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InsemOct 20242019 patternSE Mech

Engineering Materials & Metallurgy (EMM) SPPU Insem Question Paper Oct 2024

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 2024
Max. marks
30
Time
1 Hour
Semester
III
Paper code
[6359]-562

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

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4.
  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 meant by the term Space Lattice? State the condition for the most stable arrangement of atoms in a crystal structure. What is the significance of Bravais lattice?

      [5]
    2. b)

      Draw the plane in a cubic system for the following Miller indices i) (110) ii) (221)

      [6]
    3. c)

      Draw a schematic illustration of a slip in a single crystal and state as to which planes in a crystal structure are likely to undergo slip?

      [4]

  2. Q2

    1. a)

      Why is Annealing done on a cold worked metal? State the changes occurring in the Recovery phase of Annealing with reference to the following parameters i) Microstructure ii) Mechanical properties iii) Changes in internal stresses and corrosion resistance.

      [5]
    2. b)

      Draw a neat sketch of a Burger’s vector and Burger’s circuit for an Edge dislocation. What does Burger’s vector indicate?

      [6]
    3. c)

      What is meant by Fatigue failure? State the significance of Beach marks. 2

      [4]

  3. Q3

    1. a)

      Which property of a material is tested using the cupping test? Draw a schematic sketch to demonstrate the principle of working of the test?

      [7]
    2. b)

      State the principle of Ultrasonic Inspection. State any two applications of Ultrasonic Inspection method.

      [4]
    3. c)

      What is the purpose of Spark Test? What is meant by the terms Carrier lines and spurts associated with Spark Test?

      [4]

  4. Q4

    1. a)

      What is the role of X ray in testing components manufactured by Casting or welding? State the principle of working of X-ray radiography.

      [4]
    2. b)

      Write any two points which need to be taken care of in the procedure of Sampling during specimen preparation for microscopy. What happens when an etching reagent is applied on a polished surface?

      [4]
    3. c)

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

      [7]