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Gas Technician G2 License Questions and Answers Complete and Verified 2024/2025
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Gas Technician G2 License Questions andAnswers Complete and Verified
2024/2025
An inline Ammeter is connected
In series with the device being checked
As the length of an Electrical run increases, it may be necessary to
Increase the Wire Size
Fuses serving motor circuits should be of
Time Delay Type
Millivolt wiring should be isolated from Line Voltage Wiring because
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?
Ohmmeter
On an Electrical Schematic Diagram, the safety controls are typically drawn:
To the Left of the Loads
Which of the following types of wire must be used in Damp locations?
NMW
On an Electrical Schematic, all operating controls are drawn:
Normally Open
As the length of a Conductor Increases, the Voltage Drop along the Conductor:
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
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
0-600V
A 120 Volt Power Supply for a residential Electrical Circuit is taken from the:
Load side of one branch circuit breaker and a Neutral Plug
A receptacle mounted Ground Fault Circuit Interrupted protects against:
Current Flow to Ground
An Electrical Pictorial Diagram is used to:
,Show component location
When using an Ohmmeter, the most important thing to remember is to:
De-engerize the Circuit
A zero Ohmmeter reading taken between the casing of a Solenoid and a disconnected Wire to the
Solenoid indicates that
The coil is shorted to the casing of the device
The instrument used to determine Potential Difference in an Electrical Circuit is the:
Voltmeter
When the Voltage has been determine to be approximately 120 volts, which scale on an analog
meter should be selected for most accuracy?
0-250 Volts
The resistance of a Thermistor... as its temperature rises
Decreases
A Hot Surface Igniter requires how many volts to operate properly ?
115 to 125 VAC
It is permissible to use gas piping as an Electrical Ground if:
It is used in the Flame Safeguard Circuit
A Thermopile or Powerpile generates:
Hundreds of Millivolts
How is the Heat Anticipator setting determined for a Thermostat with an adjustable Anticipator?
By measuring the current drawn by the components in the circuit being feed directly by the Thermostat
A Fan Control is a:
Normally Open Temperature Control that Closes on Temperature Rise
As the temperature of a Thermistor increases, the Current Flow through it...
Increases
A Thermostat with a Single Mercury Bulb which controls a Single Stage Heat, Single Stage Cool
unit is a... control
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
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"?
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:
, 30% - 50%
From the following list, which action will have the greatest effect on reducing mold growth in a
house?
Covering earthen floors and open water surfaces (stumps, aquariums etc.) Open stumps and earth floors
and will introduce a ton of humidity into the house
After a Direct Vent Radiant Heating System is installed in a new house, the customer complains
that, "The Walls and Windows are wet". What is the most reasonable response?
Recommend the installation of a Mechanical Ventilation System
Which is the most common cause of Flue Gas Spillage from gas appliances?
Negative Air Pressure caused by Mechanical Systems
There are two appliances in a 10ft x 10ft x 20ft structure which has an equivalent leakage area
greater than 0.05 square meters. A furnace has a draft hood and input of 50,000 BTUH. The
second appliance has an input of 75,000 BTUH, and does not have a draft hood. The required
combustion air opening size is:
9 Square Inches (5800 mm2)
Air enters a House through a process called...
Infiltration
Two Hot Water Boilers each firing at 750,000 BTUH, 1 Water Heater firing at 270,000 BTUH and 1
Water Heater firing at 30,000 BTUH. These appliances are contained in a room with a cutout and a
grill with 80% free area. What size in square inches should the grill be?
250 Square Inches
What is the minimum size of a Combustion Air Opening from outdoors for an appliance without a
Draft Hood and having an input of 125,000 BTUH installed in a structure that has a continuous
Vapour Barrier and has an equivalent leakage area of 0.05 m2 at a differential pressure of 10
parcels and dimensions of 10ft x 10ft x 20ft?
9 Square Inches
What is the minimum size of the combustion air opening from outdoors for an appliance without a
Draft Hood and with an input of 50,000 BTUH installed installed in a structure which has an
equivalent leakage area greater than 0.05 m2 and dimensions of 10ft x 10ft x 20ft?
0 Square Inches
If the Relative Humidity of a room is increased, the Temperature in the room must be increase to
maintain the same level of comfort.
False
As the number of occupants in a tightly constructed building increases, the:
Relative Humidity Increases
The best way to remove odours from a house is to:
Ventilate the house
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