NATE Gas Exam Questions With Correct
Answers
What is the typical load rating of the branch circuit over-current
| | | | | | | | | | |
protection for a residential gas furnace? - CORRECT ANSWER✔✔-15
| | | | | | | | |
Amp
When selecting a replacement indoor blower motor, which criteria
| | | | | | | | |
should be included? - CORRECT ANSWER✔✔-Motor horsepower
| | | | | |
What is the primary purpose of an off-delay timer in a gas furnace? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-Remove residual hear and prevent nuisance
| | | | | | |
limit trips
|
To minimize noise problems in residential duct systems, what is the
| | | | | | | | | | |
range (recommended to maximum) of design air velocity in the
| | | | | | | | | |
rectangular main supply trunk? - CORRECT ANSWER✔✔-700 to 900 fpm
| | | | | | | | |
What is recommended for a pressurization leak test of fuel gas pipe? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-Compressed air
| |
, Induced draft blowers in direct vent condensing furnaces pull
| | | | | | | | |
combustion air from - CORRECT ANSWER✔✔-outdoors only
| | | | | |
Combustion air is often brought into a non-direct vent gas furnace,
| | | | | | | | | | |
located in an interior closet (confined space). What consideration is
| | | | | | | | | |
important to remember? - CORRECT ANSWER✔✔-Two permanent
| | | | | | |
openings of sufficient size must be used
| | | | | |
The height limitation for a vertical combustion air intake on a
| | | | | | | | | | |
condensing gas furnace is set by - CORRECT ANSWER✔✔-the furnace
| | | | | | | | | |
manufacturer
When working on burners in a gas function - CORRECT ANSWER✔✔-the
| | | | | | | | | | |
individual burners must be mounted in correct alignment
| | | | | | |
A thermopile system usually generates its own control circuit voltage of
| | | | | | | | | |
- CORRECT ANSWER✔✔-750 mV
| | | |
There are two generally used methods for controlling temperature and
| | | | | | | | | |
humidity within individual zones of a residence. One is to use dampers
| | | | | | | | | | | |
to control supply airflow to each zone. What is the other method? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-Use separate and independent systems to
| | | | | | |
condition the air in each zone | | | | |
Answers
What is the typical load rating of the branch circuit over-current
| | | | | | | | | | |
protection for a residential gas furnace? - CORRECT ANSWER✔✔-15
| | | | | | | | |
Amp
When selecting a replacement indoor blower motor, which criteria
| | | | | | | | |
should be included? - CORRECT ANSWER✔✔-Motor horsepower
| | | | | |
What is the primary purpose of an off-delay timer in a gas furnace? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-Remove residual hear and prevent nuisance
| | | | | | |
limit trips
|
To minimize noise problems in residential duct systems, what is the
| | | | | | | | | | |
range (recommended to maximum) of design air velocity in the
| | | | | | | | | |
rectangular main supply trunk? - CORRECT ANSWER✔✔-700 to 900 fpm
| | | | | | | | |
What is recommended for a pressurization leak test of fuel gas pipe? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-Compressed air
| |
, Induced draft blowers in direct vent condensing furnaces pull
| | | | | | | | |
combustion air from - CORRECT ANSWER✔✔-outdoors only
| | | | | |
Combustion air is often brought into a non-direct vent gas furnace,
| | | | | | | | | | |
located in an interior closet (confined space). What consideration is
| | | | | | | | | |
important to remember? - CORRECT ANSWER✔✔-Two permanent
| | | | | | |
openings of sufficient size must be used
| | | | | |
The height limitation for a vertical combustion air intake on a
| | | | | | | | | | |
condensing gas furnace is set by - CORRECT ANSWER✔✔-the furnace
| | | | | | | | | |
manufacturer
When working on burners in a gas function - CORRECT ANSWER✔✔-the
| | | | | | | | | | |
individual burners must be mounted in correct alignment
| | | | | | |
A thermopile system usually generates its own control circuit voltage of
| | | | | | | | | |
- CORRECT ANSWER✔✔-750 mV
| | | |
There are two generally used methods for controlling temperature and
| | | | | | | | | |
humidity within individual zones of a residence. One is to use dampers
| | | | | | | | | | | |
to control supply airflow to each zone. What is the other method? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-Use separate and independent systems to
| | | | | | |
condition the air in each zone | | | | |
