II B.Tech I Semester Supplementary Examinations, May 2005 PHYSICAL METALLURGY (Metallurgy & Material Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Name various parts of scanning electron microscope and briefly explain each one of them. (b) Briefly discuss lens materials, manufacture and applications. 2. (a) Define octahedral and tetrahedral sites and discuss with reference to BCC and FCC structures. (b) Give an account on bonding and material property. 3. (a) What is allotropy? Discuss various allotropic forms of iron and their properties. (b) Explain why increase of pressure may give allotropic transformation to close packed structure? 4. (a) What is a solid solution? What is an electron compound? Distinguish between solid solution and electron compound with examples. (b) Explain with neat diagrams how the micro - structure of a pure metal may change with addition of alloying elements. 5. (a) Explain the lever rule as applied to equilibrium diagrams. (b) “Eutectic composition usually does not show coring whereas a solid solution may show coring”. Explain why. 6. (a) What is congruent melting alloy? Does eutectic alloy come under the above class? (b) Explain miscibility gap. (c) Discuss the coordinates of a phase diagram. 7. The Microstructure of a Fe-Fe3 C alloy consists of pro-eutectiod Ferrite & Pearlite. The mass fractions of these two-constituents are 0.286 & 0.714 respectively. Determine the concentration of carbon in this alloy. 8. (a) Draw the T-T-T diagram for a eutectoid steel label the various regions & lines. Explain the effect of various elements on the position and shape of T-T-T diagram.. (b) Explain the Pearlitic & Martensitic transformation. ????? 1 of 1
NR211801 II B.Tech I Semester Supplementary ... Accounts
(a) What is congruent melting alloy? Does eutectic alloy come under the above class? (b) Explain miscibility gap. (c) Discuss the coordinates of a phase diagram ...
7. a) How will you prepare Thiophene? What are its chief uses? b) What will happen when Quinoline and Isoquinoline are treated with · alkaline KMnO4 solution ...
1.a) Draw a neat sketch of optical microscope and the trace of rays through the optical · system from the ... c) Explain the term resolving power of a microscope.
7.a) What is non-destructive testing of materials? What are the aims of NDT? List out · various NDT methods. b) Explain in detail the X-ray radiography method.
(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 ...
(a) Describe Vegards Law with examples. (b) Explain why alloy find more applications than pure metals? (c) Explain why if one element is highly electronegative ...
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.
Make a survey of petroleum reserves in the world and compare them with the · reserves available in India. Discuss the various exploration methods for finding.
Code No: 320554. III-B.Tech. II-Semester Supplementary Examinations, April/May-2004 · LANGUAGE PROCESSORS · (Common to Computer Science and Engineering and Computer Science and · Information Technology) · Time: 3 Hours · Max. Marks: 70 · Answer any F
represented by three entity sets like AIRPORT,AIRPLANE and FLIGHT. Assume suitable attributes for each entity. 3.a) Differentiate between BCNF and 3NF.
Write a C++ program that creates a data file containing list of Telephone numbers · and names. Use a class object to store set of data. 8. Write short notes on:.
The km value of an enzyme is known to be 0.01 mol/l. To measure the maximum rate of reaction rate catalyzed by the enzyme, the initial rate of reaction was ...
(a) Job order production and batch production system. (b) Mass production and flow production. [4+4+4+4] · 7. DefineâCritical pathâ, âslack timeâand âDummy ...
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.
Discuss the Dynamic programming method to solve Unit commitment problem · in power systems. ... by 90°. Calculate the reactive power of the load. ^^^. OR.
