178 0.293 0.194 0.247
uW
Average diameter, mm 0.252 0.178 0.126 0.089 0.040 Find theD w
[6]
2. (a) Write notes on:
i. Batch muller mixer ii. Pan mixer.
(b) Write about the mixing index for solid mixers.
[12] [4]
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3. (a) What is an ultrafine grinder? Specify the size range of products of such grinders [8] (b) Give with the help of a neat sketch, the constructional and operational features of a mikro- atomizer [8]
Aj
4. Derive the relationship used to calculate the pressure drop through filter cake with the help of pressure gradient diagram. Mention the assumptions. [16] 5. (a) Write about the effect of solute concentration on flux in UF system.
[8]
(b) Write about concentration polarization in ultrafiltration membrane along with necessary equations. [8]
6. (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]
1 of 2
NR
Code No: NR310801
7. (a) Explain the mechanism of liquid mixing in a deep cylindrical tank without any baffle where a straight blade impeller is fitted coaxially at the centre. [8] (b) State the various factors which may have influence on the power consumption in the impeller mixer. [8] 8. (a) Explain in detail MSMPR crystallizer.
NR310801 III B.Tech I Semester Supplimentary ... Accounts
4. Derive the relationship used to calculate the pressure drop through filter cake with · the help of pressure gradient diagram. Mention the assumptions. [16].
(b) Briefly explain why recovery is needed. [10+6] · 8. Describe the shadow paging recovery technique. Under what circumstances does it · not require a log. [16].
7. A flat-blade turbine with six blades is installed centrally in a vertical tank. The tank is 1.5 m in diameter; the turbine is 0.5 m in diameter and is positioned 0.5.
(a) Give an overview of C++ class structure? (b) Compare the ... What is the difference between the C++ standard library, and the C++ standard · template library ...
What is IDE. Explain the various features of IDE of Visual Basic. [16] · 2. What is application framework and how it is advantageous in writing programs in · VC++.
(a) How is cellophane made? Name its properties and applications. (b) How is regenerated cellulose in fibre form made? [8+8] · 2. (a) What is Bakelite?
Code No: NR311901. NR. III B.Tech I Semester Supplimentary Examinations, May/Jun 2009 · DIGITAL SYSTEMS DESIGN · (Electronics & Computer Engineering) ... that check the eight possible binary values of three control variables x, y and ... (b) Tabulate
(b) Write the principle of gas analysis by thermal conductivity. [8+8] · 5. What are the various designs of manometers used to measure pressure. [16] · 6. A tank of ...
i. Which page will FIFO replace · ii. Which page will LRU replace · iii. Which page will second chance replace · (b) In a fixed-partitioning scheme, what are the ...
1. (a) Explain under what conditions can Fick's first law be used to solve diffusion · problem. (b) In a diffusion anneal, to what level should the initial temperature ...
(b) A hydraulic press has diameter of ram 200 mm and of plunger 40 mm. It is provided with a lever for applying force to the plunger. If the ratio of leverage.
(b) In what way C++ throw specification differs from throw clause in java. [8] · 8. Explain in detail the sequence control in ML. [16] · *****. 1 of 1. AjntuWorld.in.
III B.Tech I Semester Supplimentary Examinations, May/Jun 2009 · PETROCHEMICAL ENGINEERING · (Chemical Engineering) · Time: 3 hours · Max Marks: 80 · Answer any FIVE Questions · All Questions carry equal marks · ***** · 1. Explain Refining of Crude p
i. an Induction Motor of 40 HP, with 0.8 p.f. and efficiency 0.85 · ii. a synchronous motor of 25 HP, with 0.9 p.f. leading and efficiency 0.9 · iii. Lighting load of 10 ...
(b) Binary data is transmitted over a telephone line with usable bandwidth of. 2400 Hz using the FSK signaling scheme. The transmit frequencies are 2025.
1. (a) Using slip gauges, rollers and micrometers, explain the procedure for determi- · nation of : · i. Small end and big end diameters of a taper plug gauge.
BASIC CLINICAL SCIENCES-II · (Bio-Medical Engineering) ... radiation hazards?. [8] · 7. (a) Explain how Nuclear Medicine is useful in the imaging of CNS?
the concept of Lubrication in Hot extrusion process ? [8+8]. 6. (a) Sketch and describe the construction and working of hydrostatic extrusion and mention some of ...
ARTIFICIAL INTELLIGENCE · ( Common to ... (b) Distinguish between propositional and predicate logics. What are ... (b) Explain Bayesian method of reasoning.
(a) Briefly explain about the optical fibre construction details and show a figure for · transmission of light rays and discuss about the refractive index distribution.
Sketch and describe the essential elements of a two lipped twist drill. Explain the · functions of all the important elements of a twist drill? [16] · 6. Write short notes ...
a flat plate of chord C = 2m ,and at an angle of attack α = 50 . Analyze the flow · field. Obtain lift, drag and pitching moments from Ackerets theory. Elaborate with.
of transition to be provided? (b) Explain the principles of interlocking. [8+8] · 8. (a) Explain briefly the different factors considered for selection of site of a railway.
