1. (a) Prove the following for a closed system. For constant volume process Q = mCV (T2 − T1 ) For constant pressure process Q = mCP (T2 − T1 )
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II B.Tech II Semester Supplementary Examinations, November/December 2005 THEMODYNAMICS AND KINETICS (Metallurgy & Material Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
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(b) Differentiate between extensive properties and intensive properties with examples. [12+4] 2. (a) Why the internal energy change in an adiabatic process is negative. Explain. (b) Explain the significance of Joule-Thomson coefficient.
(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 entropy. What are its units. (c) Explain the principle of increase of entropy.
[6+5+5]
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4. (a) What is the entropy criterion for spontaneous change in an isolated system? Give an example of a spontaneous process in an isolated system. (b) Give an equation that relates the entropy change in the surroundings to the enthalpy change in the system. (c) When heat is added to the surroundings, the entropy of the surroundings increases. How does ∆Ssurr depend on the temperature of surroundings? Explain. [5+5+6]
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5. (a) What are the conditions for spontaneous and feasible reactions, in terms of free energies? Explain. (b) Define and discuss the importance of Gibb’s and Helmholtz function.
[8+8]
6. (a) State and explain third law of thermodynamics. What is it’s importance.
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(b) Derive an expression to show variation of equillibrium constant with temperature. [6+10]
7. (a)
i. Does the Clapeyron equation involve any approximation, or is it exact? ii. What approximation are involved in the Clapeyron -clasius equation.
(b) What is Clapeyron equation? What assumptions are made in obtaining the Classius-Clapeyron equation from Clapeyron equation? [8+8]
8. (a) Derive an expression for the rate constant of a first order reaction. 1 of 2
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Code No: NR221801
(b) Discuss the importance of equilibrium constant and its effect on equillibrium conversion. [8+8]
NR221801 II B.Tech II Semester Supplementary Examinations ...
(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 ...
(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 ...
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.
(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) Distinguish between deterministic test pattern generation and probabilistic ... circuit by inserting addition control logic to the following function, obtain the.
(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.
starter, (iii) Auto transformer starter limiting the supply line starting current to · twice the full-load value. Find the auto-transformer tapping in this case. - - -.
(a) Apply the Bresenham's algorithm to turn up pixels along the line segment determined by points (5,7) and (12,11). (b) Give parametric equation of a line ...
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.
5. a) Describe circuit switching and packet switching techniques? b) Compare connection oriented and connection less services? 6. Describe ISO-OSI seven ...
