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

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

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

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

  • 0.8251
  • 0.9279 (correct)
  • 0.9529
  • 0.8654

    • Based on the given information, what is the mass of oxygen required for combustion per kilogram of fuel oil?

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

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

    <p>21.91 kg</p> Signup and view all the answers

    What is the mass of air supplied per kilogram of fuel oil if 50% excess air is supplied?

    <p>22.17 kg</p> Signup and view all the answers

    What is the mass of dry flue gas produced per kilogram of fuel oil if 150% excess air is supplied?

    <p>21.91 kg</p> Signup and view all the answers

    Which unit is commonly used to express viscosity in the petroleum industry?

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

    Which fuel oil has a higher specific gravity, No. 4 oil or No. 6 oil?

    <p>No. 6 oil</p> Signup and view all the answers

    What is the formula to convert specific gravity (SPGR) to API gravity?

    <p>Degrees API gravity = (141.5/SPGR at 15.5°C) - 131.5</p> Signup and view all the answers

    What is the theoretical air required for the combustion of fuel oil with the composition of 87% carbon, 12% hydrogen, and 1% sulfur?

    <p>267 kg</p> Signup and view all the answers

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