NATE Core Exam 2025 Questions and
Answers
In HVACR terms, what is a feature? - ANSWER✔✔-A special characteristic of a product.
In HVACR terms, what is a benefit? - ANSWER✔✔-The value the customer receives from using
the feature
What type of temperature is often used by customers when discussing human comfort? -
ANSWER✔✔-Dry bulb
What is an honest person? - ANSWER✔✔-A person who is free from fraud or deception, credible,
and is marked with integrity. An honest person is fair in their dealings with other people.
What is the unit of electrical pressure? - ANSWER✔✔-Volt
How is line voltage represented on a ladder diagram? - ANSWER✔✔-The vertical lines on the sides
of the ladder.
What are humidifiers in heating systems used for? - ANSWER✔✔-To raise relative humidity and
increase human comfort.
What are some factors contribute to comfort in a home or building? - ANSWER✔✔-Temperature,
humidity, ventilation, cleanliness of the air.
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
, True or false?
Care should be taken before sawing a basement wall that was part of the original construction of the
home because those walls are typically load bearing. - ANSWER✔✔-True
What can happen if high concentrations of refrigerant vapor are inhaled? - ANSWER✔✔-Nausea,
dizziness, heart irregularities, and unconsciousness.
When should the damper on a bypass humidifier be open? - ANSWER✔✔-Winter
What should you use to cut capillary tubing? - ANSWER✔✔-A triangular or knife-edge file.
How would you connect a voltmeter to a circuit for taking voltage readings? - ANSWER✔✔-
Connect the voltmeter in parallel with the circuit being tested.
True or false?
Since electric motors can have two, four, or more poles, the fewer the number of poles, the faster
the motor turns? - ANSWER✔✔-True
True or false?
In a tapped multi-speed motor driving a supply blower, changing the connected tap changes the
CFM even under no blower load. - ANSWER✔✔-True
What is an example of a wet bulb thermometer? - ANSWER✔✔-A conventional thermometer with
a moistened cloth wick covering its sensor.
How is electrical current measured? - ANSWER✔✔-Amperes
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
Answers
In HVACR terms, what is a feature? - ANSWER✔✔-A special characteristic of a product.
In HVACR terms, what is a benefit? - ANSWER✔✔-The value the customer receives from using
the feature
What type of temperature is often used by customers when discussing human comfort? -
ANSWER✔✔-Dry bulb
What is an honest person? - ANSWER✔✔-A person who is free from fraud or deception, credible,
and is marked with integrity. An honest person is fair in their dealings with other people.
What is the unit of electrical pressure? - ANSWER✔✔-Volt
How is line voltage represented on a ladder diagram? - ANSWER✔✔-The vertical lines on the sides
of the ladder.
What are humidifiers in heating systems used for? - ANSWER✔✔-To raise relative humidity and
increase human comfort.
What are some factors contribute to comfort in a home or building? - ANSWER✔✔-Temperature,
humidity, ventilation, cleanliness of the air.
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
, True or false?
Care should be taken before sawing a basement wall that was part of the original construction of the
home because those walls are typically load bearing. - ANSWER✔✔-True
What can happen if high concentrations of refrigerant vapor are inhaled? - ANSWER✔✔-Nausea,
dizziness, heart irregularities, and unconsciousness.
When should the damper on a bypass humidifier be open? - ANSWER✔✔-Winter
What should you use to cut capillary tubing? - ANSWER✔✔-A triangular or knife-edge file.
How would you connect a voltmeter to a circuit for taking voltage readings? - ANSWER✔✔-
Connect the voltmeter in parallel with the circuit being tested.
True or false?
Since electric motors can have two, four, or more poles, the fewer the number of poles, the faster
the motor turns? - ANSWER✔✔-True
True or false?
In a tapped multi-speed motor driving a supply blower, changing the connected tap changes the
CFM even under no blower load. - ANSWER✔✔-True
What is an example of a wet bulb thermometer? - ANSWER✔✔-A conventional thermometer with
a moistened cloth wick covering its sensor.
How is electrical current measured? - ANSWER✔✔-Amperes
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
