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Reg. No. :

R 3433B.E./B.Tech. EGREE EXAMINATION,NO\TMBER/DECEMBER 007.

Sixth Semester

(Regulation 2004)

Mechanical Engineering

(Common o Production Engineering)

ME 1OO1 UNCONVENTIONAL MACHINING PROCESSES

(Common o B.E (Part-Time) Fifth Semester Regulation 2005)

Time : Three hours Maximum: 100 marks

Answer ALL questions.

PART A - (10 x2 = 20 marks)

1. Give some advantages of modern machining processes.

2. List the major parts of ultrasonic machines.

3. What is the function of Nozzles in water jet machining?

4. Name some commonly used abrasive slurries.

5. Define flushing in Electric Discharge Machining.

6. What are the electrical parameters which affect the metal removal rate inEDM?

7. What are the functions of electrolr,'tes n ECM?

8. What do you mean by Maskants in Chemical Machining?

9. Give the two major classifications f Electron Beam Machining (EBM)-

10. What does The Word LASER stand for?

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1 1 . ( a )

(b)

L2. (a)

(b )

13. (a)

PA RT B - ( 5 x 1 6 = 8 0 m a r k s )

(i) Briefly explain the overview of the non traditional machiningprocesses.

(ii) why this machining is essential or the industries? (10 + 6)

Or

Draw a sketch of the general arrangement of an ultrasonic machine and

expiain the principle of operation. (16)

Briefly expiain the following machining parameters and how they are

affecting the machining performance of USM. (16)

(i) Frequency of vibration

(ii) Grain diameter

(iii) Applied static load

(iv) Slurry, tool and work material.

Or

Explain in detail about AJM with a sketchand disadvantages.

and discuss ts advantages(16)

Explain the working principle of Electric Discharge Machining with

sketch and list its applications. (16)

Or

(i) sketch and explain the Electrode eed control mechanism of EDM.(10 )

(ii) Discuss he factors to be considered or selection of electrode

materials. (6 )

L4. (a) Expiain the process of Electro Chemicai Grinding(Ecc) with a sketch

and list its applications and advantages. (10 +6)

Or

(b) Explain the principle and process of ECM with sketch and describe the

chemical "..tion that takes place n this process' (10 + 6)

(b)

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15. (a) (i) Briefly explain the various parameters that govern the performance

of PAM. ( 10 )

(ii) Discuss he general guidelines for designing the plasma torches

in PAM. (6 )

Or

(b) Explain the cons truction and working principle of EBM with neat sketch"

List its advantages and limitations. ( 10 + 6)

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