Mechanical Engineering Fourth Year Exam Marks Distribution
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Questions and Answers

What is the first critical step in failure prevention according to the text?

  • Examine and analyze the material
  • Photographing the failure before destruction
  • Detection and collection of data
  • Selecting appropriate materials (correct)

    • Which method can reveal the depth of hardening, grain size, phase present, and non-metallic inclusions?

  • Properties testing
  • Scanning electron microscope (SEM) (correct)
  • Energy dispersive X-ray spectroscopy (SEM/EDX)
  • Visual examination

    • What may be a cause of failure according to the text?

  • Faulty heat treatments (correct)
  • Correct design
  • Inadequate environmental control
  • Consideration of service environment

    • What is a consideration for selecting appropriate processing according to the text?

    <p>Cold working and forging create cracks, flaws, and distortion</p> Signup and view all the answers

    What can age-hardened materials lose strength at?

    <p>High temperature</p> Signup and view all the answers

    What is the primary focus of failure analysis?

    <p>Determining the root cause of a failure</p> Signup and view all the answers

    Which of the following is NOT an example of a harsh environment that commonly induces failure?

    <p>Low humidity environment</p> Signup and view all the answers

    What are examples of operating conditions that frequently cause material failure?

    <p>Stress, impact, and frictional loading</p> Signup and view all the answers

    What is the main purpose of a failure analysis report?

    <p>To determine the root cause of a failure</p> Signup and view all the answers

    Which chapter covers the topic 'Failure Due to Overload'?

    <p>Chapter (2) Failure Due To Overload</p> Signup and view all the answers

    Environmental conditions are not considered as primary causes leading to a material's failure.

    <p>False</p> Signup and view all the answers

    Stress, impact, and frictional loading are examples of operating conditions that frequently cause material failure.

    <p>True</p> Signup and view all the answers

    Failure analysis is the process of collecting data and analyzing it to determine the root cause of a failure.

    <p>True</p> Signup and view all the answers

    Failure Due To Overload is covered in Chapter (2) of the text.

    <p>True</p> Signup and view all the answers

    Age-hardened materials can lose strength over time.

    <p>True</p> Signup and view all the answers

    Improper material selection can be a cause of failure according to the text.

    <p>True</p> Signup and view all the answers

    Casting can create gas porosity and segregation in the processing of materials.

    <p>True</p> Signup and view all the answers

    Inspecting the failure situation is not a part of the failure analysis procedure.

    <p>False</p> Signup and view all the answers

    Cold working and forging don't create cracks, flaws, or distortion in materials.

    <p>False</p> Signup and view all the answers

    Selecting appropriate materials depends on fatigue conditions, stress-rupture time, and temperature range of operation according to the text.

    <p>True</p> Signup and view all the answers

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