FDNY COF P-98 EXAM AND PRACTICE EXAM ACTUAL EXAM 275 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A

FDNY COF P-98 EXAM AND PRACTICE EXAM ACTUAL EXAM 275 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A

FDNY COF P-98 EXAM AND PRACTICE EXAM 2026-

2026 ACTUAL EXAM 275 QUESTIONS AND CORRECT

DETAILED ANSWERS (VERIFIED ANSWERS)

|ALREADY GRADED A

What device is designed to shut down the burner system if there is a failure of

ignition or combustion?

Main fuel valve

The ____________ is electrically operated and will open or close the line leading

to the atomizer only for oil burners.

Main fuel valve

Oil circulates through the piping system back to the storage tank through the oil

return line

True

What is provided for safety if the pressure in the oil piping system becomes too

great, or exceeds the recommended manufacturer’s specification?

Pressure relief valves

___________ is stored by the storage tank. It has a oil level gauge which shows the

amount collected.

Leak collector

Combustion is the chemical union of the oxygen in the air with combustible

elements that consists of: (2 answer)

Fuel

Oil

During the combustion process, what percentage of the carbon content of fuel-oil

unites with the oxygen in the air to form carbon dioxide and carbon monoxide?

85%

The hydrogen content of the oil (about 14%) unites with the _________ and

produces water.

Oxygen

An _________ is primarily a device for processing the liquid fuel for combustion

by accelerating the change from liquid to a vapor that can be mixed with air and

burned.

Oil burner

The air that contacts the oil prior to its leaving the nozzle is referred to as:

Primary air

The introduction of air from the blower or fan into the combustion chamber after

the oil has left the nozzle is referred to as:

Secondary air

The mixture of oil and air is sprayed in vapor form into a __________ area where

combustion takes place.

Firebox

____________ is considered as the end product of incomplete combustion. In

addition to being inefficient in the production of heat, the presence of this type of

gas is highly dangerous.

Carbon monoxide

What color would be an indication that a lack of air is present?

Red smoky flame