Rr321405-automobile-engineering

Set No. 1

Code No: RR321405

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 AUTOMOBILE ENGINEERING (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) What are the objects of engine lubrication?

[4]

(b) How two stroke engines are being lubricated.

[6]

(c) List the parts of any type of engine lubricating system.

[4]

2. (a) Describe the distributor type fuel injection pump.

[4+4]

(b) Explain the various types of injector nozzles.

[4+4]

3. (a) What are the requirements of a cooling system. (b) Explain the working of Forced circulation cooling system.

[5] [5+6]

4. (a) Describe with a neat sketch of Magneto-ignition system of a four-cylinder engine. [5+5] (b) Compare Battery ignition system with Magneto-ignition system. 5. (a) What is the importance of temperature indicator

[6] [8]

(b) Explain the working of a temperature indicator used in automobile engines. [8] 6. (a) Explain the construction and use of Overdrive? List out its advantages and imitations. [4+4+4] (b) Explain the working of a dog clutch. 7. (a) Sketch the sectional view of the tyre and explain its various parts.

[4] [4+4]

(b) Discuss the constructional details of a cross ply tyre.

[4]

(c) What are the functions of tyres?

[4]

8. (a) What are the differences between Ackerman steering gear and Davis steering gear. [6] (b) With the help of a suitable sketch explain the working of the worm and nut type steering gear. [4+4] (c) Explain the function of “Tie-rod” in the steering Mechanism. ⋆⋆⋆⋆⋆

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[2]

Set No. 2

Code No: RR321405

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 AUTOMOBILE ENGINEERING (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Give details about classification of engines based on valve arrangements. [6] (b) With a neat sketch explain the operation of a two-stroke petrol engine. [5+5] 2. (a) What are the requirements of a diesel injection system. (b) Describe the working of a fuel feed system in diesel engines. 3. (a) Explain the working of evaporative cooling system.

[8] [4+4] [4+4]

(b) What are the merits of evaporative cooling system over conventional watercooling system. [4+4] 4. (a) Briefly discuss the various factors which will affect the ignition timing.

[8]

(b) Briefly discuss the main factors before deciding the optimum firing order of an engine. [8] 5. (a) Explain the construction and working of a wind screen wiper with a simple sketch. [4+4+2] (b) Write short notes about panel board instruments used in an automobile. [6] 6. (a) List out the functions to be performed by the transmission system of an automobile. [8] (b) Explain the arrangements by which engine power is transmitted to the wheels. [8] 7. (a) What are the different types of front end suspensions.

[6]

(b) With the help of a diagram, explain the construction and working of ‘Mac Pherson strut type’ independent suspension system. [5+5] 8. (a) What are the various types of steering gears? Explain the construction of one form of steering gear commonly employed in modern cars. [4+4] (b) Explain the term “Backlash” in Steering Gear. Write the common procedure adopted to adjust the backlash in steering gear. [4+4] ⋆⋆⋆⋆⋆

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Set No. 3

Code No: RR321405

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 AUTOMOBILE ENGINEERING (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Explain the two types of cylinder-liners used in engines. (b) Describe the different types of engine valves.

[4+4] [4+4]

2. (a) Describe the common rail fuel injection system used in diesel engines. [4+4] (b) Explain the working of a diesel injection pump.

[4+4]

3. (a) What are the advantages of liquid cooling systems and what its limitations? [4+4] (b) Explain the working of thermosyphan cooling system.

[4+4]

4. (a) Explain the working of Centrifugal advance mechanism with the help of neat sketch. [5+5] (b) Explain the function of lead-acid storage Battery.

[6]

5. (a) What is the principle of a generator? Give its constructional details

[4+4]

(b) Explain the working of a cutout relay as used in the charging circuit

[8]

6. (a) With the help of a neat sketch, explain the construction and operation of a constant mesh gearbox. [4+4] (b) What do you mean by double-declutching? Explain how and why it is done? [4+4] 7. (a) Differentiate between tubed and tubeless type.

[7]

(b) Write short note on the following: i. Tyre inflation ii. Wheel balance. iii. Tread pattern.

[3] [3] [3]

8. (a) State the principle and derive equation for correct steering of a vehicle [4+4] (b) Sketch and explain Ackermann steering mechanism. ⋆⋆⋆⋆⋆

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[4+4]

Set No. 4

Code No: RR321405

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 AUTOMOBILE ENGINEERING (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. What are the important basic components of an IC engine? Explain them briefly. [6+10] 2. (a) Describe the distributor type fuel injection pump.

[4+4]

(b) Explain the various types of injector nozzles.

[4+4]

3. Explain the various types of engine cooling systems and compare them. 4. (a) What are the requirements of an ignition system.

[8+8] [6]

(b) What are the types of ignition system and describe the working of Battery ignition system. [5+5] 5. (a) Describe the working of a fuel gauge. (b) Explain the working of a Horn cutout relay.

[4+4] [4+4]

6. (a) Explain the construction and use of Overdrive? List out its advantages and imitations. [4+4+4] (b) Explain the working of a dog clutch. 7. (a) Explain the constant velocity universal joint with a sketch.

[4] [4+4]

(b) What is the purpose of a slip joint in a propeller shaft.

[4]

(c) What are the types of rear axels?

[4]

8. (a) What is the effect of slip angle, inflation pressure on the cornering force.[4+4] (b) Sketch the construction and explain the working of a Davis steering mechanism. [4+4] ⋆⋆⋆⋆⋆

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