Skip to content
EndsemMay 20252019 patternSE Mech

Engineering Materials & Metallurgy (EMM) SPPU Endsem Question Paper May 2025

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated EMM questions
Subject code
202044
Pattern
2019 pattern
Exam
Endsem
Session
May 2025
Max. marks
70
Time
2½ Hours
Semester
III
Paper code
[6402]-122

Printed for: S.E. (Mechanical/Automobile/Mechanical S/w/ Automation & Robotics)

Instructions to the candidates

  1. Answers Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
  2. Figures to the right indicate full marks.
  3. Use Graph paper for graphical solution.
  4. Use of electronic pocket calculator is allowed.
  5. Assume suitable data, if necessary.

Questions

  1. Q1

    1. a)

      With neat labels draw Iron-Iron Carbide equilibrium diagram.

      Also asked:Nov 2023 ·May 2023

      [6]
    2. b)

      Briefly describe the phenomenon of coring and why it occurs. Discuss undesirable consequence of coring.

      [6]
    3. c)

      Draw a self-explanatory cooling curves for i) Binary Solid Solution Alloys ii) Binary Eutectic Alloys

      [6]

  2. Q2

    1. a)

      Define Phase, System and Solid Solution? Give metallurgical example of each?

      [6]
    2. b)

      With phase transformation mention critical temperature in Iron-Carbon equilibrium diagram.

      Also asked:May 2023

      [6]
    3. c)

      State Gibbs Phase rule? List application and Limitation of Gibbs Phase rule?

      Also asked:May 2023

      [6]

  3. Q3

    1. a)

      Explain the austenite to pearlite transformation with a suitable sketch.

      Also asked:Nov 2023

      [6]
    2. b)

      With the help of neat sketch explain flame hardening process. Also state its application.

      [6]
    3. c)

      Define Annealing Process? List advantages of annealing process? Gives type of Annealing with use of them? 2

      [5]

  4. Q4

    1. a)

      Draw time temperature transformation diagram.

      [6]
    2. b)

      Explain Martempering process with a neat sketch. Also state the advantages and disadvantages of it.

      [6]
    3. c)

      What is retain austenite. List advantages and limitation of retain austenite.

      [5]

  5. Q5

    1. a)

      Examine the effect of alloying element on alloy steel? Give suitable example?

      Also asked:Nov 2023

      [6]
    2. b)

      Define Cast Iron? State the classification of cast iron. What are the advantages of cast iron over steels?

      [6]
    3. c)

      Explain need of Designation of Steel? State the composition of the following steel which is specified as per SAE Designation System: i) 1018 ii) 1340 iii) 4340

      [5]

  6. Q6

    1. a)

      With neat diagram explain term sensitization of stainless steel? How to avoid sensitization of stainless steel?

      [6]
    2. b)

      Draw the microstructure of Grey Cast Iron, White Cast Iron and Nodular Cast Iron.

      Also asked:Nov 2025 ·Nov 2023 ·May 2023

      [6]
    3. c)

      What is SAE designation of materials? Explain in detail with two examples.

      [5]

  7. Q7

    1. a)

      Suggest suitable non-ferrous material for the following applications and write its composition and properties. i) Bells ii) Bullet envelopes iii) Measuring tapes

      [6]
    2. b)

      Write short note on Age Hardening? What are advantage and disadvantage of age hardening?

      [6]
    3. c)

      Differentiate between Ferrous and Non-ferrous Materials considering industrial application and Mechanical properties?

      [6]

  8. Q8

    1. a)

      Write a short note on (Composition, Properties and Applications): i) Alnico ii) Y-Alloy

      [6]
    2. b)

      List Essential Properties of Bearing Materials? Suggest Bearing material for Food Processing & Heavy-duty applications in aircrafts.

      [6]
    3. c)

      What is Additive Manufacturing? Explain required properties of additive manufacturing materials? List any two additive manufacturing materials? … … …

      [6]