1|Page
GAS CFESA PRACTICE TEST ACTUAL
2025 WITH 100 QUESTIONS AND
CORRECT ANSWERS | ALREADY
GRADED A+ | GUARANTEED PASS |
GAS CFESA FINAL LATEST VERSION
2025 [BRAND NEW!!]
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 -
CORRECT ANSWER ✔✔- A
A running pressure measurement will tell you if you have sufficient gas _______
to allow the gas
fired equipment to operate properly.
A) No load pressure
B) Volume
C) Pressure and volume
D) Gas flow - CORRECT ANSWER ✔✔- C
The minimum incoming gas pressure, before a gas pressure regulator, must be
_______.
,2|Page
A) The operating pressure rating on the equipment data plate
B) Determines by the utility company
C) At least 1 in w.c. above the required operating pressure
D) At least 5 in w.c. above the required operating pressure - CORRECT ANSWER
✔✔- C
To properly take a gas pressure reading on a piece of gas fired equipment all of the
burners ___?
A) Should be turned off
B) Must be clean
C) Must be set to a bypass flame height
D) Must be turned full on - CORRECT ANSWER ✔✔- D
What is a Manometer and in what units is it calibrated?
A) A pressure gauge calibrated in psi
B) A pressure testing instrument calibrated in ft. w.c.
C) A pressure testing instrument calibrated in inches w.c.
D) A glass tube filled with alcohol to measure gas pressure in psi - CORRECT
ANSWER ✔✔- C
An orifice opening in a natural gas orifice is _____ an orifice opening in an LP
orifice of the same
rating:
A) Smaller than
B) Same as
C) Larger than
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D) Varies by manufacturer - CORRECT ANSWER ✔✔- C
Clem is out servicing a special processing oven connected to natural gas, and using
a hot surface
glow coil ignitor. The customer claims that the oven does not heat up very long
before it cuts
out. Clem has checked the gas pressure under load, the voltage under load, the
polarity of the
lines, the amp draw of the glow coil, and after removing the glow coil checked its
resistance
which seemed OK. What did Clem do wrong?
A) The voltage needed to be checked using only a digital voltmeter because of the
electronics
in the circuit
B) The gas pressure also needed to be taken without a load
C) The polarity could not have had anything to do with the problem
D) The glow coil needed to be ohmed out while it was hot to show up any possible
cracks in the
ceramic - CORRECT ANSWER ✔✔- C
Joe's diner has a millivolt operated gas fired deep fryer. The pilot goes out from
time to time.
Sally tech has taken the following reading from the fryer with her meter connected
under load.
Thermopile output 300 MV with the fryer operating at 350* degrees F. There is no
apparent
make up or exhaust air problems. The most likely problem is ______.
A) A thermopile is breaking down
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B) The gas valve magnet is breaking down
C) The pilot flame is to high
D) The limit thermostat is opening and prematurely breaking the circuit through
the
thermopile - CORRECT ANSWER ✔✔- A
A Keating fryer has a pilot valve that is locked into the circuit through a mercury
vapor switch.
The pilot will not stay lit when the momentary switch is released indicating that the
mercury
switch contacts are not closing. Before changing the switch Joe should do which of
the
following?
A) Make sure that sensor is in the outer most part of the pilot flame
B) Make sure that the tip of the sensor is being heated cherry red by the pilot flame
C) Check to ensure that the gas pressure is not too low
D) Make sure that the sensor is positioned away from the direct pilot flames so that
it does not
overheat - CORRECT ANSWER ✔✔- B
Cliff's seafood restaurant has been closed all day due to a broken gas main in the
neighborhood
leaving them without gas. The utility company just called and told them the gas is
back on. Cliff
turns on his fryers and they all lock out. He turns them off and then back on again
and the same
thing happens. He calls Tom tech and explains the situation. What should Tom do?
Cliff is two
GAS CFESA PRACTICE TEST ACTUAL
2025 WITH 100 QUESTIONS AND
CORRECT ANSWERS | ALREADY
GRADED A+ | GUARANTEED PASS |
GAS CFESA FINAL LATEST VERSION
2025 [BRAND NEW!!]
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 -
CORRECT ANSWER ✔✔- A
A running pressure measurement will tell you if you have sufficient gas _______
to allow the gas
fired equipment to operate properly.
A) No load pressure
B) Volume
C) Pressure and volume
D) Gas flow - CORRECT ANSWER ✔✔- C
The minimum incoming gas pressure, before a gas pressure regulator, must be
_______.
,2|Page
A) The operating pressure rating on the equipment data plate
B) Determines by the utility company
C) At least 1 in w.c. above the required operating pressure
D) At least 5 in w.c. above the required operating pressure - CORRECT ANSWER
✔✔- C
To properly take a gas pressure reading on a piece of gas fired equipment all of the
burners ___?
A) Should be turned off
B) Must be clean
C) Must be set to a bypass flame height
D) Must be turned full on - CORRECT ANSWER ✔✔- D
What is a Manometer and in what units is it calibrated?
A) A pressure gauge calibrated in psi
B) A pressure testing instrument calibrated in ft. w.c.
C) A pressure testing instrument calibrated in inches w.c.
D) A glass tube filled with alcohol to measure gas pressure in psi - CORRECT
ANSWER ✔✔- C
An orifice opening in a natural gas orifice is _____ an orifice opening in an LP
orifice of the same
rating:
A) Smaller than
B) Same as
C) Larger than
,3|Page
D) Varies by manufacturer - CORRECT ANSWER ✔✔- C
Clem is out servicing a special processing oven connected to natural gas, and using
a hot surface
glow coil ignitor. The customer claims that the oven does not heat up very long
before it cuts
out. Clem has checked the gas pressure under load, the voltage under load, the
polarity of the
lines, the amp draw of the glow coil, and after removing the glow coil checked its
resistance
which seemed OK. What did Clem do wrong?
A) The voltage needed to be checked using only a digital voltmeter because of the
electronics
in the circuit
B) The gas pressure also needed to be taken without a load
C) The polarity could not have had anything to do with the problem
D) The glow coil needed to be ohmed out while it was hot to show up any possible
cracks in the
ceramic - CORRECT ANSWER ✔✔- C
Joe's diner has a millivolt operated gas fired deep fryer. The pilot goes out from
time to time.
Sally tech has taken the following reading from the fryer with her meter connected
under load.
Thermopile output 300 MV with the fryer operating at 350* degrees F. There is no
apparent
make up or exhaust air problems. The most likely problem is ______.
A) A thermopile is breaking down
, 4|Page
B) The gas valve magnet is breaking down
C) The pilot flame is to high
D) The limit thermostat is opening and prematurely breaking the circuit through
the
thermopile - CORRECT ANSWER ✔✔- A
A Keating fryer has a pilot valve that is locked into the circuit through a mercury
vapor switch.
The pilot will not stay lit when the momentary switch is released indicating that the
mercury
switch contacts are not closing. Before changing the switch Joe should do which of
the
following?
A) Make sure that sensor is in the outer most part of the pilot flame
B) Make sure that the tip of the sensor is being heated cherry red by the pilot flame
C) Check to ensure that the gas pressure is not too low
D) Make sure that the sensor is positioned away from the direct pilot flames so that
it does not
overheat - CORRECT ANSWER ✔✔- B
Cliff's seafood restaurant has been closed all day due to a broken gas main in the
neighborhood
leaving them without gas. The utility company just called and told them the gas is
back on. Cliff
turns on his fryers and they all lock out. He turns them off and then back on again
and the same
thing happens. He calls Tom tech and explains the situation. What should Tom do?
Cliff is two
