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InsemOct 20252019 patternSE Mech

Engineering Materials & Metallurgy (EMM) SPPU Insem Question Paper Oct 2025

All 4 questions from this SPPU insem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated EMM questions
Subject code
202044
Pattern
2019 pattern
Exam
Insem
Session
Oct 2025
Max. marks
30
Time
1Hour
Semester
III
Paper code
[6578]-62

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

Instructions to the candidates

  1. Answer Q1 or Q2, Q3 or Q4.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right indicate full marks.
  4. Assume Suitable data if necessary.
  5. Use of electronic pocket calculator is allowed.

Questions

  1. Q1

    1. a)

      What is dislocation? Compare between edge and screw dislocation.

      [6]
    2. b)

      What are Bravais Lattices? Draw the following planes in cubic crystal system (101), (222), (011), (001)

      [9]

  2. Q2

    1. a)

      What is work hardening? Explain it on the basis of dislocation theory.

      [7]
    2. b)

      What is fatigue failure? Enlist the factors necessary to cause fatigue failure. Explain fatigue testing process in detail.

      [8]

  3. Q3

    1. a)

      Compare between Brinell, Vicker’s and Rockwell hardness testing methods.

      [6]
    2. b)

      What do you mean by non-destructive testing? Enlist the NDT methods. Explain ultrasonic method of testing.

      Also asked:Oct 2023

      [9]

  4. Q4

    1. a)

      Compare between Optical and scanning electron microscopy on the basis of following points: block diagram, working principle, ‘imaging’ process, magnification, use & disadvantages.

      Also asked:Oct 2023

      [7]
    2. b)

      What is difference between Microscopy and Macroscopy? With the help of neat sketch explain the difference in flow lines observed in forged components and cast components. b b b

      [8]