Wednesday, February 23, 2011

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.