GAS CFESA TEST (ACTUAL TEST 2025/2026 | ACTUAL
COMPLETE ALL 100 REAL EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS ) |
ALREADY GRADED A+ | LATEST EXAM .
The normal operating pressure of LP gas is_____?
A) 10-15 psi
B) 3-7 psi
C) 10-11 in WC"
D) 3-7 in WC" - ANSWER-C
The normal operating pressure of a typical natural gas
type burner is approximately: A) 15-25 psi
B) 3-4 psi
C) 10-11 in WC"
D) 3.5-7 in WC" - ANSWER-D
Make up air is:
A) The air that enters the venture of the burner
B) The air that mixes with the gas at the burner ports
C) The air that enters the room from the outside
D) The air that is taken out through the vent - ANSWER-C
LP gas, at the appliance, is_______?
,A) Heavier than air
B) Light yellow
C) Lighter than air
D) Odorless - ANSWER-A
Ideally to burn one cubic foot of LP gas approximately______
cubic feet of air is required. A) 100
B) 24
C) 10
D) 44 - ANSWER-B
Natural gas coming out of a gas line piped into a building is:
A) Heavier than air
B) Light yellow
C) Lighter than air
D) Odorless - ANSWER-C
Ideally 100 cubic feet of natural gas is burned,
approximately______ feet of air is required for proper
combustion.
A) 100
B) 500
C) 1000
D) 6000 - ANSWER-C
,The amount of BTU's that can be produced from one cubic foot
of LP gas is approximately_____?
A) 10,000
B) 25,000
C) 2,500
D) 1000 - ANSWER-C
To help detect leaks,_____ is added to natural gas.
A) Dye
B) Oil
C) Odorant
D) Oxygen - ANSWER-C
Table C-2 of the National Fuel Gas code book shows the
equivalent length of pipe for fittings.
When is this table used?
A) On every gas pipping system
B) When more than normal amount of fittings are used
C) Only when the gas line runs vertically
D) On long gas runs - ANSWER-A
A 3/4 elbow is equivalent to how long a pipe?
A) 2 feet
B) 1 foot
C) 3 feet
, D) 4 feet - ANSWER-A
Infrared burners are extremely sensitive to:
A) Secondary air
B) Combustible surface clearance
C) Hydrogen in the gas supply
D) Gas pressure. - ANSWER-D
One PSI equals
approximately: A) 1" w.c.
B) 1 them
C) 1" mercury column
D) 27.7 in w.c. - ANSWER-D
To select the proper burner orifice size you need to know the
BTU rating of the burner, the number orifices per burner,
and_____.
A) The gas pressure and gas type
B) The pipe size, and gas type
C) The gas pressure, and pipe size
D) The gas type, gas pressure, and altitude of the location -
ANSWER-D
A BJ thermostat will be ruined permanently if not adjusted
properly. To make an adjustment you must:
COMPLETE ALL 100 REAL EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS ) |
ALREADY GRADED A+ | LATEST EXAM .
The normal operating pressure of LP gas is_____?
A) 10-15 psi
B) 3-7 psi
C) 10-11 in WC"
D) 3-7 in WC" - ANSWER-C
The normal operating pressure of a typical natural gas
type burner is approximately: A) 15-25 psi
B) 3-4 psi
C) 10-11 in WC"
D) 3.5-7 in WC" - ANSWER-D
Make up air is:
A) The air that enters the venture of the burner
B) The air that mixes with the gas at the burner ports
C) The air that enters the room from the outside
D) The air that is taken out through the vent - ANSWER-C
LP gas, at the appliance, is_______?
,A) Heavier than air
B) Light yellow
C) Lighter than air
D) Odorless - ANSWER-A
Ideally to burn one cubic foot of LP gas approximately______
cubic feet of air is required. A) 100
B) 24
C) 10
D) 44 - ANSWER-B
Natural gas coming out of a gas line piped into a building is:
A) Heavier than air
B) Light yellow
C) Lighter than air
D) Odorless - ANSWER-C
Ideally 100 cubic feet of natural gas is burned,
approximately______ feet of air is required for proper
combustion.
A) 100
B) 500
C) 1000
D) 6000 - ANSWER-C
,The amount of BTU's that can be produced from one cubic foot
of LP gas is approximately_____?
A) 10,000
B) 25,000
C) 2,500
D) 1000 - ANSWER-C
To help detect leaks,_____ is added to natural gas.
A) Dye
B) Oil
C) Odorant
D) Oxygen - ANSWER-C
Table C-2 of the National Fuel Gas code book shows the
equivalent length of pipe for fittings.
When is this table used?
A) On every gas pipping system
B) When more than normal amount of fittings are used
C) Only when the gas line runs vertically
D) On long gas runs - ANSWER-A
A 3/4 elbow is equivalent to how long a pipe?
A) 2 feet
B) 1 foot
C) 3 feet
, D) 4 feet - ANSWER-A
Infrared burners are extremely sensitive to:
A) Secondary air
B) Combustible surface clearance
C) Hydrogen in the gas supply
D) Gas pressure. - ANSWER-D
One PSI equals
approximately: A) 1" w.c.
B) 1 them
C) 1" mercury column
D) 27.7 in w.c. - ANSWER-D
To select the proper burner orifice size you need to know the
BTU rating of the burner, the number orifices per burner,
and_____.
A) The gas pressure and gas type
B) The pipe size, and gas type
C) The gas pressure, and pipe size
D) The gas type, gas pressure, and altitude of the location -
ANSWER-D
A BJ thermostat will be ruined permanently if not adjusted
properly. To make an adjustment you must:
