Monday, September 28, 2009

Sep 2009 Question Paper with Model Answers

BE (First/Second) Semester Exam
(Common to all Branches)
Time: 3 hrs
Maximum Marks: 100
Minimum Marks: 35
Note:
All questions are compulsory, internal choices are mentioned with questions.
1. Write down complete classification of Engineering materials with examples. 20 marks
Ans: Refer article 1.1 Page 1 of BME - Basant Agrawal, Wiley India
Or
2. Write down the composition of cast iron, carbon steels and few alloy steels and enlist engineering applications of these materials. 20 marks
Ans: Page article 1.3-1.5 pages 2-7 of BME - Basant Agrawal, Wiley India
3. Draw a neat sketch of simple lathe machine and nomenclatute its important parts. 20 marks
Ans: Draw Fig 1 of Page 94, BME - Basant Agrawal, Wiley India
Or
4. Write short notes on the following measuring instruments: (i) vernier calliper (ii) dial gauge (iii) sine bar (iv) slip gauges. 5 marks each
Ans: Refer (i) article 5.2 page 79 (ii) article 5.4 page 84 (iii) article 5.6 page 86 (iv) article 5.5 page 85 of BME - Basant Agrawal, Wiley India
5. Write down working principle of the following: (i) fluid coupling (ii) pumps (iii) water turbine.
Draw suitable sketches with them if needed. 20 marks
Ans: Refer (i) article 8.1 page 139 (ii) article 8.2 page 140 (iii) article 8.4 page 149 of BME - Basant Agrawal, Wiley India
Or
6. Write down Bernoulli's theorem along with its mathemathical equation. What are the application of this theorem? 20 marks
Ans: Refer article 7.8 page 124 of BME - Basant Agrawal, Wiley India
7. Write down Kelvin-Plank and Clausius equation of Second Law of Thermodynamics. 20 marks
Ans: Refer article 9.3 page 172 of BME - Basant Agrawal, Wiley India
Or
8. Differentiate clearly between mountings and accessories of a boiler with suitable examples. 20 marks
Ans: Refer article 11.7 page 226 of BME - Basant Agrawal, Wiley India
9. Draw Otto and Diesel cycles on P-V diagram and explain various processes. 20 marks
Ans: Refer article 14.5 Page 306 and article 14.6 page 313 of BME - Basant Agrawal, Wiley India
Or
10. Write down working of 4-stroke petrol engine with the help of suitable diagrams. 20 marks
Ans: Refer article 15.3 Page 329-330 of BME - Basant Agrawal, Wiley India.