NATE Core questions and answers
2025\2026 A+ Grade
An air conditioning technician is working in the basement of a large B37public building. The technician
notices several unsafe and dangerous conditions. Of the following conditions that are noticed, which is
the most dangerous and should be reported immediately?
A: Gas leaking from a cracked pipe
B: An open sewer drain connection
C: The basement is unlighted
D: None of these are the technician's business
- correct answer A: Gas leaking from a cracked pipe
A service technician is returning home at 3 a.m. after completing an emergency service call. She notices
heavy smoke coming out of the top floor of a building. Which of the following should she do?
A: Make certain there is a fire
B: Enter the building and warn the occupants
C: Call the fire department
D: Attempt to extinguish the fire before it gets out of control
- correct answer C: Call the fire department
,An office worker frequently complains that his office is too cold or too warm. The best action to take is
to:
A: Ignore his complaints because they come from a habitual crank.
B: Inform the office worker that the air conditioning system was designed by an engineer who failed
miserably and you are unable to make a poorly designed system operate to meet the needs of the
occupants.
C: Investigate the problem and determine if an actual temperature control problem exists.
D: Pretend to make an adjustment at the thermostat and inform the office worker that the problem has
been solved.
- correct answer C: Investigate the problem and determine if an actual temperature control problem
exists.
A technician is taking evening classes in air balancing at the local college and needs photocopies of his
project to distribute to others in the class this evening. The technician is on a service call in the office
building of a long term customer and there are copy machines on every floor. Given the following
options, what should the technician do?
A: Find a copy machine that is not occupied, is in a remote area of the building and quickly make his
copies.
B: Locate someone who knows him and ask if he can make copies of his project.
C: Pretend he is making copies of paperwork related to his work for that customer and just make the
copies.
D: Make his copies and leave some money on the machine.
- correct answer B: Locate someone who knows him and ask if he can make copies of his project.
, While you are working at a construction site an electrician working nearby asks you to help him move a
pallet of electrical materials. Of the following, the best action for you to take is:
A: Inform the electrician that moving electrical materials is not the job of a sheet metal installer and he
should do it himself or find another electrician.
B: Help the electrician move the pallet and return to your own work.
C: Tell the electrician you will help him after you complete your own work.
D: Tell him your work is as important to you as his work is important to him, and continue with your
own work.
- correct answer B: Help the electrician move the pallet and return to your own work.
A large crane is setting an air conditioning system on the roof of a building. You are assigned the job of
preventing all traffic from entering the area where the crane is operating. You are not to allow any
vehicle to enter the area. You block the alley with your service van. Suddenly, an ambulance arrives with
its lights and siren on and obviously wants to enter the alley you are blocking. What is the best action to
take?
A: Get out of your van and calmly explain that you are not to allow any vehicle to pass until the crane
has finished the lift.
B: Move your service van and allow the ambulance to pass.
C: Get permission from the crane supervisor or operator before allowing the ambulance through.
D: Inform the ambulance driver that if you let him pass you will lose your job.
- correct answer B: Move your service van and allow the ambulance to pass.
The square root of 81 is:
2025\2026 A+ Grade
An air conditioning technician is working in the basement of a large B37public building. The technician
notices several unsafe and dangerous conditions. Of the following conditions that are noticed, which is
the most dangerous and should be reported immediately?
A: Gas leaking from a cracked pipe
B: An open sewer drain connection
C: The basement is unlighted
D: None of these are the technician's business
- correct answer A: Gas leaking from a cracked pipe
A service technician is returning home at 3 a.m. after completing an emergency service call. She notices
heavy smoke coming out of the top floor of a building. Which of the following should she do?
A: Make certain there is a fire
B: Enter the building and warn the occupants
C: Call the fire department
D: Attempt to extinguish the fire before it gets out of control
- correct answer C: Call the fire department
,An office worker frequently complains that his office is too cold or too warm. The best action to take is
to:
A: Ignore his complaints because they come from a habitual crank.
B: Inform the office worker that the air conditioning system was designed by an engineer who failed
miserably and you are unable to make a poorly designed system operate to meet the needs of the
occupants.
C: Investigate the problem and determine if an actual temperature control problem exists.
D: Pretend to make an adjustment at the thermostat and inform the office worker that the problem has
been solved.
- correct answer C: Investigate the problem and determine if an actual temperature control problem
exists.
A technician is taking evening classes in air balancing at the local college and needs photocopies of his
project to distribute to others in the class this evening. The technician is on a service call in the office
building of a long term customer and there are copy machines on every floor. Given the following
options, what should the technician do?
A: Find a copy machine that is not occupied, is in a remote area of the building and quickly make his
copies.
B: Locate someone who knows him and ask if he can make copies of his project.
C: Pretend he is making copies of paperwork related to his work for that customer and just make the
copies.
D: Make his copies and leave some money on the machine.
- correct answer B: Locate someone who knows him and ask if he can make copies of his project.
, While you are working at a construction site an electrician working nearby asks you to help him move a
pallet of electrical materials. Of the following, the best action for you to take is:
A: Inform the electrician that moving electrical materials is not the job of a sheet metal installer and he
should do it himself or find another electrician.
B: Help the electrician move the pallet and return to your own work.
C: Tell the electrician you will help him after you complete your own work.
D: Tell him your work is as important to you as his work is important to him, and continue with your
own work.
- correct answer B: Help the electrician move the pallet and return to your own work.
A large crane is setting an air conditioning system on the roof of a building. You are assigned the job of
preventing all traffic from entering the area where the crane is operating. You are not to allow any
vehicle to enter the area. You block the alley with your service van. Suddenly, an ambulance arrives with
its lights and siren on and obviously wants to enter the alley you are blocking. What is the best action to
take?
A: Get out of your van and calmly explain that you are not to allow any vehicle to pass until the crane
has finished the lift.
B: Move your service van and allow the ambulance to pass.
C: Get permission from the crane supervisor or operator before allowing the ambulance through.
D: Inform the ambulance driver that if you let him pass you will lose your job.
- correct answer B: Move your service van and allow the ambulance to pass.
The square root of 81 is:
