Fuel Oil Properties and Combustion Quiz
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Questions and Answers

Which grade of fuel oil is specified mainly by viscosity?

  • Grade No. 4
  • Grade No. 6 (correct)
  • Grade No. 1
  • Grade No. 2

    • What is the pour point of Grade No. 2 fuel oil?

  • Below -18°C
  • -12°C
  • -1°C (correct)
  • 18°C

    • What is the specific gravity of Grade No. 4 fuel oil at 15.5°C?

  • 0.9279 (correct)
  • 0.8251
  • 0.9529
  • 0.8654

    • Which of the following is a method to measure viscosity?

    <p>Using a viscosimeter</p> Signup and view all the answers

    What is the pour point of a fuel oil?

    <p>The lowest temperature at which the oil will flow</p> Signup and view all the answers

    What does the specific gravity of fuel oils indicate?

    <p>The ratio of the density of the oil to the density of water at a specific temperature</p> Signup and view all the answers

    What is the API gravity of a fuel oil?

    <p>An API gravity at 15.5°C for each product</p> Signup and view all the answers

    Based on the given fuel oil analysis, what is the mass of oxygen required for combustion per kg of fuel?

    <p>3.29 kg</p> Signup and view all the answers

    What is the theoretical air required for combustion per kg of fuel oil, considering the composition of air to be 23% oxygen by mass?

    <p>14.78 kg air/kg fuel oil</p> Signup and view all the answers

    What is the mass of dry flue gas produced per kg of fuel oil, if 50% excess air is supplied?

    <p>21.91 kg dry flue gas/kg fuel</p> Signup and view all the answers

    What is the mass of dry flue gas produced per kg of fuel oil, considering the amount of nitrogen in the air and the amount of oxygen in the flue gas?

    <p>21.91 kg dry flue gas/kg fuel</p> Signup and view all the answers

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