FDNY COF P-98 2026-2027 Comprehensive
Frequently Tested Questions With Verified
Multiple Choice and Conceptual Actual 100%
Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. What is the primary function of a suction pump in an oil-burning system?
A. Atomize fuel oil
B. Circulate oil throughout the system
C. Regulate air flow
D. Measure system pressure
Correct answer: B
2. The suction line in a fuel oil tank must be located at least how far from the
bottom of the tank?
A. 2 inches
B. 4 inches
C. 6 inches
D. 12 inches
Correct answer: C
3. Why must the suction line be positioned above the bottom of the tank?
A. To reduce oil pressure
B. To prevent vapor lock
C. To prevent sediment from being absorbed
,D. To improve atomization
Correct answer: C
4. What is the purpose of a vacuum gauge in an oil-burning system?
A. To measure oil temperature
B. To measure pressure below atmospheric pressure
C. To regulate fuel flow
D. To measure combustion efficiency
Correct answer: B
5. Excessive vacuum readings usually indicate:
A. Excess air in the system
B. High oil temperature
C. An obstruction in the suction line
D. Proper burner adjustment
Correct answer: C
6. The main fuel valve in an oil burner system is:
A. Manually operated
B. Pneumatically operated
C. Electrically operated
D. Hydraulically operated
Correct answer: C
7. The main fuel valve opens and closes the line leading to the atomizer for:
A. Gas burners only
B. Oil burners only
C. Dual-fuel burners only
,D. All burner types
Correct answer: B
8. The two principal elements of fuel oil are:
A. Oxygen and nitrogen
B. Carbon and sulfur
C. Carbon and hydrogen
D. Hydrogen and oxygen
Correct answer: C
9. Approximately what percentage of fuel oil is carbon?
A. 65%
B. 75%
C. 85%
D. 95%
Correct answer: C
10. The hydrogen content of fuel oil is approximately:
A. 5%
B. 10%
C. 14%
D. 20%
Correct answer: C
11. Air that contacts the oil prior to leaving the nozzle is known as:
A. Excess air
B. Secondary air
C. Primary air
, D. Draft air
Correct answer: C
12. Air introduced into the combustion chamber after the oil leaves the nozzle is
called:
A. Primary air
B. Secondary air
C. Forced air
D. Residual air
Correct answer: B
13. Approximately how much air is required to burn one gallon of oil?
A. 500 cubic feet
B. 1,000 cubic feet
C. 2,000 cubic feet
D. 5,000 cubic feet
Correct answer: C
14. During combustion, one part of carbon unites with two parts of oxygen to
produce:
A. Carbon monoxide (CO)
B. Carbon dioxide (CO₂)
C. Sulfur dioxide (SO₂)
D. Nitrogen oxide (NOx)
Correct answer: B
15. How much heat is liberated when one pound of carbon is burned?
Frequently Tested Questions With Verified
Multiple Choice and Conceptual Actual 100%
Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. What is the primary function of a suction pump in an oil-burning system?
A. Atomize fuel oil
B. Circulate oil throughout the system
C. Regulate air flow
D. Measure system pressure
Correct answer: B
2. The suction line in a fuel oil tank must be located at least how far from the
bottom of the tank?
A. 2 inches
B. 4 inches
C. 6 inches
D. 12 inches
Correct answer: C
3. Why must the suction line be positioned above the bottom of the tank?
A. To reduce oil pressure
B. To prevent vapor lock
C. To prevent sediment from being absorbed
,D. To improve atomization
Correct answer: C
4. What is the purpose of a vacuum gauge in an oil-burning system?
A. To measure oil temperature
B. To measure pressure below atmospheric pressure
C. To regulate fuel flow
D. To measure combustion efficiency
Correct answer: B
5. Excessive vacuum readings usually indicate:
A. Excess air in the system
B. High oil temperature
C. An obstruction in the suction line
D. Proper burner adjustment
Correct answer: C
6. The main fuel valve in an oil burner system is:
A. Manually operated
B. Pneumatically operated
C. Electrically operated
D. Hydraulically operated
Correct answer: C
7. The main fuel valve opens and closes the line leading to the atomizer for:
A. Gas burners only
B. Oil burners only
C. Dual-fuel burners only
,D. All burner types
Correct answer: B
8. The two principal elements of fuel oil are:
A. Oxygen and nitrogen
B. Carbon and sulfur
C. Carbon and hydrogen
D. Hydrogen and oxygen
Correct answer: C
9. Approximately what percentage of fuel oil is carbon?
A. 65%
B. 75%
C. 85%
D. 95%
Correct answer: C
10. The hydrogen content of fuel oil is approximately:
A. 5%
B. 10%
C. 14%
D. 20%
Correct answer: C
11. Air that contacts the oil prior to leaving the nozzle is known as:
A. Excess air
B. Secondary air
C. Primary air
, D. Draft air
Correct answer: C
12. Air introduced into the combustion chamber after the oil leaves the nozzle is
called:
A. Primary air
B. Secondary air
C. Forced air
D. Residual air
Correct answer: B
13. Approximately how much air is required to burn one gallon of oil?
A. 500 cubic feet
B. 1,000 cubic feet
C. 2,000 cubic feet
D. 5,000 cubic feet
Correct answer: C
14. During combustion, one part of carbon unites with two parts of oxygen to
produce:
A. Carbon monoxide (CO)
B. Carbon dioxide (CO₂)
C. Sulfur dioxide (SO₂)
D. Nitrogen oxide (NOx)
Correct answer: B
15. How much heat is liberated when one pound of carbon is burned?
