D

B3D003 Total pages:2

Reg. No. Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
THIRD SEMESTER B.TECH DEGREE EXAMINATION, JANUARY 2017

Course Code: AU 201
Course Name: S. 1. ENGINES AND COMBUSTION (AU)
Max. Marks: 100 Duration: 3 Hours
PARTA

Answer any 3 Questions

1. Derive an expression to find out the air standard efficiency, mean effective pressure,
specific work transfer and work ratio for ideal Otto cycle (10)

2. Discuss the effect of variation in specific heat and dissociation along with the
comparison of fuel-air cycle with ideal Otto cycle (10)

3. Explain the stages of combustion for SI engines and discuss the effect of various
parameters affecting them (10)

4. Explain the different types of combustion chambers in SI engines with help of neat

figures (10)

PART ந
Answer any 3 Question

5. With a neat sketch explain the working of a battery ignition system (10)
6. Explain the different circuits of a simple carburettor with the help of a neat figure.(10)
7. Explain how distributor-less ignition system works with the help of neat figures for
each components (10)
8. Explain with neat figures the different components of piston assembly. Also list out
the various materials used for their construction. Also explain the different types of

pistons used in engines with neat figures. (10)

Page 1 of 2