Code No: 211852 II B.Tech. I Semester Supplementary Examinations, November-2004 PHYSICAL METALLURGY (Metallurgy and Material Technology) Time: 3 Hours Max. Marks: 70 Answer any FIVE Questions All questions carry equal marks --Name three different types of light filters and briefly explain. What is bright field illumination? Discuss its features. What is dark field illumination? Discuss its features.
2.a) b)
Determine the number of lattice points per cell in cubic crystal systems. Determine the relationship between the atomic radius and the lattice parameter in BCC and FCC structures.
3.a)
What do you mean by polymorphism? Explain polymorphism with a best known example. Calculate the packing factor for BCC of Iron.
4.a) b)
5.a)
b)
6.a)
If a pure metal is cast into (i) A chill-mould and (ii) A sand mould. Explain giving reasons how the result micro structure would differ. Draw the cooling curves for a short freezing range alloy and long freezing range alloy and explain the salient point and in it. Draw a typical Equilibrium diagram for two metals completely soluble both in liquid and solid states. Label the important points, lines and areas in it. Explain cooling of any one alloy from the above system.
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b)
Discuss the law which states the relation between lattice parameter and the amount of solute in solid solution. Explain chemical compounds, metallic compounds and interstitial compounds with suitable examples.
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b)
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1.a) b) c)
7.a)
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b)
Explain the relationship between Equilibrium diagrams and physical properties of Alloys. What are the transformations in the solid state?
8.
Explain: a) The transformation occurring at A3 shows more hysterisis than that occurring at A4. b) Slowly cooled plain carbon steels show decreasing of strength, if carbon becomes more than 0.77%. @@@@@
211852 II B.Tech. I Semester Supplementary Examinations, November ...
2.a) Determine the number of lattice points per cell in cubic crystal systems. b) Determine the relationship ... liquid and solid states. Label the important points, ...
(b) Explain the basic principle of the instrument used for Condition monitoring · of any process. [8+8] · 2. (a) Compare and construct the functioning of rupture ...
What is the theory of lubrication? Explain how surface tension plays a role in the · performance of lubricating oils and hydraulic fluids? What is surface tension ...
(b) What is the purpose of providing âbondsâ in brick work. With the help of · neat sketches illustrate âEnglish bondâ. [8+8] · 2. (a) What is a âdamp-proof courseâ?
A silica brick layer on inside is laid to 150mm thickness and a · magnesia brick of 200mm thickness on outside. The inside and outside wall · surfaces are at 650 ...
(b) The following observations are related to a closed compass traverse ABCD. Find out the stations which suffer local attraction and give the values of the.
2. Explain the following: · (a) Reynolds number · (b) Nusselt number · (c) log mean temperature differene. (d) importance of heat transfer in furnace technology.
NR. (b) Calculate the density of naphthalene decahydride (C10H18) from its refractive index value of 1.4804 at 18 oC. [10+6] · 8. (a) Explain how the depression ...
diagrams. Show that the entropy change during the cycle is zero ... if the small amounts of argon and carbon oxide present in the mixture are · neglected.
(a) Job order production and batch production system. (b) Mass production and flow production. [4+4+4+4] · 7. DefineâCritical pathâ, âslack timeâand âDummy ...
(b) One bag contains 4 White balls and 3 black balls and a second bag contains 3 ... [8+8] · 3. (a) The amount of bread ( in hundreds of pounds) X that a certain ...
(c) Explain sign conventions of heat and work in thermodynamics. [5+5+6] · 3. (a) State and explain second law of thermodynamics. (b) Define and explain ...
b=4.318 cm is fed by a 4 GHz carrier from a coaxial cable. Determine if a · TE10 mode will be propagated. If so calculate the phase velocity and group · velocity.
(c) An amplifier with voltage gain of 60 decibels uses 0.05 of its output voltage in · negative feedback. Calculate the gain of the feedback amplifier. [6+6+4].
Determine the length of the wire needed if the diameter · of the wire is 0.25 mm. Assuming that the temperature coefficient of resis- · tance of the wire is constant, ...
(b) Draw the block schematic of 4x1 MUX and give its truth table. [6] · 6. (a) Design a full adder with minimum number of NAND gates. [8] · (b) Draw the logic ...
8. (a) Enumerate various mechanical and diffusion properties of cartilage with ex- · amples? [8] · (b) Write briefly about âlubricationâ of joints? [8] · *****. 1 of 1.
Black body and Grey body. iii) · Reynolds number and Nusselts Number. 4.a) Derive Reciprocity theorem when the heat exchange is taking place between the.
Polynomials in single variable are stored in the form of linked lists. Each · structure has space for one coefficient and one exponent and a link. Assume.
armature and field resistances are 0.03 ohm. And 60 ohm ... 6.a) Explain with the help of diagrams how a rotating magnetic field is produced in · the air gap of a ...
(figure.1). (c) Obtain Thevenin's equivalent circuit for the network below figure 2. 1 of 3 ... (a) Obtain open circuit and short circuit parameters. Obtain relation ...
Show the reaction mechanisms of the following reactions. (a) Gatterman reaction. ... How will you determine the configuration of glucose with the help of Fischer's method? 7. (a) What ... Explain the theory of colour and constitution? *****. 1 of 1.
Maximize the following problem using Simplex Method. Z = 10x + y + ... 10; x1, x2 ⥠0. 8. Write short notes on the following: (a) Kuhn-Rucker conditions. 1 of 2 ...
