ME-405 Manufacturing Technology - Jun 2025 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aExplain in detail the tool signature in brief.
   How to answer

   • Define tool signature and its notation order
   • Explain each angle/symbol with purpose
   • Give example signature and interpretation
   • Mention ASA/ORS systems if applicable
2. 7 Marks
   bA cylindrical bar of 100 mm diameter is orthogonally straight turned with cutting velocity, feed and depth of cut 120 m/min, 0.25 mm/rev and 4 mm, respectively. The specific cutting energy of the work material is $1 \times 10^3$ J/m$^3$. Neglect the contribution of feed force towards cutting power. Find the main or tangential cutting force (in N).
   How to answer

   • Calculate material removal rate $MRR = v \cdot f \cdot d$
   • Relate cutting power $P = u \cdot MRR$
   • Relate power to tangential force $P = F_c \cdot v$
   • Compute $F_c$ in N
3. 7 Marks
   aWhat do you mean by centreless grinding? What are the advantages and limitations of using centre-less grinding?
   How to answer

   • Define centreless grinding principle
   • Explain setup with regulating and grinding wheel
   • List advantages
   • List limitations
4. 7 Marks
   bExplain briefly the cutting action of a broach. Describe the continues surface broaching machine and explain the type of component surfaces for which it is useful.
   How to answer

   • Describe broach teeth and progressive cutting action
   • Explain continuous surface broaching machine layout
   • List types of surfaces produced
   • State applications
5. 7 Marks
   aWhat are the four different ways for failure of cutting tools? Explain with neat sketch.
   How to answer

   • List four tool failure modes
   • Explain each mode with cause
   • Provide neat sketch of wear/failure
   • Suggest remedies
6. 7 Marks
   bWrite down about the super finishing processes given below in brief:

   1. i)Honing
   2. ii)Lapping
   3. iii)Electro polishing
   4. iv)Buffing
   How to answer

   • Define super finishing purpose
   • Brief principle of honing, lapping, electro polishing, buffing
   • Mention applications/surfaces
   • Compare material removal level
7. 7 Marks
   aWhat is DP cutter? What are the characteristics of DP cutters used for involute gear cutting?
   How to answer

   • Define DP cutter and diametral pitch
   • Explain involute gear cutting principle
   • List characteristics of DP cutters
   • Mention cutter number series
8. 7 Marks
   bWhat is gear hobbing and how does it work? Write the advantages and limitations of gear hobbing process, with neat sketch.
   How to answer

   • Define gear hobbing and hob-work motion
   • Explain working with sketch
   • List advantages
   • List limitations
9. 7 Marks
   aWhat do you mean by welding of plastics? What are the advantages and limitation of the technology?
   How to answer

   • Define welding of plastics
   • Describe common methods
   • List advantages
   • List limitations
10. 7 Marks
    bDifferentiate between the product developed by transfer moulding and extrusion moulding in all the aspects.
    How to answer

    • Describe transfer moulding process and product traits
    • Describe extrusion moulding process and product traits
    • Compare on process, material, shape, cost aspects
    • Conclude suitability
11. 7 Marks
    aExplain the reasons why the unconventional machining processes are used. Draw the neat sketch of EDM, and describe the working principle, advantages and disadvantages of the process.
    How to answer

    • State need for unconventional machining
    • Draw neat sketch of EDM setup
    • Explain working principle and sparking
    • List advantages and disadvantages
12. 7 Marks
    bWhat is the characteristics of electron beam machining, write the advantages and limitation of the EBM.
    How to answer

    • Define electron beam machining characteristics
    • Explain material removal mechanism
    • List advantages of EBM
    • List limitations of EBM
13. 7 Marks
    aExplain the principle of AWJM with a neat sketch. Describe the factors that should be considered in selecting the abrasive in AWJM.
    How to answer

    • Explain AWJM principle with water-abrasive jet
    • Provide neat sketch of AWJM system
    • Discuss abrasive selection factors
    • Mention applications
14. 7 Marks
    bDraw the logical diagram of electrochemical machining, and describe the procedure, working principle, advantages and limitations of the process.
    How to answer

    • Draw logical/block diagram of ECM
    • Explain procedure and working principle
    • List advantages
    • List limitations
15. 7 Marks
    aDefine hot extrusion and cold extrusion process on the basis of surface finish, mechanical properties, material used and machine specification.
    How to answer

    • Define hot extrusion vs cold extrusion
    • Compare surface finish and mechanical properties
    • Compare material used and machine specification
    • Give examples
16. 7 Marks
    bDiscuss the constructional features of a NC machine tool and explain their functions.
    How to answer

    • List main constructional features of NC machine tool
    • Explain bed, spindle, drives, control unit
    • Describe function of each feature
    • Mention feedback and tooling