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EndsemMay 20242019 patternSE Mech

Engineering Materials & Metallurgy (EMM) SPPU Endsem Question Paper May 2024

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 2024
Max. marks
70
Time
2½ Hours
Semester
III
Paper code
[6261]-127

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

Instructions to the candidates

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

Questions

  1. Q1

    1. a)

      What is solid solution? Explain substitutional & interstitial solid solution? Explain Hume-Rothery's rule for solid solubility?

      Also asked:Nov 2023

      [10]
    2. b)

      What is nucleation? What are its types? Explain solidification of pure metal?

      [7]

  2. Q2

    1. a)

      Draw the cooling curves & show the application of Gibbs phase rule in each region. i) Pure metal ii) Binary solid solution alloy iii) Binary Eutectic alloy iv) Off-eutectic binary alloy

      [8]
    2. b)

      Draw neat labelled Iron - Iron carbide equilibrium diagram & write 3 transformation reactions in it?

      [9]

  3. Q3

    1. a)

      What are the various transformation products of austenite? Explain any one in detail with respect to transformation mechanism, temperature, characteristics and structure? Arrange the transformation products in descending order with respect to hardness

      [9]
    2. b)

      What is retained austenite? What are its effects? Differentiate between TTT & CCT curve? 2

      [9]

  4. Q4

    1. a)

      What is hardenability? Which test is used to find it? Explain the test in detail? Enlist Surface hardening heat treatments?

      [9]
    2. b)

      Differentiate between : i) Annealing & Normalizing ii) Austempering & Martempering iii) Induction hardening & Flame hardening

      [9]

  5. Q5

    1. a)

      This part has equations that don’t show as text. Open the PDF to read it.

      [8]
    2. b)

      What is stainless steel? Classify it with application? Explain sensitization of stainless steel?

      [9]

  6. Q6

    1. a)

      What is Cast Iron? Enlist its important properties & applications? Write composition, properties & application of gray cast Iron?

      [9]
    2. b)

      Draw the microstructure of i) Nodular cast iron ii) Gray cast iron iii) Malleable cast iron iv) White cast iron 3

      [8]

  7. Q7

    1. a)

      Suggest suitable nonferrous material for the following. Give typical composition of it. i) Cartridge case ii) Measuring Tape iii) Gun Barrel iv) Coins v) Bell

      [10]
    2. b)

      What is Additive Manufacturing? What are the advantages of it over conventional manufacturing? Give the properties, composition & application of any two materials used for it.

      [8]

  8. Q8

    1. a)

      What is Age Hardening? Explain steps involved in it? Which are the factors influencing aging process?

      [9]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [9]