JNTU Kakinada B-Tech 4-1 UNCONVENTIONAL MACHINING PROCESSES R13 March 2018 Question Paper

IV B.Tech I Semester Supplementary Examinations, February/March – 2018
UNCONVENTIONAL MACHINING PROCESSES (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) With the help of graph explain how the MRR changes with the grit size of
abrasives.
[4]
b) How is electrochemical grinding superior to conventional grinding? [4]
c) What the functions of dielectric fluid in EDM process? [4]
d) State the mechanism of metal removal in Laser Beam machining process. [3]
e) What are the PAM over oxy-acetylene cutting? [4]
f) What the applications of shaped tube electrolytic machining? [3]

PART ?B (3×16 = 48 Marks)2. a) State the classification of nontraditional machining processes based on energy
domain.
[8]
b) Explain Ultrasonic Machining process with a neat sketch. [8]

3. a) State the procedure for chemical milling along with its applications. [8]
b) State the considerations of tool design for electrochemical machining and explain
the functions of electrolyte.
[8]

4. a) Explain Electro discharge Machining process with a neat sketch. [8]
b) Explain about R-C circuit used for pulse generation in EDM process. [8]

5. a) State the merits, limitations applications of electron beam and laser beam
machining processes.
[8]
b) Explain about the process parameters influencing the electron beam machining
process.
[8]

6. a) Draw a neat sketch of plasma torch. Explain the process of generation of plasma. [8]
b) State and explain about the parameters that influence PAM process. [8]

7. a) Explain Magnetic abrasive finishing process with its applications. [8]
b) Explain the water jet machining process with a schematic diagram. [8]

Code No: RT41034
Set No. 1
R13
1 of 1