Saturday, June 20, 2009

June 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. How engineering material are classified? Give their classification. 20 marks
Ans: Refer Page 1 of BME - Basant Agrawal, Wiley India
Or
2. Draw a nominated stress-strain diagram for a ductile material like mild steel and write down Hooke's law. 20 marks
Ans: Page 17-18 of BME - Basant Agrawal, Wiley India
3. Write short notes on the following measuring instruments: (a) Venier calliper (b) Dial gauge. 10 marks each
Ans: Page 79 and 84 of BME - Basant Agrawal, Wiley India
Or
4. Write down the names of important parts of a lathe machine and also write down the names of important operations of lathe machines. 20 marks
Ans: Refer Page 94-97 of BME - Basant Agrawal, Wiley India
5. Write and explian Bernoulli's theorem. 20 marks
Ans: Refer Page 12 of BME - Basant Agrawal, Wiley India
Or
6. Explain the following fluid properties (a) Pressure (b) Density (c) Viscosity. 20 marks
Ans: Refer Page 111, 112, 115 of BME - Basant Agrawal, Wiley India
7. Write down first law of thermodynamics and enlist its short comings. 20 marks
Ans: Refer Page 165 and 172 of BME - Basant Agrawal, Wiley India
Or
8. How boilers are classified? Write down few names of mountings and accessories of a boiler. 20 marks
Ans: Refer Page 216 and 347 of BME - Basant Agrawal, Wiley India
9. Write down the working of four stroke petrol engine with the help of neat sketches. 20 marks
Ans: Refer Page 329-330 of BME - Basant Agrawal, Wiley India
Or
10. Explain working of a four stroke diesel engine with the help of neat sketches. 20 marks
Ans: Refer Page 330-331 of BME - Basant Agrawal, Wiley India.