NATE Gas Exam Preparation Version 1 Newest 2026-
2027 With Complete Questions And Correct Detailed
Answers| Brand New Version!
The test to be used to check the wiring and connections to the
terminals of an energized blower motor is a: - ANSWER-Voltage test.
The following conditions exist in a circuit that supplies power to three
parallel loads. - ANSWER-The total current in the circuit when operating
will be the sum of the currents through each load.
To test the continuity of an internal overload protector in a single-phase
motor the motor: - ANSWER-Must be cool.
A control string is defined as two or more switch contacts connected in
a circuit, or set of circuits, to control a load. In order to troubleshoot a
load controlled by a control string, the technician must first: - ANSWER-
Check for proper voltage applied across the load.
When troubleshooting a blower motor circuit on a packaged system,
244V is measured across the motor and no amperage is measured: -
ANSWER-The likely problem with this system is an internal overload
device is open.
1|Page
,The continuity through a de-energized relay coil is checked by using
what? - ANSWER-Ohmmeter
What is the industry accepted method for locating a suspected natural
gas leak? - ANSWER-A soap solution.
A customer has concerns about carbon monoxide (CO) in their hone.
Many of their reported symptoms indicate there may indeed be a CO
problem but on each trip the technician makes to check their home the
technician finds normal CO levels. - ANSWER-CO detector
reader/recorder would be appropriate to use for determining if a
problem truly exists.
Prior to performing an air balancing check of a newly installed duct
system: - ANSWER-Dampers should be open completely in all rooms.
An external static check with a high reading indicates that the blower is
developing enough: - ANSWER-RPM
The following readings, are most appropriate for complete air balancing
report - ANSWER-Total pressure
Static pressure
Outlet pressure
2|Page
, When should ducts be cleaned? - ANSWER-Every 5 years
Typically gas furnaces are designed to have a static pressure of what? -
ANSWER-.5
What are four types of gas furnaces? - ANSWER-Up flow, down flow,
horizontal, lo-boy
The air velocity of disposable filters are what? - ANSWER-700 to 750
ft/min
How many cuts are on duct board? - ANSWER-3
How many BTU's are in a therm - ANSWER-100,000 BTU's
Where are your probes placed to get your temp difference? - ANSWER-
In the return air before the air filter and out of the line of sight of the
heat exchanger
What is the maximum allowable sag for ductwork? - ANSWER-1/2 in per
foot
3|Page
2027 With Complete Questions And Correct Detailed
Answers| Brand New Version!
The test to be used to check the wiring and connections to the
terminals of an energized blower motor is a: - ANSWER-Voltage test.
The following conditions exist in a circuit that supplies power to three
parallel loads. - ANSWER-The total current in the circuit when operating
will be the sum of the currents through each load.
To test the continuity of an internal overload protector in a single-phase
motor the motor: - ANSWER-Must be cool.
A control string is defined as two or more switch contacts connected in
a circuit, or set of circuits, to control a load. In order to troubleshoot a
load controlled by a control string, the technician must first: - ANSWER-
Check for proper voltage applied across the load.
When troubleshooting a blower motor circuit on a packaged system,
244V is measured across the motor and no amperage is measured: -
ANSWER-The likely problem with this system is an internal overload
device is open.
1|Page
,The continuity through a de-energized relay coil is checked by using
what? - ANSWER-Ohmmeter
What is the industry accepted method for locating a suspected natural
gas leak? - ANSWER-A soap solution.
A customer has concerns about carbon monoxide (CO) in their hone.
Many of their reported symptoms indicate there may indeed be a CO
problem but on each trip the technician makes to check their home the
technician finds normal CO levels. - ANSWER-CO detector
reader/recorder would be appropriate to use for determining if a
problem truly exists.
Prior to performing an air balancing check of a newly installed duct
system: - ANSWER-Dampers should be open completely in all rooms.
An external static check with a high reading indicates that the blower is
developing enough: - ANSWER-RPM
The following readings, are most appropriate for complete air balancing
report - ANSWER-Total pressure
Static pressure
Outlet pressure
2|Page
, When should ducts be cleaned? - ANSWER-Every 5 years
Typically gas furnaces are designed to have a static pressure of what? -
ANSWER-.5
What are four types of gas furnaces? - ANSWER-Up flow, down flow,
horizontal, lo-boy
The air velocity of disposable filters are what? - ANSWER-700 to 750
ft/min
How many cuts are on duct board? - ANSWER-3
How many BTU's are in a therm - ANSWER-100,000 BTU's
Where are your probes placed to get your temp difference? - ANSWER-
In the return air before the air filter and out of the line of sight of the
heat exchanger
What is the maximum allowable sag for ductwork? - ANSWER-1/2 in per
foot
3|Page
