Gas Technician G2 License Exam 2026
Questions and Answers
An inline Ammeter is connected - Correct Answer -In series with the device being
checked
As the length of an Electrical run increases, it may be necessary to - Correct
Answer -Increase the Wire Size
Fuses serving motor circuits should be of - Correct Answer -Time Delay Type
Millivolt wiring should be isolated from Line Voltage Wiring because - Correct
Answer -The Line Voltage will induce a voltage into the Millivolt Wiring
Which tool is used to determine if the windings on an Electric Motor have shorted?
- Correct Answer -Ohmmeter
On an Electrical Schematic Diagram, the safety controls are typically drawn: -
Correct Answer -To the Left of the Loads
Which of the following types of wire must be used in Damp locations? - Correct
Answer -NMW
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,On an Electrical Schematic, all operating controls are drawn: - Correct Answer -
Normally Open
As the length of a Conductor Increases, the Voltage Drop along the Conductor: -
Correct Answer -Increases
When a new appliance is to be installed in a typical residential basement and the
Supply Wiring to it is concealed, which of the following types of wire is
acceptable, and most cost effective - Correct Answer -NMD
When checking a circuit of unknown Voltage using an analog meter with 0-30V, 0-
125V, 0-250V, and 0-600V, which scale should be selected - Correct Answer -0-
600V
A 120 Volt Power Supply for a residential Electrical Circuit is taken from the: -
Correct Answer -Load side of one branch circuit breaker and a Neutral Plug
A receptacle mounted Ground Fault Circuit Interrupted protects against: - Correct
Answer -Current Flow to Ground
An Electrical Pictorial Diagram is used to: - Correct Answer -Show component
location
When using an Ohmmeter, the most important thing to remember is to: - Correct
Answer -De-engerize the Circuit
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,A zero Ohmmeter reading taken between the casing of a Solenoid and a
disconnected Wire to the Solenoid indicates that - Correct Answer -The coil is
shorted to the casing of the device
The instrument used to determine Potential Difference in an Electrical Circuit is
the: - Correct Answer -Voltmeter
When the Voltage has been determine to be approximately 120 volts, which scale
on an analog meter should be selected for most accuracy? - Correct Answer -0-250
Volts
The resistance of a Thermistor... as its temperature rises - Correct Answer -
Decreases
A Hot Surface Igniter requires how many volts to operate properly ? - Correct
Answer -115 to 125 VAC
It is permissible to use gas piping as an Electrical Ground if: - Correct Answer -It
is used in the Flame Safeguard Circuit
A Thermopile or Powerpile generates: - Correct Answer -Hundreds of Millivolts
How is the Heat Anticipator setting determined for a Thermostat with an adjustable
Anticipator? - Correct Answer -By measuring the current drawn by the components
in the circuit being feed directly by the Thermostat
©COPYRIGHT 2025 ALL RIGHTS RESERVED 3
, A Fan Control is a: - Correct Answer -Normally Open Temperature Control that
Closes on Temperature Rise
As the temperature of a Thermistor increases, the Current Flow through it... -
Correct Answer -Increases
A Thermostat with a Single Mercury Bulb which controls a Single Stage Heat,
Single Stage Cool unit is a... control - Correct Answer -SPDT (Single Pole Double
Throw)
A Thermostat serving a unit which has separate Heating and Cooling Control
transformers and has One Stage of Heating and One Stage of Cooling is a... control
- Correct Answer -DPDT (Double Pole Double Throw)
Separate Heating and Cooling, therefore Double Pole and Double Stage for
Heating and Cooling therefore Double Throw. Which of the following heating
systems would be expected to cause problems due to the "Distribution Effect"? -
Correct Answer -A Forced Air Furnace with a return air opening in the furnace
room
The recommended range of Relative Humidity in a house to control Indoor Air
Contaminates, increase comfort, and maintain the structural integrity of the house
is: - Correct Answer -30% - 50%
©COPYRIGHT 2025 ALL RIGHTS RESERVED 4
Questions and Answers
An inline Ammeter is connected - Correct Answer -In series with the device being
checked
As the length of an Electrical run increases, it may be necessary to - Correct
Answer -Increase the Wire Size
Fuses serving motor circuits should be of - Correct Answer -Time Delay Type
Millivolt wiring should be isolated from Line Voltage Wiring because - Correct
Answer -The Line Voltage will induce a voltage into the Millivolt Wiring
Which tool is used to determine if the windings on an Electric Motor have shorted?
- Correct Answer -Ohmmeter
On an Electrical Schematic Diagram, the safety controls are typically drawn: -
Correct Answer -To the Left of the Loads
Which of the following types of wire must be used in Damp locations? - Correct
Answer -NMW
©COPYRIGHT 2025 ALL RIGHTS RESERVED 1
,On an Electrical Schematic, all operating controls are drawn: - Correct Answer -
Normally Open
As the length of a Conductor Increases, the Voltage Drop along the Conductor: -
Correct Answer -Increases
When a new appliance is to be installed in a typical residential basement and the
Supply Wiring to it is concealed, which of the following types of wire is
acceptable, and most cost effective - Correct Answer -NMD
When checking a circuit of unknown Voltage using an analog meter with 0-30V, 0-
125V, 0-250V, and 0-600V, which scale should be selected - Correct Answer -0-
600V
A 120 Volt Power Supply for a residential Electrical Circuit is taken from the: -
Correct Answer -Load side of one branch circuit breaker and a Neutral Plug
A receptacle mounted Ground Fault Circuit Interrupted protects against: - Correct
Answer -Current Flow to Ground
An Electrical Pictorial Diagram is used to: - Correct Answer -Show component
location
When using an Ohmmeter, the most important thing to remember is to: - Correct
Answer -De-engerize the Circuit
©COPYRIGHT 2025 ALL RIGHTS RESERVED 2
,A zero Ohmmeter reading taken between the casing of a Solenoid and a
disconnected Wire to the Solenoid indicates that - Correct Answer -The coil is
shorted to the casing of the device
The instrument used to determine Potential Difference in an Electrical Circuit is
the: - Correct Answer -Voltmeter
When the Voltage has been determine to be approximately 120 volts, which scale
on an analog meter should be selected for most accuracy? - Correct Answer -0-250
Volts
The resistance of a Thermistor... as its temperature rises - Correct Answer -
Decreases
A Hot Surface Igniter requires how many volts to operate properly ? - Correct
Answer -115 to 125 VAC
It is permissible to use gas piping as an Electrical Ground if: - Correct Answer -It
is used in the Flame Safeguard Circuit
A Thermopile or Powerpile generates: - Correct Answer -Hundreds of Millivolts
How is the Heat Anticipator setting determined for a Thermostat with an adjustable
Anticipator? - Correct Answer -By measuring the current drawn by the components
in the circuit being feed directly by the Thermostat
©COPYRIGHT 2025 ALL RIGHTS RESERVED 3
, A Fan Control is a: - Correct Answer -Normally Open Temperature Control that
Closes on Temperature Rise
As the temperature of a Thermistor increases, the Current Flow through it... -
Correct Answer -Increases
A Thermostat with a Single Mercury Bulb which controls a Single Stage Heat,
Single Stage Cool unit is a... control - Correct Answer -SPDT (Single Pole Double
Throw)
A Thermostat serving a unit which has separate Heating and Cooling Control
transformers and has One Stage of Heating and One Stage of Cooling is a... control
- Correct Answer -DPDT (Double Pole Double Throw)
Separate Heating and Cooling, therefore Double Pole and Double Stage for
Heating and Cooling therefore Double Throw. Which of the following heating
systems would be expected to cause problems due to the "Distribution Effect"? -
Correct Answer -A Forced Air Furnace with a return air opening in the furnace
room
The recommended range of Relative Humidity in a house to control Indoor Air
Contaminates, increase comfort, and maintain the structural integrity of the house
is: - Correct Answer -30% - 50%
©COPYRIGHT 2025 ALL RIGHTS RESERVED 4
