With a schematic diagram explain the operation of a hot blast cupola. What is its application? How are the refractories classified? Explain the factors in the selection of refractories for melting furnaces. How are the furnaces classified? Explain the factors which influence the selection of melting furnaces for foundries. Explain the differences in the processes of metal casting as applied to grey iron and malleable iron.
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Code No. 320358 III B.Tech II-Semester Supplementary Examinations November 2003 ADVANCED METAL CASTING (Common to Mechanical Engineering, Production Engineering and Mechanical Manufacturing Engineering) Time: 3 hours Max. Marks: 70 Answer any Five questions All questions carry equal marks ---
What are the requirements of a good gating system? Discuss the characteristics of a pressurized and non-pressurised gating system.
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Explain the term ‘ directional solidification’ and its significance. How can this be promoted? Discuss the methods of reducing riser size.
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How are the diecasting process classified? Explain the applications of each type. Describe the investment casting process and explain its suitable applications.
6. a)
How are the centrifugal casting processes classified? Briefly explain the differences in these processes. What are the relative advantages of CO2 process and shell moulding process?
b)
Describe any one method of sand reclamation. Describe the ultrasonic flaw detection test. What is its advantage over X-Ray test?
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Explain any three of the following: a) Duplexing b) c) Inoculation d)
Code No. 320358 III B.Tech II-Semester Supplementary Examinations ...
1. a) With a schematic diagram explain the operation of a hot blast cupola. What is its · application? b) How are the refractories classified? Explain the factors in ...
1.a) Explain with a neat sectional view the operation and advantages of hot blast · cupola. b) Discuss the various types of refractories used for cupola lining.
320256. III-B.Tech. II Semester Supplementary Examinations December 2002/January 2003 · MODELLING OF POWER SYSTEM COMPONENTS · (Electrical and Electronics Engineering) · Time: 3 hours · Max. Marks: 70 · Answer any FIVE questions · All questions carry
1011. 7.a) Discuss the generation and detection of pulse width modulation. b) Explain the principle transversal equiliber. 8. Write short notes on the following:.
... plate capacitor is · equal to the conduction current in the leads. b) Investigate the vector magnetic potential for the infinite, straight, current element · L in free space. 3. Find the magnetic field intensity due to the presence of a finite st
2.a) With a neat sketch explain the operation of a cupola, its charge composition and · control of the melt composition. b) Briefly explain the pressure die casting ...
b) Explain heat treatment given to high speed tool steels. 7. Explain structure, properties and applications of any THREE of the following: · (a) Al-Si alloys (b) ...
b) Draw a graph showing the refractive index distribution of central core cladded · optical fibre and explain the plot. 2.a) Give any three applications of optical ...
5.a) What is sine bar. Sketch an arrangement for any one of the applications. b) Describe the constructional features and working of optical collimator.
Explain in detail gas liquid contact in mechanically agitated vessels. ... b) Derive the expression for height of a water cooling tower by using HTU and NTU.
b) With the help of a neat sketch of psychometric chart show the various psychrometric · processes naming them clearly. c) Explain what effective temperature is ...
Write a short note on 'compressor surge and its prevention'. 6.a) In rocket propulsion, explain the following: · (i) Thrust coefficient (ii) Characteristic velocity (iii) Specific impulse. b) Derive the 'Generalised Thrust Equation, of a rocket from
c) What is the difference between the BSA instruction and the interrupt cycle? 8. Write short notes on any two: · a) RISC and CISC Processors. b) Priority interrupt ...
with 64 addressing modes. The computer has 500 instructions. In one of the · instruction format the First Field represents operator field, Second Field is Mode,.
Explain about harmonics generated in e.m.f of a synchronous machine. ... A â 3 â Phase star connected, 4- pole, 50Hz. Alternator develops an open circuit.
4.a) What are the advantages of barometric condenser over surface condenser in steam · jet refrigeration system. b) Explain the phenomenon of energy transfer ...
1. a) Define the role of each of the following components in the operation of an ... b) Compare and contrast the vertical and horizontal micro instructions.
Briefly discuss about Reflections and cross talk problems that affect digital PCBs. 6. Sketch the geometry of a screen fabric and explain about Monofile polyester.
5.a) Explain the principle of working of a precision rotary phase shifter, with neat ... and (ii) a simple ideal dielectric phase shifter in a rectangular guide.
b) The average zinc contrition recovered from a sample of zinc measurements in 36 · different locations is found to be 2.6 grams per milliliter. Find the 95% and ...
1.a) Mercury thermometer is a first order system â Say âTrueâ or âFalseâ. b) Prove your answer by deriving the transfer function of this system. c) How will this ...
A 2 pole-50 Hz Turbo alternator has a rating of 50 MVA. Its rotor has a moment · of inertia 9000 Kg-m · 2 . Calculate its inertia constant in MJ/MVA and its.
4.a) Explain the working of pressure lubrication used in automobile engines. b) Explain the effect of super charging on diesel engine performance. 5.a) Write a ...
