NATE EXAM: CORE ESSENTIALS / STUDY GUIDE / LATEST VERSION
/QUESTIONS AND CORRECT ANSWERS / A GRADE SCORE SOLUTION
COMPLETE EXAM FOR STUDY \\BRAND NEW 2025
Note: Velocity = 4005 x (the square root of velocity pressure)
d (1,800 ft/min)
How fast does air with a velocity pressure of 0.20 in w.g. move
through a square 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)
d (all of the above: honest, loyal, patient)
Customers depend on you to be ____.
a. honest
b. loyal
c. patient
d. all of the above
c (demonstrate system operation and describe basic maintenance
procedures to the customer)
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
d (All of the above: it can cut hard or soft drawn copper; it leaves no
metal shavings to contaminate the system; it produces a clean, square
cut.)
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
d. All of the above
a (soft drawn copper)
Spring-type benders may be used on ____.
a. soft drawn copper
b. hard drawn copper
c. all copper pipe
d. steel pipe
a (make a mechanical joint in tubing)
A flaring tool is used to ____.
a. make a mechanical joint in tubing
b. measure pipe diameters
c. remove burrs from piping
d. solder tubing without the use of coupling
d (solder tubing without the use of couplings)
,A swaging tool is used to ____.
a. cut copper tubing
b. make a mechanical joint in tubing
c. remove burrs from piping
d. solder tubing without the use of couplings
a (It is very accurate)
What is one of the advantages of a glass-stem thermometer?
a. It is very accurate
b. It is very durable
c. It comes with a digital readout
d. Non of the above
b (dry-bulb)
In discussing human comfort, the temperature most commonly
referred to is ____.
a. dew point
b. dry-bulb
c. wet-bulb
d. Fahrenheit
d (wet-bulb)
A sling psychrometer uses two glass-stem thermometers. One
measures dry-bulb, and the other measures ____.
a. dew point
b. enthalpy
, c. relative humidity
d. wet-bulb
b (Bourdon tube)
A standard refrigeration manifold uses what type of element to
measure pressure?
a. Bellows
b. Bourdon tube
c. Diaphragm
d. Spring
c (30 in. Hg to 350 psig)
What is the pressure range of a standard compound gauge on a
refrigerant manifold?
a. 0 to 350 psig
b. 0 to 500 psig
c. 30 in. Hg to 350 psig
d. 30 in. Hg to 500 psig
d (Vacuum pump)
What is the best tool for removing moisture and non-condensibles
from a system before adding refrigerant?
a. Manifold gauge
b. Micron analyzer
c. Recovery machine
d. Vacuum pump
b (microns)
/QUESTIONS AND CORRECT ANSWERS / A GRADE SCORE SOLUTION
COMPLETE EXAM FOR STUDY \\BRAND NEW 2025
Note: Velocity = 4005 x (the square root of velocity pressure)
d (1,800 ft/min)
How fast does air with a velocity pressure of 0.20 in w.g. move
through a square 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)
d (all of the above: honest, loyal, patient)
Customers depend on you to be ____.
a. honest
b. loyal
c. patient
d. all of the above
c (demonstrate system operation and describe basic maintenance
procedures to the customer)
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
d (All of the above: it can cut hard or soft drawn copper; it leaves no
metal shavings to contaminate the system; it produces a clean, square
cut.)
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
d. All of the above
a (soft drawn copper)
Spring-type benders may be used on ____.
a. soft drawn copper
b. hard drawn copper
c. all copper pipe
d. steel pipe
a (make a mechanical joint in tubing)
A flaring tool is used to ____.
a. make a mechanical joint in tubing
b. measure pipe diameters
c. remove burrs from piping
d. solder tubing without the use of coupling
d (solder tubing without the use of couplings)
,A swaging tool is used to ____.
a. cut copper tubing
b. make a mechanical joint in tubing
c. remove burrs from piping
d. solder tubing without the use of couplings
a (It is very accurate)
What is one of the advantages of a glass-stem thermometer?
a. It is very accurate
b. It is very durable
c. It comes with a digital readout
d. Non of the above
b (dry-bulb)
In discussing human comfort, the temperature most commonly
referred to is ____.
a. dew point
b. dry-bulb
c. wet-bulb
d. Fahrenheit
d (wet-bulb)
A sling psychrometer uses two glass-stem thermometers. One
measures dry-bulb, and the other measures ____.
a. dew point
b. enthalpy
, c. relative humidity
d. wet-bulb
b (Bourdon tube)
A standard refrigeration manifold uses what type of element to
measure pressure?
a. Bellows
b. Bourdon tube
c. Diaphragm
d. Spring
c (30 in. Hg to 350 psig)
What is the pressure range of a standard compound gauge on a
refrigerant manifold?
a. 0 to 350 psig
b. 0 to 500 psig
c. 30 in. Hg to 350 psig
d. 30 in. Hg to 500 psig
d (Vacuum pump)
What is the best tool for removing moisture and non-condensibles
from a system before adding refrigerant?
a. Manifold gauge
b. Micron analyzer
c. Recovery machine
d. Vacuum pump
b (microns)
