GAS G1 COMBUSTION SYSTEMS PRACTICE
QUESTIONS AND ANSWERS FULL
RESOURCE
●● As the length of an Electrical run increases, it may be necessary to
Answer: Increase the Wire Size
●● Fuses serving motor circuits should be of
Answer: Time Delay Type
●● Millivolt wiring should be isolated from Line Voltage Wiring
because
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?
Answer: Ohmmeter
●● On an Electrical Schematic Diagram, the safety controls are typically
drawn:
Answer: To the Left of the Loads
,●● Which of the following types of wire must be used in Damp
locations?
Answer: NMW
●● On an Electrical Schematic, all operating controls are drawn:
Answer: Normally Open
●● As the length of a Conductor Increases, the Voltage Drop along the
Conductor:
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
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
Answer: 0-600V
●● A 120 Volt Power Supply for a residential Electrical Circuit is taken
from the:
Answer: Load side of one branch circuit breaker and a Neutral Plug
,●● A receptacle mounted Ground Fault Circuit Interrupted protects
against:
Answer: Current Flow to Ground
●● An Electrical Pictorial Diagram is used to:
Answer: Show component location
●● When using an Ohmmeter, the most important thing to remember is
to:
Answer: De-engerize the Circuit
●● A zero Ohmmeter reading taken between the casing of a Solenoid
and a disconnected Wire to the Solenoid indicates that
Answer: The coil is shorted to the casing of the device
●● The instrument used to determine Potential Difference in an
Electrical Circuit is the:
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?
Answer: 0-250 Volts
, ●● The resistance of a Thermistor... as its temperature rises
Answer: Decreases
●● A Hot Surface Igniter requires how many volts to operate properly ?
Answer: 115 to 125 VAC
●● It is permissible to use gas piping as an Electrical Ground if:
Answer: It is used in the Flame Safeguard Circuit
●● A Thermopile or Powerpile generates:
Answer: Hundreds of Millivolts
●● How is the Heat Anticipator setting determined for a Thermostat
with an adjustable Anticipator?
Answer: By measuring the current drawn by the components in the
circuit being feed directly by the Thermostat
●● A Fan Control is a:
Answer: Normally Open Temperature Control that Closes on
Temperature Rise
●● As the temperature of a Thermistor increases, the Current Flow
through it...
QUESTIONS AND ANSWERS FULL
RESOURCE
●● As the length of an Electrical run increases, it may be necessary to
Answer: Increase the Wire Size
●● Fuses serving motor circuits should be of
Answer: Time Delay Type
●● Millivolt wiring should be isolated from Line Voltage Wiring
because
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?
Answer: Ohmmeter
●● On an Electrical Schematic Diagram, the safety controls are typically
drawn:
Answer: To the Left of the Loads
,●● Which of the following types of wire must be used in Damp
locations?
Answer: NMW
●● On an Electrical Schematic, all operating controls are drawn:
Answer: Normally Open
●● As the length of a Conductor Increases, the Voltage Drop along the
Conductor:
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
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
Answer: 0-600V
●● A 120 Volt Power Supply for a residential Electrical Circuit is taken
from the:
Answer: Load side of one branch circuit breaker and a Neutral Plug
,●● A receptacle mounted Ground Fault Circuit Interrupted protects
against:
Answer: Current Flow to Ground
●● An Electrical Pictorial Diagram is used to:
Answer: Show component location
●● When using an Ohmmeter, the most important thing to remember is
to:
Answer: De-engerize the Circuit
●● A zero Ohmmeter reading taken between the casing of a Solenoid
and a disconnected Wire to the Solenoid indicates that
Answer: The coil is shorted to the casing of the device
●● The instrument used to determine Potential Difference in an
Electrical Circuit is the:
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?
Answer: 0-250 Volts
, ●● The resistance of a Thermistor... as its temperature rises
Answer: Decreases
●● A Hot Surface Igniter requires how many volts to operate properly ?
Answer: 115 to 125 VAC
●● It is permissible to use gas piping as an Electrical Ground if:
Answer: It is used in the Flame Safeguard Circuit
●● A Thermopile or Powerpile generates:
Answer: Hundreds of Millivolts
●● How is the Heat Anticipator setting determined for a Thermostat
with an adjustable Anticipator?
Answer: By measuring the current drawn by the components in the
circuit being feed directly by the Thermostat
●● A Fan Control is a:
Answer: Normally Open Temperature Control that Closes on
Temperature Rise
●● As the temperature of a Thermistor increases, the Current Flow
through it...
