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GAS CFESA TEST (ACTUAL TEST 2025) | ALL 100 QUESTIONS AND CORRECT ANSWERS | GRADED A+, Exams of Geology

GAS CFESA TEST (ACTUAL TEST 2025) | ALL 100 QUESTIONS AND CORRECT ANSWERS | ALREADY GRADED A+ | LATEST EXAM | VERIFIED ANSWERS

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GAS CFESA TEST (ACTUAL TEST 2025) | ALL
100 QUESTIONS AND CORRECT ANSWERS |
ALREADY GRADED A+ | LATEST EXAM |
VERIFIED ANSWERS
Vern is working on an infrared broiler. It has had a history of burner failure
due to decayed
insulation between the burners and broken ceramic tiles. He checks the
gas pressure and the
pressure is 7" w.c. on natural gas. The most likely cause of the excessive
failure is:
A) Excessive gas pressure
B) Insufficient gas pressure
C) Insufficient secondary air to cool the burners
D) Just a bad batch of burners ---------CORRECT ANSWER-----------------A
A 1 ½" black Iron Gate line running for 50 feet can supply 670 cubic feet of
natural gas per hour,
or approximately 670,000 BTU's. A gas pressure regulator is rated at
800,000 BTU and is 1"
N.P.T. Another regulator is rated at 1,200,000 BTU's and is 1 ½" N.P.T.
Which regulator must you
use?
A) Either will work as they both have the BTU capacity
B) The 1" because it will be much less expensive
C) The 1 ½" because you must maintain pipe size to prevent creating
restrictions
D) Neither would be the right regulator ---------CORRECT ANSWER----------
-------C
A gas pressure regulator is shipped alone with most LP fryers, either
separate or as part of the
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Download GAS CFESA TEST (ACTUAL TEST 2025) | ALL 100 QUESTIONS AND CORRECT ANSWERS | GRADED A+ and more Exams Geology in PDF only on Docsity!

GAS CFESA TEST (ACTUAL TEST 2025 ) | ALL

100 QUESTIONS AND CORRECT ANSWERS |

ALREADY GRADED A+ | LATEST EXAM |

VERIFIED ANSWERS

Vern is working on an infrared broiler. It has had a history of burner failure due to decayed insulation between the burners and broken ceramic tiles. He checks the gas pressure and the pressure is 7" w.c. on natural gas. The most likely cause of the excessive failure is: A) Excessive gas pressure B) Insufficient gas pressure C) Insufficient secondary air to cool the burners D) Just a bad batch of burners ---------CORRECT ANSWER-----------------A A 1 ½" black Iron Gate line running for 50 feet can supply 670 cubic feet of natural gas per hour, or approximately 670,000 BTU's. A gas pressure regulator is rated at 800,000 BTU and is 1" N.P.T. Another regulator is rated at 1,200,000 BTU's and is 1 ½" N.P.T. Which regulator must you use? A) Either will work as they both have the BTU capacity B) The 1" because it will be much less expensive C) The 1 ½" because you must maintain pipe size to prevent creating restrictions D) Neither would be the right regulator ---------CORRECT ANSWER---------- -------C A gas pressure regulator is shipped alone with most LP fryers, either separate or as part of the

combination gas valve. This is a secondary regulator meaning that ___________. A) It can be connected directly to an LP tank B) It can be connected only after the pressure regulator on the LP tank C) It can be used only if two fryers are being installed D) It can be used only if the pipe size is 1/2" ---------CORRECT ANSWER-----------------B Natural gas when produced from the ground has _______ odor. A) A strong B) A mild C) No D) A pungent ---------CORRECT ANSWER-----------------C Any gas utilization equipment connected to a piping system shall have an accessible approved manual shut off valve must be installed within ________. A) 10 ft B) 8 ft C) 6 ft D) 4 ft ---------CORRECT ANSWER-----------------D Jack' Steak House has an infrared cheese melter mounted on the wall. The gas line exits the top and a gas pressure regulator is mounted right there. The regulator fails about every six weeks. The likely problem is ________. A) A batch of bad regulators B) The high ambient heat where the regulator is mounted C) The vertical mounting position of the regulator D) Border line low incoming gas pressure ---------CORRECT ANSWER------ -----------B

A) Replace the thermocouple it is obviously shorted B) Replace the safety valve it is obviously stuck closed C) Replace the pilot burner as it is heating the thermocouple to hot D) Replace the thermocouple with the weak output, and the safety that is sticking open ---------CORRECT ANSWER-----------------D Hyatt's restaurant has a kitchen full of natural gas equipment totaling 2,000,000 BTU's. Assuming that all of the equipment could be on at the same time how much air will be needed for complete combustion if the conditions were ideal? A) 20,000,000 cubic feet B) 4,000,000 cubic feet C) 20,000 cubic feet D) 280,000 cubic feet ---------CORRECT ANSWER-----------------C George is standing over a gas fired hotplate. There is a strong gas odor. George should: A) Light a match and run over the entire hotplate until he finds the leak B) Immediately turn off the gas supply to the hotplate C) Run out to his truck to get an electronic leak detector and find the leak D) Run out to his truck and get soap bubbles to find the leak --------- CORRECT ANSWER-----------------B Jane is servicing a millivolt operated fryer and the customer is claiming that the pilot keeps going out. Her meter is connected to the terminals on the gas valve marked TP and TH/TP. The fryer is heating normally and all the burners are on. The volt reading is 325 millivolts. The meter reading proves the problem is _____? A) A weak thermopile B) A weak gas valve C) Not a weak thermopile

D) Not a weak gas valve ---------CORRECT ANSWER-----------------A A bank of three fryers is connected to a gas line with a flexible gas line and quick disconnect assembly. The customer came in this morning and noticed that none of the fryers are working. Checking, he found the pilots were out, and proceeded to light all three. As soon as he tried to turn on the first fryer all three pilots went out. What is the first thing the customer should be told to check? A) That the gas valve is turned on B) That the gas line is not kinked C) That the quick disconnect is fully engaged together D) That the power is turned on to the fryers ---------CORRECT ANSWER---- -------------C AJ is called out to convert a older gas range from LP to Natural gas. The data plate is gone from the range. In order to make the conversion properly he will need to: A) Call the manufacturer and give the best guess of the model number to get a conversion kit B) Look up the orifice size from the service manual for a similar range C) Size the burners for the standard 30,000 BTU capacity D) Measure the orifice size, look it up on an orifice chart and convert it to a natural gas size ---------CORRECT ANSWER-----------------D A high efficiency fryer continuously backfires even though the ignitor has been adjusted. What should the tech do? A) All the answers apply B) Check for breaks in the insulation between tiles C) Suspect a leaking tank

Matt is out servicing a deck oven that uses a Robertshaw Fd thermostat and a FM mercury safety valve. The main burner will not come on, but the pilot is lit. The tip of the sensor is a dull red color. What does matt need to do: A) replace the safety valve B) clean or replace the pilot until the tip of the safety heats cherry red C) increase the gas pressure D) replace the thermostat as the bypass must be failing ---------CORRECT ANSWER-----------------B Jim is called out to service a gas fryer with a solid state temperature control circuit. When the temperature control calls for heat the solenoid chatters on and off. Jim needs to: A) Replace the solenoid valve B) Connect a resistor across the solenoid valve terminals C) Replace the temperature sensor probe D) Check the temperature control circuit to find the cause of the erratic voltage ---------CORRECT ANSWER-----------------D Joe is working on a heavy duty restaurant range. He has his manometer connected to the main burner manifold and notices that the pressure falls a little more with each burner that is turned on. The problem is ______? A) Insufficient gas pressure B) Insufficient gas volume C) Excessive gas volume D) Insufficient secondary air ---------CORRECT ANSWER-----------------B

You are called out on a LP gas range with open burners and standing pilots. The pilots keep going out. The gas pressure checks ok. You will need to ________. A) Replace the thermocouple B) Replace the safety valve C) Clean or replace the pilot burners D) Increase the gas pressure to the range ---------CORRECT ANSWER------ -----------C Oscar is called out to Joe's Steak House to check a new broiler that whistles whenever the burners are on full. He needs to locate the whistling burner and _______. A) Replace it B) Adjust the primary air C) Clean the burrs from the orifice, or replace it D) Turn the burner manifold to exactly 90* degrees ---------CORRECT ANSWER-----------------C A convection oven is controlled by a cooking computer which seems to malfunction at busy times of the day. Jay should check to see that ________________. A) The thermocouple is putting out the proper voltage B) The safety valve is not shorted out C) The computer is properly grounded D) All of the cooling fans in the control compartment are operating properly ---------CORRECT ANSWER-----------------D Bob is working on a convection oven and the customer is complaining that the pilot will not stay lit. He connects his volt meter through the thermocouple in line test adaptor and lights the pilot. The meter reading slowly rises to 22 millivolts, but when bob releases the button on the safety valve the pilot goes out. The problem is:

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. ---------CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------B 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 ---------CORRECT ANSWER-----------------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 ----- ----CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------B 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 ---------CORRECT ANSWER-----------------D What is the proper flame current for an ignition module? A) Always 3 or more microamps

A) 10,

B) 2500

C) 750

D) 1000 ---------CORRECT ANSWER-----------------D

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" ---------CORRECT 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" ---------CORRECT 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 ---------CORRECT ANSWER--- --------------C LP gas, at the appliance, is_______? A) Heavier than air B) Light yellow C) Lighter than air D) Odorless ---------CORRECT 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 - --------CORRECT 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 ---------CORRECT 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 ---------CORRECT ANSWER-----------------C The amount of BTU's that can be produced from one cubic foot of LP gas is approximately_____? A) 10, B) 25, C) 2, D) 1000 ---------CORRECT ANSWER-----------------C To help detect leaks,_____ is added to natural gas. A) Dye B) Oil

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 --------- CORRECT ANSWER-----------------D A BJ thermostat will be ruined permanently if not adjusted properly. To make an adjustment you must: A) Turn the adjustment screw counter clockwise only B) Loosen the lock screw before turning the adjustment screw C) Pry out the adjustment screw before turning it D) Push in and turn the adjustment screw no more than ¼ turn in either direction ---------CORRECT ANSWER-----------------D To calibrate a gas BJ or FD series thermostat you must first_______. A) Grease the valve stem B) Remove the calibration screw C) Set the bypass flame D) Use a digital thermometer ---------CORRECT ANSWER-----------------C A combination gas valve replaces a separate manual shut off valve, safety magnet, gas pressure regulators, and ________. A) thermocouple B) thermopile C) solenoid valve D) high limit temperature control ---------CORRECT ANSWER----------------- C

To check a thermocouple or thermopile you should use a _____. A) Milliampmeter B) A microvolt meter C) An AC millivolt meter D) A DC millivolt meter ---------CORRECT ANSWER-----------------D Measuring static gas pressure will tell you if you have sufficient gas ______ to meet the required nameplate data. A) No load pressure B) Volume C) Pressure and volume D) Gas flow ---------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 _______. 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

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 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 hours away. A) Dispatch a technician immediately to Cliff's B) Suggest that cliff check all of his gas lines C) Ask Cliff to attempt to light a range top burner somewhere to bleed the accumulated air from the gas lines, then to try turning the fryers on several more times to bleed the air form the fryer gas lines D) Ask Cliff to call the equipment manufacturer for suggestions --------- CORRECT ANSWER-----------------C The National Fuel Gas Code ANSI 2 - 223.1 is the standard for venting. The final jurisdiction is: A) NFPA B) Local authority C) AGA D) BOCA ---------CORRECT ANSWER-----------------B Harry is called out to service a range oven. The customer says the pilot will not stay lit, and it always smells like gas fumes when it is on. Looking through the peep hole in the kick plate he notices that the pilot light is fine, but as the burner is on for a short while the flames lift and float right off the burner. The problem is ______. A) A primary air adjustment is needed B) A secondary air adjustment is needed