G2 EXAM 2025 NEWEST QUESTIONS
AND DETAILED CORRECT ANSWERS |
A+ GRADE VERIFIED ANSWERS
A device that only allows current to flow in one direction is called?
a. Resistor
b. Check valve
c. Diode
d. DC voltmeter Correct Answer Diode
A heat anticipator is wired?
a. In parallel with the gas valve
b. In series with the limit switch
c. In parallel with the limit switch
d. In series with the gas valve Correct Answer In series with the
gas valve
A low water cut off on a boiler may be replaced by?
:
a. A licensed boiler man
b. A licensed plumber
c. A licensed Gas Technician 2
d. A licensed Gas Technician 1 Correct Answer A licensed
plumber
A pictorial diagram is used?
a. To determine the wire size required to install the components
b. To determine the where wires are congested
,c. To determine how something works and what the components
do
d. To determine where components are physically located Correct
Answer To determine how something works and what
components do
A reading of 25 millivolts on an open circuit test of a thermocouple
indicates?
a. It must be replaced
b. It just needs to be cleaned
c. It is not working correctly
d. It is working correctly Correct Answer It is working correctly
A redundant gas valve?
a. Is piped in parallel
b. Is only used on boilers
c. Contains a pilot valve and main valve
d. Is only used in appliances over 400,000 Btuh Correct Answer
Contains a pilot valve and main valve
A voltmeter with an analog scale is to be used on a circuit of an
unknown voltage. The scale should be set on?
Select one:
a. 0-48 V
b. 0-250 V
c. 0-600 V
d. 0-125 V Correct Answer 0-600 V
A zero reading with a voltmeter across R and C on a circuit board
in a furnace would indicate?
Select one:
,a. The thermostat is calling for heat
b. The thermostat is calling for cooling
c. The thermostat is not calling at all
d. The fuse on the board is burnt Correct Answer The thermostat
is calling for heat
An interrupted pilot is?
a. A pilot that burns at a low turndown throughout the entire time
the burner is 111 service, whether or not the main burner is firing,
except that upon a call for heat, the fuel flow to the pilot is
automatically increased to produce a flame which will reliably
ignite the main burner fuel.
b. A pilot flame supervised by a primary safety control that senses
the presence of the pilot prior to gas being admitted to the main
burner.
c. A pilot that is automatically lighted each time there is-a call for
heat and that is cut off automatically at the end of the trial for
ignition period of the main burner.
d. A pilot that burns without turndown throughout the entire time
the burner is in service, whether the main burner is firing or not.
Correct Answer A pilot that is automatically lighted each time
there is-a call for heat and that is cut off automatically at the end
of the trial for ignition period of the main burner.
As the gauge number of a conductor decreases the current
carrying capacity?
a.
Opposite for aluminum conductors
b.
, Increases
c.
Decrease
d.
Stays the same Correct Answer Increases
As the gauge number of the conductor decreases the resistance?
a.
Increases
b.
Opposite for aluminum conductors
c.
Stays the same
d.
Decreases Correct Answer Decreases
As the gauge number of the conductor decreases the voltage
drop?
a.
Stays the same
b.
Decreases
c.
Increases
d.
AND DETAILED CORRECT ANSWERS |
A+ GRADE VERIFIED ANSWERS
A device that only allows current to flow in one direction is called?
a. Resistor
b. Check valve
c. Diode
d. DC voltmeter Correct Answer Diode
A heat anticipator is wired?
a. In parallel with the gas valve
b. In series with the limit switch
c. In parallel with the limit switch
d. In series with the gas valve Correct Answer In series with the
gas valve
A low water cut off on a boiler may be replaced by?
:
a. A licensed boiler man
b. A licensed plumber
c. A licensed Gas Technician 2
d. A licensed Gas Technician 1 Correct Answer A licensed
plumber
A pictorial diagram is used?
a. To determine the wire size required to install the components
b. To determine the where wires are congested
,c. To determine how something works and what the components
do
d. To determine where components are physically located Correct
Answer To determine how something works and what
components do
A reading of 25 millivolts on an open circuit test of a thermocouple
indicates?
a. It must be replaced
b. It just needs to be cleaned
c. It is not working correctly
d. It is working correctly Correct Answer It is working correctly
A redundant gas valve?
a. Is piped in parallel
b. Is only used on boilers
c. Contains a pilot valve and main valve
d. Is only used in appliances over 400,000 Btuh Correct Answer
Contains a pilot valve and main valve
A voltmeter with an analog scale is to be used on a circuit of an
unknown voltage. The scale should be set on?
Select one:
a. 0-48 V
b. 0-250 V
c. 0-600 V
d. 0-125 V Correct Answer 0-600 V
A zero reading with a voltmeter across R and C on a circuit board
in a furnace would indicate?
Select one:
,a. The thermostat is calling for heat
b. The thermostat is calling for cooling
c. The thermostat is not calling at all
d. The fuse on the board is burnt Correct Answer The thermostat
is calling for heat
An interrupted pilot is?
a. A pilot that burns at a low turndown throughout the entire time
the burner is 111 service, whether or not the main burner is firing,
except that upon a call for heat, the fuel flow to the pilot is
automatically increased to produce a flame which will reliably
ignite the main burner fuel.
b. A pilot flame supervised by a primary safety control that senses
the presence of the pilot prior to gas being admitted to the main
burner.
c. A pilot that is automatically lighted each time there is-a call for
heat and that is cut off automatically at the end of the trial for
ignition period of the main burner.
d. A pilot that burns without turndown throughout the entire time
the burner is in service, whether the main burner is firing or not.
Correct Answer A pilot that is automatically lighted each time
there is-a call for heat and that is cut off automatically at the end
of the trial for ignition period of the main burner.
As the gauge number of a conductor decreases the current
carrying capacity?
a.
Opposite for aluminum conductors
b.
, Increases
c.
Decrease
d.
Stays the same Correct Answer Increases
As the gauge number of the conductor decreases the resistance?
a.
Increases
b.
Opposite for aluminum conductors
c.
Stays the same
d.
Decreases Correct Answer Decreases
As the gauge number of the conductor decreases the voltage
drop?
a.
Stays the same
b.
Decreases
c.
Increases
d.
