III B.Tech I Semester Supplementary Examinations, November 2005 HEAT TREATMENT TECHNOLOGY (Metallurgy & Material Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. Draw Fe-Fe3 C phase diagram and label the phase fields. Discuss the different reactions that take place in this system? [16] 2. Differentiate between: (a) Process annealing and Recrystallization annealing. (c) Stress relieving and tempering
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(b) Spheroidising and Diffusion annealing.
3. (a) What is the significance of post-carburising heat treatment.
[6]
[5]
[5] [8]
(b) What are the various methods used in general for flame hardening? Explain? [8] 4. (a) What is secondary hardening.
(b) What are the effects of alloying elements on tempering.
[2] [4]
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(c) Discuss the effect of alloying elements on time, temperature and transformation curves with respect to their position and shape. [10] 5. (a) With the help of Iron-Iron carbide diagram explain the cooling behavior of Hypo eutectic cast irons with 3% carbon from liquid state to room temperature. [8] (b) Explain the cooling behavior of eutectic cast iron with the help of ironironcarbide diagram? [8]
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6. (a) Explain the properties and microstructure of spheroidal graphite cast irons. [6]
(b) What are the nodulizing elements added to the ladle to get S.G.Iron? Explain its importance? [6]
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(c) Give the process sheet for the heat treatment of white cast Irons to produce malleable cast Irons. [4]
7. Write short notes on the following with respect to composition, properties, Microstructure and applications of (a) Cupronickels
[8]
(b) Gilding metal
[8] 1 of 2
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Code No: NR311803
8. (a) Draw lead-tin equilibrium phase diagram and label all phases in it.
[6]
(b) Explain the various physical and mechanical properties of lead?
[4]
(c) What are the important lead alloys. Explain any Two of them in detail.
(a) Explain objectives and uses of surface hardening. Give the classification of · surface hardening methods? [8] · (b) Discuss any one case hardening method?
(b) The ground water level in a deposit of fine sand is 1.5 m below ground level. Above the water table ... is 21 kN/m3. Calculate the total stress, the neutral stress.
(b) Explain the following particle size measurement techniques. i. Sedimentation ... compaction. [6]. (b) Define Sintering and how is it different from hot pressing.
III B.Tech I Semester Supplementary Examinations, November 2005. AERO SPACE ... (b) Maximum energy theory. [16] ... plain with live examples. (b) Write a ...
4. What are the objectives of wage and salary administration function? [4+6+6] · 5. Write short notes on: · [4x4=16] · (a) Speculative purchasing · (b) Rate contract ...
(a) What are the different problems associated with measurement of low resis- · tances. Explain. (b) How these problems are eliminated by using Kelvins double ...
(b) What is score boarding and its use in RISC? [10] · 5. (a) Explain the salient features of Pentium architecture. [6] · (b) Draw the schematic blocks of Floating ...
Which one you are saving by using statistical time-division multiplexing and prove · it. [16M] · 8. Give two full duplex protocols and explain their operation? [16M].
(a) Pattern plating process. (b) Tenting process. [8+8] · 7. (a) Draw the schematic diagram of magnetic amplifier with a center tapped trans- · former and D.C. ...
A reversible engine operating between a reservoir at 600 K and the ambient at- · mosphere at ... Determine the ratio of energy rejected by both the devices to the.
What is degree of reaction of a gas turbine; how it can be controlled, derive its ... A single stage free vortex turbine is designed for zero degree of reaction at root.
(b) Discuss the help of computers in Cardio vascular evaluation in ICU. [8] · 7. Discribe the use of computers for handicapped persons. Give two examples and.
(a) Explain the pre-anesthetic care and preparation undertaken in a hospital. Why it is important? Explain. [8] · (b) How the patients are monitored during surgery ...
III B.Tech I Semester Supplementary Examinations, November 2005. POWER ELECTRONICS · (Electrical & Electronic Engineering) · Time: 3 hours · Max Marks: 80 · Answer any FIVE Questions · All Questions carry equal marks · ***** · 1. (a) Explain the oper
(c) Explain inverted paging method of memory management. [4+4+8] · 4. (a) Explain banker's algorithm for deadlock detection. (b) What are the criteria for a ...
(a) Discuss the path sensitization in a combinational circuit. shown in figure1 · (b) Find the test set to detect A1- SA0 and A1- SA1 faults using Boolean difference.
8. The convolutional encoder is given below Figure1: · Figure 1: ... (b) Construct a code tree for the convolutional encoder for 3-bit input data. [10] · âââââ.
i. plain carbon steel with 4% carbon and 0.8% manganese, ... (a) It is required to design a square key for fixing a gear on a shaft of 30 mm · diameter; to transmit ...
TECHNIQUES OF METAL JOINING · (Metallurgy & Material Technology) · Time: 3 hours · Max Marks: 80 · Answer any FIVE Questions · All Questions carry equal ...
Figure 1 shows two views of a tripod bracket. All connections are pinned. Find · the forces in magnitude and nature in the three memebers due to a vertical load ...
(b) Explain the bridge type of thermocouple arrangement and mention its ... 3. The standard resistor arm of a Wheatstone bridge has a range from 0 to 100 ohm.
