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 (D)</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 (C)</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 (C)</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 (D)</p> Signup and view all the answers

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

<p>Seconds (C)</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 (D)</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 (A)</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 (C)</p> Signup and view all the answers

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Fuel Oil Properties and Combustion Analysis PDF

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