Skip to content
EndsemNov 20252019 patternSE Mech

Engineering Materials & Metallurgy (EMM) SPPU Endsem Question Paper Nov 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
Nov 2025
Max. marks
70
Time
2½ Hours
Semester
III
Paper code
[6582]-127

Printed for: S.E. (Automobile & Mechanical Engineering/Mechanical

Instructions to the candidates

  1. Answer Q1 or Q2, Q3 or Q4, Q.5 or Q.6, Q.7or Q.8
  2. Figures to the right indicate full marks.
  3. Neat diagrams must be draw, wherever necessary.
  4. Assume suitable data if necessary.
  5. Use of Logarithmic tables, slide rule, electronic pocket calculator is allowed.

Questions

  1. Q1

    1. a)

      What is Equilibrium diagram? Explain its significance / importance. Draw equilibrium diagram for binary alloy.

      [8]
    2. b)

      What is solid solution? Explain all the types in detail.

      [9]

  2. Q2

    1. a)

      What do you mean by kinetics of phase transformation? Explain the term - 'Nucleation and Crystal growth' in detail.

      [8]
    2. b)

      Draw iron and iron carbide equilibrium diagram and show the following points: critical temperatures, phases and reactions.

      [9]

  3. Q3

    1. a)

      Explain with neat sketch the austenite to bainite transformation. Compare lower bainite and upper bainite with respect to following points: temperature range, appearance, hardness and diagram.

      [9]
    2. b)

      Explain the process of generation of isothermal transformation diagram? Draw TTT Diagram for Austenite to Martensite Transformation.

      [9]

  4. Q4

    1. a)

      What is Annealing Process? State all types of Annealing Process? How does it carry out for Hypo and Hypereutectoid alloys?

      [9]
    2. b)

      Define hardening process. Show following heat treatments on TTT diagram. i) Conventional hardening. ii) Interrupted quench hardening iii) Martempering iv) Ausforming

      [9]

  5. Q5

    1. a)

      Define Steel. Classify the steel on the basis of : i) Amount of carbon. ii) Amount of alloying elements. iii) De-oxidation.

      [8]
    2. b)

      What are stainless steels? Explain its types in detail.

      [9]

  6. Q6

    1. a)

      Differentiate between Steel & Cast iron. State & explain the types of cast iron.

      [8]
    2. b)

      Differentiate between White & Grey Cast Iron.

      Also asked:May 2025 ·Nov 2023 ·May 2023

      [9]

  7. Q7

    1. a)

      Classify the Copper Alloys. State & explain in detail the types of  brass.

      [9]
    2. b)

      What are the general properties and uses of Nickel. Enlist the Nickel Alloys. Write properties, composition and applications of any two Nickel Alloys.

      [9]

  8. Q8

    1. a)

      Enlist the Bearing Materials. Write properties, composition and applications of any two Bearing Materials.

      [9]
    2. b)

      Explain in detail the process of Age Hardening. 

      [9]