ME-305 Manufacturing Process - Dec 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
   aDescribe the die casting process with suitable sketches. Also Compare hot-chamber and cold-chamber die casting.
   How to answer

   • Define die casting and its principle
   • Steps of hot-chamber and cold-chamber processes with sketches
   • Comparison table: working, metals, pressure, applications
   • Advantages, limitations and typical products
2. 7 Marks
   bExplain molding sand. Discuss the types of molding sand used in foundry practice.
   How to answer

   • Definition and constituents of molding sand
   • Properties required in foundry sand
   • Types: green sand, dry sand, loam, facing, backing, system, core sand
   • Applications in foundry practice
3. 7 Marks
   aExplain different types of flames used in gas welding. State their characteristics and applications.
   How to answer

   • Principle of oxy-acetylene gas welding flame
   • Neutral, oxidising and carburising/reducing flames - ratio and structure
   • Characteristics: temperature, appearance, inner cone
   • Applications for different metals
4. 7 Marks
   bExplain the Thermit welding process with neat sketches.
   How to answer

   • Principle of thermit chemical reaction
   • Equipment: crucible, mould, thermit mixture
   • Steps with neat sketch
   • Applications e.g. rail welding
5. 7 Marks
   aDescribe the applications of forged components in automobile and aerospace industries.
   How to answer

   • Need for high strength forged parts
   • Automobile examples: crankshaft, connecting rod, gears, axles
   • Aerospace examples: turbine discs, landing gear, structural fittings
   • Benefits: grain flow, fatigue strength
6. 7 Marks
   bDefine forging. Explain various forging operations with neat sketches.
   How to answer

   • Definition of forging as plastic deformation
   • Operations: upsetting, drawing out, bending, punching, extrusion
   • Sketches of each operation
   • Open-die vs closed-die context
7. 7 Marks
   aDescribe the process of bending and drawing in press working. Give examples of products made using these processes.
   How to answer

   • Principle of bending: V-bending, edge bending, springback
   • Principle of drawing: blank holding, punch-draw into die
   • Process parameters and defects
   • Product examples for each
8. 7 Marks
   bExplain the construction and working of a hydraulic press.
   How to answer

   • Pascal's law basis for hydraulic press
   • Components: cylinder, piston, frame, pump, valves
   • Working cycle with diagram
   • Capacity and applications
9. 7 Marks
   aDefine grinding. Also discuss the dressing and truing of grinding wheels.
   How to answer

   • Definition of grinding as abrasive machining
   • Purpose of dressing vs truing
   • Tools and procedure for each
   • Effect on wheel performance
10. 7 Marks
    bExplain the working principle of a planer machine with a neat sketch.
    How to answer

    • Construction: bed, table, column, tool head
    • Working principle: reciprocating table, cutting in forward stroke
    • Drive mechanism with sketch
    • Applications and limitations
11. 7 Marks
    aExplain the working principle of a lathe machine with a neat sketch.
    How to answer

    • Main parts: bed, headstock, tailstock, carriage
    • Working: workpiece rotation, tool feed
    • Sketch with labels
    • Operations possible
12. 7 Marks
    bWhat are the various types of safety devices used in press working? Explain their importance.
    How to answer

    • Need for safety in press working
    • Devices: fixed guards, photoelectric, two-hand control, pull-out
    • Working of each device
    • Importance in accident prevention
13. 7 Marks
    aDescribe the process of shearing in press working. Explain the factors affecting shearing force in press operations.
    How to answer

    • Shearing stages: plastic deformation, penetration, fracture
    • Punch-die clearance action
    • Factors: clearance, sheet thickness, strength, lubrication
    • Formula for shearing force
14. 7 Marks
    bDescribe the use of cores in pattern design. Also discuss the factors affecting pattern design.
    How to answer

    • Purpose of cores for internal cavities
    • Core prints and setting in pattern
    • Factors: draft, shrinkage, machining, distortion allowances
    • Design considerations for pattern material
15. 7 Marks
    aWhat is a core? Also explain different types of core boxes with neat sketches.
    How to answer

    • Definition of core in foundry
    • Types of core boxes: half, split, dump, strickle
    • Sketches of each box
    • Use for different core shapes
16. 7 Marks
    bDescribe the construction of a cupola furnace with a neat sketch. Also write its application.
    How to answer

    • Construction: stack, tuyeres, charging door, hearth
    • Zones: melting, combustion, preheating with sketch
    • Working and charge materials
    • Application for cast iron melting