Wednesday, April 3, 2013

Engineering Materials and metallurgy Anna University Question papers May / June 2012 For 4th Semester Automobile Engineering

Engineering Materials and metallurgy Anna University Question papers May / June 2012 For 4th Semester Automobile Engineering

B.E/B.Tech degree examination,May/June 2012 
Engineering Materials and metallurgy 
AUTOMOBILE ENGINEERING
(common to mechanical engineering) 
FOURTH SEMESTER -(regulation 2008) 
Answer all questions
PART A-(10*2=20 MARKS)
1.Differentiate Isomorphous and Eutectic reactions. 
2.Draw the microstructure eutectoid steel and white cast iron. 
3.Write the importance of spheroidising annealing. 
4.Define hardenability and case depth. 
5.Differentiate between Izod and Charpy impact testing. 
6.Draw the S-N curve for mild steel and aluminium. 
7.what is the effect of alloying Nickel and Chromium in steels? 
8.Differentiate between precipitation hardening and dispersion
strengthening. 
9.Define degree of polymerisation. 
10.what are PEEK and PMMA?
PARTB-(5*16=80)
11. (a)(i) Indicate the different invariant reactions in Fe-Fe3 phase
diagram and draw and label all the phases.(8)
(ii) Discuss the different classifications of steels and cast irons.(8)
(or)
(b)(i) Eraw the indicative eutectic phase diagram (partially solubletype) (8)
(ii) Explain the Hume Rothery rules governing substitional solId solution(4)
(iii) Write short notes on about SG Cast iron. (4)

12. (a) what is annealing? Discuss in detail on different types of annealing and compare with normalizing. (16)
(or)
(b) (i) what is tempering?Discuss the structural t ransformation during
tempering. (8)
(ii) what is carburizing? Discuss nitriding process and its importance for
industrial applications. (4)
(iii) Describe the Jominy End Test in details for determination of hardenability. (4) 

13. (a) (i) Draw the engineering stress – strain curve for mild steel, aluminium and cast iron. Discuss the tensile test and different mechanical properties obtained in tensile testing.(8)
(ii) Write a short note on compression test. (8)
(or)
(b) (i) List the various types of hardness testing . Write a short note on Brinell and Vickers hardness and their significance. (8)
(ii) What do you mean by slip and twinning? (8) 

14. (a) (i) Describe the stainless steels with respect to composition, properties and applications. (8)
(ii) What is maraging steels? Discuss the strengthening method of maraging steels. (8)
(or)
(b) (i) Discuss different types of copper alloys and their properties and applications. (8)
(ii) Write short notes on bearing alloys. (8)


15. (a)write the properties and applications of the following poymers and discuss anyone fabrication methods of polumers. (16)
(I )PMMA, (II)PP, (III)ABS amd
(iv)PTFE. (or)
(b)(i)List the important engineering ceramic materials and discuss its general applications of ceramic materials in various engineering fields. (8)
(ii)What are the advantages and disadvantages of ceramics? (8)

Anna University Question papers Engineering Materials and metallurgy May / June 2013 For 4th Semester Automobile Engineering

Anna University Question Papers Electronics And Microprocessor May / June Anna Univ Question Paper 2013

Anna University Question Papers Electronics And Microprocessor May / June 2012 Anna University Question Paper 2012
B.E/B.Tech. DEGREE EXAMINATION, MAY/JUNE 2012
 Fourth Semester 
Mechanical Engineering 
ELECTRONICS AND MICROPROCESSOR
(Common to Automobile and Production Engineering)
(Regulation 2008) 
ANSWER ALL QUESTIONS:
PART A- (10*2=20 marks)
1. Define Rectification. 
2. Define Voltage Regulation. 
3. What is the need for transistor biasing?
 4. Draw the transfer characteristics of FET. 
5. Wat are Flip Flops? 6. Draw the Half adder circuit. 
7. List the various instruction types in 8085. 
8. What are the various addressing modes in 8085? 
9. What do you mean by interfacing? 10. List out some applications of the microprocessors.
PART B-(5*18=80 marks)
11. (a) (i) Draw and explain the circuit of a full wave rectifier. (8)
(ii) Discuss about intrinsic and extrinsic semiconductors. (8)
(or)
(b) (i) What do you mean by zener effect? Explain the characteristics of zener diode. (6)
(ii) Explain how zener diode is used as a voltage regulator. (10) 

12. (a) (i) Draw and explain the circuit of a class B Pushpull power amplifier. (10)
(ii) What do you mean by negative feedback? List the characteristics and advantages of a negative feed back amplifier. (6)
(or)
(b) Draw and explain the characteristics of a FET amplifier and discuss
the merits and demerits. 

13. (a) (i) Design a Full adder. (10)
(ii) Discuss the operation of RS flip flop and D flip flop. (6)
(or)
(b) Draw and explain the operation of A/D and D/A converters. (16) 14. (a) Sketch the architecture of 8085 and explain the modules in detail. (16)
(or)
(b) With examples, explain the data transfer instructions and arithmetic
instructions of 8085. (16) 

15. (a) Draw and explain the block diagram and operation of temperature
controlling system with a microprocessor. (16)
(or)
(b) Draw and explain the block diagram and operation of Traffic light controller with a microprocessor. (16)

Electronics And Microprocessor May / June 2012 Mech 4th Semester Anna University Question Papers Anna University Question Paper 2012