NATE Core Exam Questions with
Correct Answers 2026 updated.
What method of heat transfer does NOT require fluids or solids?
a. Conduction
b. Convection
c. Radiation
d. Evaporation - Answer c. Radiation
Capillary tubing should only be cut to length using a:
a. Triangular or knife-edge file
b. Pair of diagonal cutters
c. Hacksaw
d. Nibbling tool - Answer d. Nibbling tool
Before beginning any electrical checkout procedure, what step must always be taken after the
equipment disconnect or circuit breaker has been turned off?
a. Make sure you are always properly grounded
b. Check for the presence of voltage
c. Ohm from the equipment cabinet to ground to see if there is continuity
d. Reset all manual safety controls - Answer b. Check for the presence of voltage
When making a flare, the height of the tubing above the flaring block is critical because a flare
with too much starting height will:
a. Loosen over time
b. Slip through the flare nut
c. Not fit into the flare nut
Correct Answers 2026 updated.
What method of heat transfer does NOT require fluids or solids?
a. Conduction
b. Convection
c. Radiation
d. Evaporation - Answer c. Radiation
Capillary tubing should only be cut to length using a:
a. Triangular or knife-edge file
b. Pair of diagonal cutters
c. Hacksaw
d. Nibbling tool - Answer d. Nibbling tool
Before beginning any electrical checkout procedure, what step must always be taken after the
equipment disconnect or circuit breaker has been turned off?
a. Make sure you are always properly grounded
b. Check for the presence of voltage
c. Ohm from the equipment cabinet to ground to see if there is continuity
d. Reset all manual safety controls - Answer b. Check for the presence of voltage
When making a flare, the height of the tubing above the flaring block is critical because a flare
with too much starting height will:
a. Loosen over time
b. Slip through the flare nut
c. Not fit into the flare nut
