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G2 Gas Technician BUNDLED exam 2023 with 100% correct answers
G2 practice exam #2 2023 with 100% correct answers G2 Gas Technician Module 12 2023 with 100% correct answers
[Montrer plus]G2 practice exam #2 2023 with 100% correct answers G2 Gas Technician Module 12 2023 with 100% correct answers
[Montrer plus]On a pilot what causes a lazy yellow flame? - correct answer -Dirty lint screen 
Primary air opening 
Orifice too big 
 
Main functions of a gas regulator? - correct answer -Reduce and maintain downstream pressure.Pressure to appliance can be adjusted.Smooth and even flow. 
 
What does the measuring...
Aperçu 3 sur 18 pages
Ajouter au panierOn a pilot what causes a lazy yellow flame? - correct answer -Dirty lint screen 
Primary air opening 
Orifice too big 
 
Main functions of a gas regulator? - correct answer -Reduce and maintain downstream pressure.Pressure to appliance can be adjusted.Smooth and even flow. 
 
What does the measuring...
An inline Ammeter is connected - correct answerIn series with the device being checked 
 
As the length of an Electrical run increases, it may be necessary to - correct answerIncrease the Wire Size 
 
Fuses serving motor circuits should be of - correct answerTime Delay Type 
 
Millivolt wiring shoul...
Aperçu 3 sur 28 pages
Ajouter au panierAn inline Ammeter is connected - correct answerIn series with the device being checked 
 
As the length of an Electrical run increases, it may be necessary to - correct answerIncrease the Wire Size 
 
Fuses serving motor circuits should be of - correct answerTime Delay Type 
 
Millivolt wiring shoul...
A room heater installed in either a sleeping area or public area shall be: 
A. direct vent only 
B. equipped with a regulator 
C. equipped with a fan 
D. equipped with an on / off switch on the wall - correct answer -B 
 
What type of vent must be used when the vent of a wall furnace will be conceal...
Aperçu 4 sur 91 pages
Ajouter au panierA room heater installed in either a sleeping area or public area shall be: 
A. direct vent only 
B. equipped with a regulator 
C. equipped with a fan 
D. equipped with an on / off switch on the wall - correct answer -B 
 
What type of vent must be used when the vent of a wall furnace will be conceal...
What is the minimum diameter of a pressure gauge needed to perform leak test on gas piping? 
A. 2" 
B. 2 - 3/4" 
C. 3" 
D. 3 - 1/2" - correct answer -c. 3" 
 
Amp meter can read what? 
A. Pressure drop. 
B. Conductor magnetic field. 
C. Load in parallel wires. 
D. Direct power across loads. ...
Aperçu 4 sur 31 pages
Ajouter au panierWhat is the minimum diameter of a pressure gauge needed to perform leak test on gas piping? 
A. 2" 
B. 2 - 3/4" 
C. 3" 
D. 3 - 1/2" - correct answer -c. 3" 
 
Amp meter can read what? 
A. Pressure drop. 
B. Conductor magnetic field. 
C. Load in parallel wires. 
D. Direct power across loads. ...
(10) What is a Servo? - correct answer -A mechanism set in motion by other mechanisms 
 
(10) What is Setpoint? - correct answer -The desired outlet perssure 
 
(10) Which regulator is more accurate; pilot operated or direct operated? - correct answer -Pilot operated 
 
(10) In which applications ar...
Aperçu 3 sur 17 pages
Ajouter au panier(10) What is a Servo? - correct answer -A mechanism set in motion by other mechanisms 
 
(10) What is Setpoint? - correct answer -The desired outlet perssure 
 
(10) Which regulator is more accurate; pilot operated or direct operated? - correct answer -Pilot operated 
 
(10) In which applications ar...
The ventor motor on a power vent water heater fails, this component prevents operation? 
a)Pressure relief valve 
b)ECO switch 
c)High limit switch 
d)Pressure Switch - correct answer -Pressure Switch 
 
What is the ignition temperature for natural gas? 
a)920 degrees Fahrenheit 
b)1000 degrees Fahr...
Aperçu 3 sur 29 pages
Ajouter au panierThe ventor motor on a power vent water heater fails, this component prevents operation? 
a)Pressure relief valve 
b)ECO switch 
c)High limit switch 
d)Pressure Switch - correct answer -Pressure Switch 
 
What is the ignition temperature for natural gas? 
a)920 degrees Fahrenheit 
b)1000 degrees Fahr...
List two sources of regulations and standards of practice that influence decisions concerning air flow in residential construction. - correct answer -F280 and F326 
 
Name three methods of heat transfer. - correct answer -Conduction, Convection and Radiant 
 
What is enthalpy? - correct answer -All ...
Aperçu 1 sur 3 pages
Ajouter au panierList two sources of regulations and standards of practice that influence decisions concerning air flow in residential construction. - correct answer -F280 and F326 
 
Name three methods of heat transfer. - correct answer -Conduction, Convection and Radiant 
 
What is enthalpy? - correct answer -All ...
Why are air cleaners installed ahead of heating or cooling coils and air conditioners? - correct answer -To protect the equipment from dust and increase efficiency 
 
What are two ways in which a mechanical filter could restrict air flow? - correct answer -Dirty Air Filter and Incorrect Air Filter 
...
Aperçu 1 sur 4 pages
Ajouter au panierWhy are air cleaners installed ahead of heating or cooling coils and air conditioners? - correct answer -To protect the equipment from dust and increase efficiency 
 
What are two ways in which a mechanical filter could restrict air flow? - correct answer -Dirty Air Filter and Incorrect Air Filter 
...
What pressure does atmospheric pressure exert on the earth at sea level? - correct answer -14.74 psia 
 
What two things mean you must bring in combustion air. - correct answer -1. Total BTU of appliance if greater than 400000 you must bring in combustion air. 
2. If house is tight construction you ...
Aperçu 1 sur 4 pages
Ajouter au panierWhat pressure does atmospheric pressure exert on the earth at sea level? - correct answer -14.74 psia 
 
What two things mean you must bring in combustion air. - correct answer -1. Total BTU of appliance if greater than 400000 you must bring in combustion air. 
2. If house is tight construction you ...
What type of vent is used on a wall furnace? - correct answer -BW Venting 
 
What temperature does a low-intensity infrared heater fire at? where are they used? - correct answer -1200 F and are used in factories and commercial buildings 
 
How does a low intensity infrared heater work? - correct ans...
Aperçu 1 sur 3 pages
Ajouter au panierWhat type of vent is used on a wall furnace? - correct answer -BW Venting 
 
What temperature does a low-intensity infrared heater fire at? where are they used? - correct answer -1200 F and are used in factories and commercial buildings 
 
How does a low intensity infrared heater work? - correct ans...
What prevents the water in a hydronic heating system from boiling into steam when the system is operating above the atmospheric temperature? - correct answer -Pressurization of the system 
 
List the four subsystems of a hydronic space heating system? - correct answer -Heat Source, Circulation syste...
Aperçu 2 sur 5 pages
Ajouter au panierWhat prevents the water in a hydronic heating system from boiling into steam when the system is operating above the atmospheric temperature? - correct answer -Pressurization of the system 
 
List the four subsystems of a hydronic space heating system? - correct answer -Heat Source, Circulation syste...
If the venting on a high efficiency furnace runs through unheated spaces, what must be done? - correct answer -Insulate piping to prevent Condensation and freezing 
 
What is condensate drain piping used for? - correct answer -Dispose Liquid waste 
 
Once the furnace is installed, what are the gas t...
Aperçu 2 sur 9 pages
Ajouter au panierIf the venting on a high efficiency furnace runs through unheated spaces, what must be done? - correct answer -Insulate piping to prevent Condensation and freezing 
 
What is condensate drain piping used for? - correct answer -Dispose Liquid waste 
 
Once the furnace is installed, what are the gas t...
What is a temperature control made of in a water heater? Which one is the sensing element? - correct answer -Rod and tube. Rod is steel and tube is copper. Copper is the sensing element. 
 
Temperature settings on a water heater? - correct answer -Hot - 160 F 
Normal - 130 F 
Warm - 120 F 
 
What do...
Aperçu 1 sur 4 pages
Ajouter au panierWhat is a temperature control made of in a water heater? Which one is the sensing element? - correct answer -Rod and tube. Rod is steel and tube is copper. Copper is the sensing element. 
 
Temperature settings on a water heater? - correct answer -Hot - 160 F 
Normal - 130 F 
Warm - 120 F 
 
What do...
What are the factors governing a conversion? - correct answer Availability of gas, efficiency if converted, access to combustible air, satisfactory ductwork, can a chimney liner be installed, clearances from combustibles, manufactures recommendations, if a water heater is also being installed (commo...
Aperçu 2 sur 5 pages
Ajouter au panierWhat are the factors governing a conversion? - correct answer Availability of gas, efficiency if converted, access to combustible air, satisfactory ductwork, can a chimney liner be installed, clearances from combustibles, manufactures recommendations, if a water heater is also being installed (commo...
What are the three functions of a regulator? - correct answer -1. To reduce and maintain constant downstream pressure 
2. To allow pressure adjustments to the appliance 
3. To provide a smoother even flow 
 
What are the three operating forces of a gas regulator? - correct answer -1. Measuring eleme...
Aperçu 2 sur 8 pages
Ajouter au panierWhat are the three functions of a regulator? - correct answer -1. To reduce and maintain constant downstream pressure 
2. To allow pressure adjustments to the appliance 
3. To provide a smoother even flow 
 
What are the three operating forces of a gas regulator? - correct answer -1. Measuring eleme...
What are the two main purposes of gas pressure regulators? - correct answerTo reduce and maintain the downstream pressure and to provide pressure to appliances or burners 
 
What are the four categories of a gas pressure regulators? - correct answerFirst stage/Service Regulator, Line Pressure Regula...
Aperçu 1 sur 4 pages
Ajouter au panierWhat are the two main purposes of gas pressure regulators? - correct answerTo reduce and maintain the downstream pressure and to provide pressure to appliances or burners 
 
What are the four categories of a gas pressure regulators? - correct answerFirst stage/Service Regulator, Line Pressure Regula...
What does an Aquastat do? - correct answer Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. 
 
What does a low water cut off do? - correct answer Automatic safety control (normally closed). Senses water level in the boiler. If ...
Aperçu 2 sur 8 pages
Ajouter au panierWhat does an Aquastat do? - correct answer Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. 
 
What does a low water cut off do? - correct answer Automatic safety control (normally closed). Senses water level in the boiler. If ...
The unit of potential difference or electromotive force. - correct answer -Volt 
 
The amount of electrical current that will move through one ohm of resistance when a force of one volt is applied. - correct answer -Amperage (amps) 
 
How do you measure electrical power. - correct answer -Watt (p) 
...
Aperçu 2 sur 6 pages
Ajouter au panierThe unit of potential difference or electromotive force. - correct answer -Volt 
 
The amount of electrical current that will move through one ohm of resistance when a force of one volt is applied. - correct answer -Amperage (amps) 
 
How do you measure electrical power. - correct answer -Watt (p) 
...
The working pressure differential between the gas meter outlet and the appliance regulator inlet at furthest appliance from meter - correct answer -Define pressure drop 
 
0.5" w.c. - correct answer -What is the Max pressure drop >7" w.c. NG 
 
1" w.c. - correct answer -What is the Max pressur...
Aperçu 2 sur 5 pages
Ajouter au panierThe working pressure differential between the gas meter outlet and the appliance regulator inlet at furthest appliance from meter - correct answer -Define pressure drop 
 
0.5" w.c. - correct answer -What is the Max pressure drop >7" w.c. NG 
 
1" w.c. - correct answer -What is the Max pressur...
The best tool for adjusting and setting the pressure on an appliance regulator: 
 
a. 
Manometer 
 
b. 
Velometer 
 
c. 
Psychrometer 
 
d. 
An analyzer - correct answer -Manometer 
 
3/8 NPS black iron pipe shall? 
 
a. Not be used for propane 
b. Not be used in a concealed location 
c. Not be used...
Aperçu 4 sur 143 pages
Ajouter au panierThe best tool for adjusting and setting the pressure on an appliance regulator: 
 
a. 
Manometer 
 
b. 
Velometer 
 
c. 
Psychrometer 
 
d. 
An analyzer - correct answer -Manometer 
 
3/8 NPS black iron pipe shall? 
 
a. Not be used for propane 
b. Not be used in a concealed location 
c. Not be used...
Relative humidity is defined as? - correct answer -The percentage of moisture that the quantity of air is holding in relation to how much it can hold 
 
A certified hose can be used to connect a construction heater to a gas piping system for temporary use when? - correct answer -When 1/4 turn level ...
Aperçu 2 sur 7 pages
Ajouter au panierRelative humidity is defined as? - correct answer -The percentage of moisture that the quantity of air is holding in relation to how much it can hold 
 
A certified hose can be used to connect a construction heater to a gas piping system for temporary use when? - correct answer -When 1/4 turn level ...
Nitrogen is a TSSA Q 
a. Toxin 
b. Explosive gas 
c. Inert gas 
d. Neutralizing gas - correct answer -c. Inert gas 
 
If a crack is identified in a residential furnace, the technician must TSSA Q 
a. Inform the customer, notify gas utility verbally within 14 days, shut off gas to appliance 
b. Infor...
Aperçu 2 sur 5 pages
Ajouter au panierNitrogen is a TSSA Q 
a. Toxin 
b. Explosive gas 
c. Inert gas 
d. Neutralizing gas - correct answer -c. Inert gas 
 
If a crack is identified in a residential furnace, the technician must TSSA Q 
a. Inform the customer, notify gas utility verbally within 14 days, shut off gas to appliance 
b. Infor...
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