UCM QB - MODEL

ME 2026 Unconventional Machining process
PART – A ( 2 marks)

1. What are functions of dielectric fluid used in EDM?
2. Write a note on electrical discharge machining?
3. Define W/T ratio?
4. What is cycle time in connection to EDM ?
5. What are the prime requirements of tool material in EDM?
6. What are the functions of adaptive control used for EDM?
7. Explain the term over cut with reference to Electric discharge machining process.
8. Explain how the current density affect the MRR in a ECM process .
9. What are the limitations of ECM?
10. Explain the term Etch Factor with reference to Electro chemical machining process.
11. Explain ‘ recast metal’.
12. What are the factors that influence oxidation in ECM?
13. What are the results when an improper selection of electrolyte in ECM is done?
14. Describe the commonly used gas mixtures in PAM and their corresponding work materials.
15. What are the limitations of ECG?
16. What is the application of ECG?
17. What are the characteristics of Laser beam?
18. Write the principle of Plasma arc machining.
19. Give a brief note about electro chemical honing process
20. What are the limitations of Laser beam machining ?
21. Compare and contrast LBM and EBM processes
22. Mention the kind of materials that can be machined by PAM.
23. What are the methods generally used to filter the electrolyte?
24. What are the characteristics of a good ECM tool?
25. What are the gases commonly used in LASER?
26. What is the effect of capacitance in EDM?
27. What are the advantages of Laser drilling?
28. Write a note about the recent advancements in Laser machining ?





PART B

1. Briefly discuss about the effect of high temperature and pressure of electrolyte on the ECM process. Also discuss about the economics of ECM.
2. Explain the principle of LBM with neat sketch ,list out the advantages and limitations of LBM process.
3. Explain the principle of PAM with sketch , list out the advantages and limitations of PAM process.
4. What is non transferred and transferred mode of plasma arc ? Explain the mechanism of material removal in PAM
5. Discuss the factors that influence the quality of the cut in PAM.
6. What is laser? Explain how it is used to machine the materials. Discuss in detail the thermal features and analysis of laser beam machining.
7. Explain the classification of various spark erosion generators. With help of neat sketch describe the mechanism of material removal in EDM.
8. Mention the specific advantages of using chemical machining over electro chemical machining giving some of the practical applications of chemical machining process.
9. Describe the process of electrochemical machining.
10. Discuss about the electrochemical honing and electrochemical grinding.
11. Explain the principles and elements of EBM, also how the worktable is protected from getting damaged by electron beam.
12. Discuss how the process variables influence MRR, HAZ and pattern generation in PAM.
13. Explain the process capabilities of EBM and PAM

congrats..2008-2012 mech batch

I congratulate all 2008-12 batch of our college who have got excellent grades in the exams may 2011. I specially congratulate my students of the subject Unconventional machining process who have produced a new record in pass percentage.

UCM QB 2

QUESTION BANK – II
Third Year, VI Semester
ME 2026 Unconventional Machining process
PART – A ( 2 marks)

1. What are functions of dielectric fluid used in EDM?
2. What the dielectric fluids commonly used in EDM?
3. What are the prime requirements of tool material in EDM?
4. What are the limitations of EDM process?
5. What is cycle time?
6. What are types of power supply circuits used in EDM?
7. What is the process parameters in EDM ?
8. List recent developments in EDM process.
9. In EDM what are the materials used to make the tool ?
10. What is the function of the electrolyte in ECM process?
11. Differentiate chemical machining and ECM,with respect to principle, MRR, and other Process parameters .
12. What is the purpose of etchant and makant in Chemical machining process?

PART- B ( 16 marks)

1. Explain the process of electrical discharge machining, its process
parameters and applications.
2. Describe the wire cut EDM equipment, its working, applications and Advantages
3. Explain the classification and characteristics of various spark erosion generators.
4. With help of neat sketch describe the mechanism of material removal in EDM.
5. Describe the working principle and elements of chemical machining. What are the factors on which the selection of a resist for use in chemical Machining?
6. What are the specific advantages of using chemical machining over
electrochemical machining? Give some of the practical applications of
chemical machining process.
7 Explain the principle of ECG with sketch. List out the advantage of ECG over conventional grinding.
8 Describe the process of electrochemical machining. Discuss about the electro checmical honing and electro checmical grinding.

Question bank for UCM

In order to facilate the learning process, i have given a link to download the question bank . Students may make use of it for the upcoming unit test -1.

Click here to download

Ultrasonic machining

The link below directs you to download the the content of IIT, which I have refered for our class. It gives a good understanding of Ultrasonic machining Process.

Click here to download the content

UCM first unit : ME 2026

Do find the link which gives you the material for the first unit which was discussed in the class. Pl go through it and give your comments.

First unit : Click here to download

AJT Technical paper: Just go through it

UCM MODEL PAPERS

Find the 3 sets of model papers for the subjects Unconventional machining process.
You may find it useful for preparing for university exams

MODEL PAPERS : CLICK TO DOWNLOAD

ECH- Electro Chemical Honing

Class Lectures - UCM

Introduction to jet machining

Water jet machining - overview

UCM study materials for students

Dear students ,Once again I am happy to present you some of the materials for learning the subject "Unconventional Machining Process " [learnt by sixth semester Anna University students ]in addition to my regular class lecture. Do utilise these and give your feedback.

1. Syllabus
2. University question Paper
3. Two marks with answers
4. UCM QUESTION BANK - important questions
5. ECM Video
5. Laser cutting video
6. Lecture material
7. About Ultrasonic machining - Applications
8. Anna university question papers

9. Model question papers

10. Assignment topic

Syllabus for UCM ME 2026

ME2026 UNCONVENTIONAL MACHINING PROCESSES
(COMMON TO MECHANICAL AND PRODUCTION)
OBJECTIVE:
To learn about various unconventional machining processes, the various process
parameters and their influence on performance and their applications

UNIT I INTRODUCTION 5
Unconventional machining Process – Need – classification – Brief overview .

UNIT II MECHANICAL ENERGY BASED PROCESSES 10

Abrasive Jet Machining – Water Jet Machining – Abrasive Water Jet Machining - Ultrasonic Machining. (AJM, WJM, AWJM and USM). Working Principles – equipment used – Process parameters – MRR-Variation in techniques used – Applications.

UNIT III ELECTRICAL ENERGY BASED PROCESSES 8
Electric Discharge Machining (EDM)- working Principle-equipments-Process Parameters-Surface Finish and MRR- electrode / Tool – Power and control Circuits-Tool Wear – Dielectric – Flushing – Wire cut EDM – Applications.
UNIT IV CHEMICAL AND ELECTRO-CHEMICAL ENERGY BASED PROCESSES 12Chemical machining and Electro-Chemical machining (CHM and ECM)-Etchantsmaskant-
techniques of applying maskants-Process Parameters – Surface finish and MRR-Applications. Principles of ECM-equipments-Surface Roughness and MRRElectrical circuit-Process Parameters-ECG and ECH - Applications.
UNIT V THERMAL ENERGY BASED PROCESSES 10
Laser Beam machining and drilling (LBM), plasma arc machining (PAM) and Electron Beam Machining (EBM). Principles – Equipment –Types - Beam control techniques – Applications.

TOTAL: 45 PERIODS
TEXT BOOK:1. Vijay.K. Jain “Advanced Machining Processes” Allied Publishers Pvt. Ltd., New Delhi, 2007

REFERENCES:1. Benedict. G.F. “Nontraditional Manufacturing Processes” Marcel Dekker Inc., New York (1987).
2. Pandey P.C. and Shan H.S. “Modern Machining Processes” Tata McGraw-Hill, New Delhi (2007).
3. Mc Geough, “Advanced Methods of Machining” Chapman and Hall, London (1998).
4. Paul De Garmo, J.T.Black, and Ronald.A.Kohser, “Material and Processes in Manufacturing” Prentice Hall of India Pvt. Ltd., New Delhi ,8th Edition,2001.