Lubrication and Lubricants Quiz
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Questions and Answers

What is the function of lubricants?

  • Increase friction and absorb extra heat
  • Accelerate machine wear and tear
  • Promote gas leakage and remove solid combustion products
  • Decrease friction and prevent machine damage (correct)

    • What are the types of lubricants mentioned in the text?

  • Liquid, semisolid, emulsion, solid (correct)
  • Synthetic, organic, inorganic, hybrid
  • Oil-based, water-based, gas-based, chemical-based
  • Monomolecular, multimolecular, polymeric, metallic

    • What is the composition of lubricating oil?

  • 50% base oil and 50% additives
  • 100% base oil (synthetic oil)
  • 70% base oil and 30% emulsifiers
  • 90% base oil (mineral oil) and 10% additives (correct)

    • What is the main purpose of introducing a substance between two moving surfaces of machines?

    <p>To decrease friction</p> Signup and view all the answers

    What is the function of lubricants in relation to heat in machines?

    <p>Act as a coolant by absorbing extra heat</p> Signup and view all the answers

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