NATE Exam Core Essentials Questions and
Answers
1.The ability to utilize all types of communication skills is to
the HVACR technician.
a. not as important as "hands-on" technical skills
b. somewhat important
c. unimportant
d. very important
ANS d (very important)
2.It is important to be in filling out service orders so that office
staff, other technicians, and customers will know what work
you completed on the job.
a. clear
b. complete
c. concise
d. all of the above
ANS d (all of the above; clear, complete, concise)
3.When explaining to a customer that you have adjusted the
system charge, which of the following terms is most
appropriate?
,a. Freon
b. Gas
c. Juice
d. Refrigerant
ANS d (Refrigerant)
4.Listening carefully to what a customer is telling you .
a. can help you diagnose the problem
b. is a waste of time
c. is not necessary
d. often will only confuse you
ANS a (can help you diagnose the problem)
5.When you arrive at a service call and meet the customer, you
should .
a. ask questions first, then listen to what the customer has to say
b. listen to the customer first, then ask questions
c. avoid discussion with the customer
d. remind the customer that you are the professional and get
on with your work
ANS b (listen to the customer first, then ask questions)
6.What is the volume of a room that measures 10 ft by 20
ft with an 8-ft ceiling?
,a. 800 ft3
b. 1,600 ft3
c. 2,400 ft3
d. 3,200 ft3
ANS b (1,600 ft3)
7.What is the CFM requirements for an 1,800-ft2 house with 8-ft
ceilings, if five air changes per hour are needed?
a. 400 CFM
b. 1,200 CFM
c. 1,600 CFM
d. 2,400 CFM
ANS b (1,200 CFM)
8.What is the CFM requirement for an 2,400-ft2 house with 8-ft
ceilings, if five air changes per hour are needed?
a. 400 CFM
b. 1,200 CFM
c. 1,600 CFM
d. 2,400 CFM
ANS c (1,600 CFM)
9.What is the cross-sectional area of a 10-in round metal duct?
, a. 79 in2
b. 200 in2
c. 314 in2
d. 418 in2
Note
Area of a circle = Àx radius^2
ANS a (79 in2)
10.How fast does air with a velocity pressure of 0.20 in. w.g.
move through a round duct?
a. 400 ft/min
b. 1,200 ft/min
c. 1,600 ft/min
d. 1,800 ft/min
Note
Velocity = 4005 x (the square root of velocity pressure)
ANS d (1,800 ft/min)
11.How fast does air with a velocity pressure of 0.20 in w.g.
move through a square duct?
a. 400 ft/min
Answers
1.The ability to utilize all types of communication skills is to
the HVACR technician.
a. not as important as "hands-on" technical skills
b. somewhat important
c. unimportant
d. very important
ANS d (very important)
2.It is important to be in filling out service orders so that office
staff, other technicians, and customers will know what work
you completed on the job.
a. clear
b. complete
c. concise
d. all of the above
ANS d (all of the above; clear, complete, concise)
3.When explaining to a customer that you have adjusted the
system charge, which of the following terms is most
appropriate?
,a. Freon
b. Gas
c. Juice
d. Refrigerant
ANS d (Refrigerant)
4.Listening carefully to what a customer is telling you .
a. can help you diagnose the problem
b. is a waste of time
c. is not necessary
d. often will only confuse you
ANS a (can help you diagnose the problem)
5.When you arrive at a service call and meet the customer, you
should .
a. ask questions first, then listen to what the customer has to say
b. listen to the customer first, then ask questions
c. avoid discussion with the customer
d. remind the customer that you are the professional and get
on with your work
ANS b (listen to the customer first, then ask questions)
6.What is the volume of a room that measures 10 ft by 20
ft with an 8-ft ceiling?
,a. 800 ft3
b. 1,600 ft3
c. 2,400 ft3
d. 3,200 ft3
ANS b (1,600 ft3)
7.What is the CFM requirements for an 1,800-ft2 house with 8-ft
ceilings, if five air changes per hour are needed?
a. 400 CFM
b. 1,200 CFM
c. 1,600 CFM
d. 2,400 CFM
ANS b (1,200 CFM)
8.What is the CFM requirement for an 2,400-ft2 house with 8-ft
ceilings, if five air changes per hour are needed?
a. 400 CFM
b. 1,200 CFM
c. 1,600 CFM
d. 2,400 CFM
ANS c (1,600 CFM)
9.What is the cross-sectional area of a 10-in round metal duct?
, a. 79 in2
b. 200 in2
c. 314 in2
d. 418 in2
Note
Area of a circle = Àx radius^2
ANS a (79 in2)
10.How fast does air with a velocity pressure of 0.20 in. w.g.
move through a round duct?
a. 400 ft/min
b. 1,200 ft/min
c. 1,600 ft/min
d. 1,800 ft/min
Note
Velocity = 4005 x (the square root of velocity pressure)
ANS d (1,800 ft/min)
11.How fast does air with a velocity pressure of 0.20 in w.g.
move through a square duct?
a. 400 ft/min
