Mechanical Engineering Unit II & III Quiz
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Questions and Answers

What is a common effect of boiler corrosion?

  • Improved fuel consumption
  • Decreased life span of the boiler (correct)
  • Enhanced water treatment processes
  • Increased thermal efficiency
  • Which method is primarily used for softening hard water by ion exchange?

  • Caustic soda process
  • Lime soda method
  • Zeolite method (correct)
  • Reverse osmosis
  • Which of the following substances is primarily associated with caustic embrittlement in boilers?

  • Magnesium sulfate
  • Calcium carbonate
  • Sodium chloride
  • Sodium hydroxide (correct)
  • What is the primary purpose of using the Pensky-Martens apparatus?

    <p>Determining flash and fire points of liquids</p> Signup and view all the answers

    Which two lubrications differ primarily in how they separate moving parts?

    <p>Boundary and hydrodynamic lubrication</p> Signup and view all the answers

    In calculating the amount of lime required for softening water, which chemical compound's concentration plays a crucial role?

    <p>Calcium carbonate</p> Signup and view all the answers

    Study Notes

    Unit II

    • Assignment Topics: Boiler Corrosion and Caustic Embrittlement
    • Comparative Analysis: Zeolite and Lime Soda methods for water softening

    Unit III

    • Assignment Topics: Hydrodynamic and Boundary Lubrication
    • Testing and Significance: Aniline point and SEN testing
    • Lubricant Properties: Lubricant classification, mode of action examples, and uses

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    Description

    Test your knowledge on Boiler Corrosion, Caustic Embrittlement, and various water softening methods like Zeolite and Lime Soda. Additionally, explore hydrodynamic and boundary lubrication, lubricant properties, and the significance of tests such as the Aniline point and SEN testing.

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