1. (a) Explain the various mechanisms of heat transfer.
in
II B.Tech I Semester Supplimentary Examinations, May/Jun 2009 FURNACE TECHNOLOGY AND PYROMETRY (Metallurgy & Material Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
ld .
(b) Explain the various differences between steady state and variable thermal conduction. [8+8] 2. (a) Derive Newton-Rikman law for a fluid in contact with a solid boundary.
(b) Describe various types of heat exchangers based on temperature distribution. [8+8] 3. (a) Explain the concept of black body.
or
(b) Discuss about emissivity of materials.
(c) Explain the mechanism of heat transfer by radiation. 4. Write short notes on the following:
uW
(a) Thermal diffusivity
[5+6+5]
(b) Thermal efficiency of insulation
(c) Unsteady state heat conduction.
[6+5+5]
5. (a) Explain the construction of a tubular furnace for sintering purpose, heated by electric resistance principle. Discuss the advantages, limitations and applications of the above furnace.
nt
(b) Discuss the factors influencing the selection of frequency for an induction furnace. [11+5]
Aj
6. What are the various types of thermocouples available. Give composition of the materials used for the construction of thermocouples. What are the advantages, disadvantages and applications of each one of them. Also indicate their temperature ranges. [16] 7. (a) What is a resistance thermometer? Explain the working principle of resistance thermometer. Name some of the applications of resistance thermometer. (b) Explain the working principle, constructional details and operation of a resistance thermometer. [8+8]
8. (a) What are the sources of error in radiation pyrometers? Explain them. (b) Discuss in detail about pyro-optical pyrometer. ????? 1 of 1
NR211802 II B.Tech I Semester Supplimentary Examinations, May/Jun ...
(b) Describe various types of heat exchangers based on temperature ... (c) Explain the mechanism of heat transfer by radiation. [5+6+5] ... (a) Thermal diffusivity.
2. Explain the following: · (a) Reynolds number · (b) Nusselt number · (c) log mean temperature differene. (d) importance of heat transfer in furnace technology.
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 ...
[8+8]. (b) Explain the working of a single stage impulse turbine. 8. (a) Enumerate the advantages and disadvantages of gas turbines. [8+8]. 1 of 2. AjntuWorld.in ...
(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 ...
[8+8] · 7. (a) How will you prepare Thiophene? What are its chief uses? [5+3] · (b) What will happen when Quinoline and Isoquinoline are treated with alkaline.
(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 ...
NR. II B.Tech I Semester Supplimentary Examinations, May/Jun 2009 ... (b) The electric vector E of an electromagnetic wave in free space is given by the.
[4x4=16] · (a) Scrotum · (b) Sex glands · (c) Fallopian tubes · (d) Seminiferous tubules. 7. What are Lymph Nodes? Discuss about the spleen with a neat structure.
4. (a) Use Warshall's algorithm to find the transitive closure of the relation [10+6] · R = {(1,2)(1,3)(1,4)(2,3)(2,4)(3,4)} · (b) Are the simple graphs with the following ...
(b) A carrier wave of frequency 100 MHz is frequency modulated by sine wave of · amplitude 20 volts and frequency 100 KHz. The frequency sensitivity of the · modulation is 25 KHz per volt. Determine the approximate bandwidth of FM · wave using Carson
(a) What is the difference between chipping and spalling? (b) Explain how tool life curves are established? (c) Discuss working principle of strain gauge ...
Explain the construction of elastic strain gauge? What are the problems associated · with the use of elastic resistance strain gauges how can you find such a ...
of 1 msec synchronizing pulses are applied to the device such that breakdown · voltage is lowered by 50 V at each pulse. The synchronizing pulse frequency.
1. (a) What are the main objectives of using a pattern in sand molding? [7+9] · (b) Explain the ... Explain the principle involved in resistance welding. What are the ...
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 ...
(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.
1. Discuss in detail about the advantages of Robotics over other form of Automation ... Consider the three-link articulated robot of figure 5. Derive the forward ...
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) 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 ...
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.
(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?
