GAS CFESA PRACTICE TEST EXAM
UPDATED QUESTIONS AND CORRECT
ANSWERS.
The purpose of a draft hood/draft diverter is_______?
A) To prevent drafts from entering the burner compartment that comes from the power cent
hoods.
B) To prevent the combustion chamber from overheating, and allowing air to come down the
vent pipe into the room.
C) To allow the flue to control the amount of secondary air drawn in instead of the vent pipe,
and to prevent air from coming back down the vent into the combustion chamber
D) To allow the vent pipe to control the amount of secondary air drawn into the combustion
chamber as designed by its height above the hood. - ANS C
The two primary functions of the flue are____?
A) The remove combustion byproducts and heat from the equipment
B) To create a draft to pull in secondary air and remove the byproducts form the combustion
chamber
C) To create a draft to keep the burners cool and remove byproducts from the cooking area
D) To remove the excessive heat to keep the burners, and cooking surface from overheating -
ANS B
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,To solve unusual venting problems like negative pressure, high winds, long vents, the installe
should use_____?
A) A larger size vent pipe
B) Vent outlets
C) Vent top turbines
D) A draft hood - ANS D
What is a bypass flame?
A) The smallest flame that will keep the burners lit after the gas thermostat has reached the
temperature set point
B) A flame that is 3/8" tall after the thermostat shuts off
C) A flame left on the burner to keep the pilot form going out
D) A flame to a special part of the burner after the main burner goes off - ANS A
The primary purpose of a vent on a regulator is to:
A) Vent leaking gas
B) Allow diaphragm movement
C) Allow high pressure
D) Monitor flow - ANS B
A properly burning infrared ceramic burner will look______?
A) Blue
B) Bright reddish orange
C) Dull red
D) Blue with a tint of orange - ANS B
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Vent lines are required on regulators above 1" and must be vented:
A) A pilot flame
B) An open flame within 2 feet
C) A working flue or exhaust system
D) The outside atmosphere, above the snow line - ANS D
What is the proper flame current for an ignition module?
A) Always 3 or more microamps
B) Always ¼ or more microamps
C) It depends on the module manufacturer
D) Always 2 or more microamps - ANS C
Primary air is the air______?
A) That surrounds the burner
B) That enters the burner though the venture
C) Is the air that is vented through the exhaust system
D) That must always have a pressure greater than the incoming gas pressure - ANS B
Every time a gas fired convection oven shuts off the gas flow to the burners there is a loud pop.
The oven is rated for and using LP gas. The noise is called_____, and can be reduced by____ the
burner air shutters more.
A) Extinction pop, opening
B) Delayed ignition, closing
C) Delayed ignition, opening
D) Extinction pop and by closing - ANS D
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
UPDATED QUESTIONS AND CORRECT
ANSWERS.
The purpose of a draft hood/draft diverter is_______?
A) To prevent drafts from entering the burner compartment that comes from the power cent
hoods.
B) To prevent the combustion chamber from overheating, and allowing air to come down the
vent pipe into the room.
C) To allow the flue to control the amount of secondary air drawn in instead of the vent pipe,
and to prevent air from coming back down the vent into the combustion chamber
D) To allow the vent pipe to control the amount of secondary air drawn into the combustion
chamber as designed by its height above the hood. - ANS C
The two primary functions of the flue are____?
A) The remove combustion byproducts and heat from the equipment
B) To create a draft to pull in secondary air and remove the byproducts form the combustion
chamber
C) To create a draft to keep the burners cool and remove byproducts from the cooking area
D) To remove the excessive heat to keep the burners, and cooking surface from overheating -
ANS B
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,To solve unusual venting problems like negative pressure, high winds, long vents, the installe
should use_____?
A) A larger size vent pipe
B) Vent outlets
C) Vent top turbines
D) A draft hood - ANS D
What is a bypass flame?
A) The smallest flame that will keep the burners lit after the gas thermostat has reached the
temperature set point
B) A flame that is 3/8" tall after the thermostat shuts off
C) A flame left on the burner to keep the pilot form going out
D) A flame to a special part of the burner after the main burner goes off - ANS A
The primary purpose of a vent on a regulator is to:
A) Vent leaking gas
B) Allow diaphragm movement
C) Allow high pressure
D) Monitor flow - ANS B
A properly burning infrared ceramic burner will look______?
A) Blue
B) Bright reddish orange
C) Dull red
D) Blue with a tint of orange - ANS B
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Vent lines are required on regulators above 1" and must be vented:
A) A pilot flame
B) An open flame within 2 feet
C) A working flue or exhaust system
D) The outside atmosphere, above the snow line - ANS D
What is the proper flame current for an ignition module?
A) Always 3 or more microamps
B) Always ¼ or more microamps
C) It depends on the module manufacturer
D) Always 2 or more microamps - ANS C
Primary air is the air______?
A) That surrounds the burner
B) That enters the burner though the venture
C) Is the air that is vented through the exhaust system
D) That must always have a pressure greater than the incoming gas pressure - ANS B
Every time a gas fired convection oven shuts off the gas flow to the burners there is a loud pop.
The oven is rated for and using LP gas. The noise is called_____, and can be reduced by____ the
burner air shutters more.
A) Extinction pop, opening
B) Delayed ignition, closing
C) Delayed ignition, opening
D) Extinction pop and by closing - ANS D
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
