G2 PREP FINAL STUDY GUIDE 2026
TESTED SOLUTIONS GRADED A+
⩥ What diameter and length of a dirt pocket is required when a drop line
is 3" in diameter.
Answer: 2" diameter/3" long
⩥ When sizing a branch line, what is the minimum size of job fabricated
welded fitting that can be used on a NPS 6" gas supply header.
Answer: 2" NPS
⩥ The instrument used to determine the polarity of an appliance power
supply is the.
Answer: Voltmeter
⩥ Direct current travels.
Answer: In one direction
⩥ A 120V power supply for a residential electrical circuit is taken from
the.
Answer: Load side of one branch circuit breaker and neutral lug
⩥ A hard sharp pilot flame indicates.
,Answer: The orifice is too small
⩥ Which tool is used to determine if the windings on an electric motor
have shorted.
Answer: Voltmeter
⩥ When the voltage has been determined to be approximately 120V,
which scale on an analog meter should be selected for the most accuracy.
Answer: 0-125V
⩥ One millivolt is equal to.
Answer: 1/1000 volt
⩥ When checking a circuit of an unknown voltage using an analog meter
with 0-30V, 0-125V, 0-250V and 0-600V which scale should be selected.
Answer: 0-600 V
⩥ The 24 V control circuit supply for a residential gas furnace comes
from a.
Answer: 120/24 step down transformer
⩥ As gauge number of a conductor increases, it's current carrying
capacity.
, Answer: Decreases
⩥ The instrument used to determine potential difference in an electrical
circuit is the.
Answer: Voltmeter
⩥ The open circuit test reading of a thermocouple should be in the range
of.
Answer: 25-30 mV
⩥ As the diameter of a wire increase, it's resistance.
Answer: decreases
⩥ Millivolt wiring should be isolated from line voltage wiring because.
Answer: The line voltage will induce a voltage into the millivolt wiring
⩥ A schematic diagram is used to.
Answer: Indicate how the system works
⩥ A thermopile or power pile generates.
Answer: Hundreds of Millivolts (up to 750 mV)
TESTED SOLUTIONS GRADED A+
⩥ What diameter and length of a dirt pocket is required when a drop line
is 3" in diameter.
Answer: 2" diameter/3" long
⩥ When sizing a branch line, what is the minimum size of job fabricated
welded fitting that can be used on a NPS 6" gas supply header.
Answer: 2" NPS
⩥ The instrument used to determine the polarity of an appliance power
supply is the.
Answer: Voltmeter
⩥ Direct current travels.
Answer: In one direction
⩥ A 120V power supply for a residential electrical circuit is taken from
the.
Answer: Load side of one branch circuit breaker and neutral lug
⩥ A hard sharp pilot flame indicates.
,Answer: The orifice is too small
⩥ Which tool is used to determine if the windings on an electric motor
have shorted.
Answer: Voltmeter
⩥ When the voltage has been determined to be approximately 120V,
which scale on an analog meter should be selected for the most accuracy.
Answer: 0-125V
⩥ One millivolt is equal to.
Answer: 1/1000 volt
⩥ When checking a circuit of an unknown voltage using an analog meter
with 0-30V, 0-125V, 0-250V and 0-600V which scale should be selected.
Answer: 0-600 V
⩥ The 24 V control circuit supply for a residential gas furnace comes
from a.
Answer: 120/24 step down transformer
⩥ As gauge number of a conductor increases, it's current carrying
capacity.
, Answer: Decreases
⩥ The instrument used to determine potential difference in an electrical
circuit is the.
Answer: Voltmeter
⩥ The open circuit test reading of a thermocouple should be in the range
of.
Answer: 25-30 mV
⩥ As the diameter of a wire increase, it's resistance.
Answer: decreases
⩥ Millivolt wiring should be isolated from line voltage wiring because.
Answer: The line voltage will induce a voltage into the millivolt wiring
⩥ A schematic diagram is used to.
Answer: Indicate how the system works
⩥ A thermopile or power pile generates.
Answer: Hundreds of Millivolts (up to 750 mV)
