NATE Exam: Core Essentials 121
COMPLETE SOLUTIONS
NATE Exam: Core Essentials 121
COMPLETE SOLUTIONS
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 - ANSWER d (very important)
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 - ANSWER d (all of the above: clear, complete, concise)
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 - ANSWER d (Refrigerant)
Listening carefully to what a customer is telling you ____.
,NATE Exam: Core Essentials 121
COMPLETE SOLUTIONS
a. can help you diagnose the problem
b. is a waste of time
c. is not necessary
d. often will only confuse you - ANSWER a (can help you diagnose the problem)
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 - ANSWER b (listen to
the customer first, then ask questions)
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 - ANSWER b (1,600 ft3)
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 - ANSWER b (1,200 CFM)
,NATE Exam: Core Essentials 121
COMPLETE SOLUTIONS
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 - ANSWER c (1,600 CFM)
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 = π x radius^2 - ANSWER a (79 in2)
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) - ANSWER d (1,800 ft/min)
How fast does air with a velocity pressure of 0.20 in w.g. move through a square duct?
, NATE Exam: Core Essentials 121
COMPLETE SOLUTIONS
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) - ANSWER d (1,800 ft/min)
Customers depend on you to be ____.
a. honest
b. loyal
c. patient
d. all of the above - ANSWER d (all of the above: honest, loyal, patient)
Before leaving a service call, you should be sure to ____.
a. ask the customer for referrals
b. collect payment in cash if possible
c. demonstrate system operation and describe basic maintenance procedures to the customer
d. try to sell the customer an equipment upgrade - ANSWER c (demonstrate system operation and
describe basic maintenance procedures to the customer)
What is the advantage of using a tube cutter to cut copper pipe?
a. It can cut hard or soft drawn copper
b. It leaves no metal shavings to contaminate the system
c. It produces a clean, square cut
COMPLETE SOLUTIONS
NATE Exam: Core Essentials 121
COMPLETE SOLUTIONS
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 - ANSWER d (very important)
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 - ANSWER d (all of the above: clear, complete, concise)
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 - ANSWER d (Refrigerant)
Listening carefully to what a customer is telling you ____.
,NATE Exam: Core Essentials 121
COMPLETE SOLUTIONS
a. can help you diagnose the problem
b. is a waste of time
c. is not necessary
d. often will only confuse you - ANSWER a (can help you diagnose the problem)
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 - ANSWER b (listen to
the customer first, then ask questions)
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 - ANSWER b (1,600 ft3)
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 - ANSWER b (1,200 CFM)
,NATE Exam: Core Essentials 121
COMPLETE SOLUTIONS
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 - ANSWER c (1,600 CFM)
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 = π x radius^2 - ANSWER a (79 in2)
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) - ANSWER d (1,800 ft/min)
How fast does air with a velocity pressure of 0.20 in w.g. move through a square duct?
, NATE Exam: Core Essentials 121
COMPLETE SOLUTIONS
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) - ANSWER d (1,800 ft/min)
Customers depend on you to be ____.
a. honest
b. loyal
c. patient
d. all of the above - ANSWER d (all of the above: honest, loyal, patient)
Before leaving a service call, you should be sure to ____.
a. ask the customer for referrals
b. collect payment in cash if possible
c. demonstrate system operation and describe basic maintenance procedures to the customer
d. try to sell the customer an equipment upgrade - ANSWER c (demonstrate system operation and
describe basic maintenance procedures to the customer)
What is the advantage of using a tube cutter to cut copper pipe?
a. It can cut hard or soft drawn copper
b. It leaves no metal shavings to contaminate the system
c. It produces a clean, square cut
