Nate practice exam (2025) QUESTIONS AND (DETAILED ANSWERS)
WITH COMPLETE SOLUTIONS
A "cross break" or a creation of an angle on all four sides of a
rectangular section of metal duct will increase rigidity and reduce
vibration. - ✔✔True
A chase is: - ✔✔a groove that goes through the floor to accommodate
pipes or ducts.
A grille is equipped with an air volume control device. - ✔✔False
A load is a device that uses electricity to do some type of work.
Examples of loads are motors, heaters, lights, a relay coil, and a
contactor coil. - ✔✔True
A measured value of infinite resistance (OL) indicates which of the
following? - ✔✔An open circuit
A section of ductwork in which supply air is available for distribution
is called: - ✔✔a supply plenum.
After inserting two drives to connect two sections of ductwork
together, the technician should bend the ends of the drives over the
duct. - ✔✔True
,After installing manifold gauges on a unit, what must you first do? -
✔✔Purge the hoses
Amps - ✔✔electrical current
An airhandler paired with A/C or heat pump installed in an attic must
have a secondary condensate drain line. Where should the secondary
drain line be connected? - ✔✔To a location where someone would
see if it was leaking
An electrical multimeter can measure which of the following? -
✔✔Continuity, Resistance, AC and DC voltage
An HVAC system that is oversized for the load would cause what to
happen? - ✔✔The system will short cycle
An undersized electrical conductor under a load can make the
electrical wiring: - ✔✔overheat
As outdoor temperatures decrease, the heat pump capacity in heating
mode is changed. How? - ✔✔Also decreases
Avation Snips - ✔✔Cutting sheet metal
, Beam - ✔✔It runs parallel with the ceiling, is exposed and acts as a
central support
Bridging - ✔✔A brace made of wood or metal pieces placed diagonally
between the floor joists
BTU= - ✔✔weight x change in temperature (Fahrenheit)
Causes of noise complaints include: (check all that apply) - ✔✔Loud
equipment, Too much air moving past the damper, The damper not
closed all the way.
Ceiling joist - ✔✔Run parallel from wall to wall, and rest directly on
the top plate
Center Punch - ✔✔Marks the center of a hole for drilling
Circuit - ✔✔A complete path that electricity flows through
Closed Switch - ✔✔0V
Compressor - ✔✔serves as a pump, circulating refrigerant
WITH COMPLETE SOLUTIONS
A "cross break" or a creation of an angle on all four sides of a
rectangular section of metal duct will increase rigidity and reduce
vibration. - ✔✔True
A chase is: - ✔✔a groove that goes through the floor to accommodate
pipes or ducts.
A grille is equipped with an air volume control device. - ✔✔False
A load is a device that uses electricity to do some type of work.
Examples of loads are motors, heaters, lights, a relay coil, and a
contactor coil. - ✔✔True
A measured value of infinite resistance (OL) indicates which of the
following? - ✔✔An open circuit
A section of ductwork in which supply air is available for distribution
is called: - ✔✔a supply plenum.
After inserting two drives to connect two sections of ductwork
together, the technician should bend the ends of the drives over the
duct. - ✔✔True
,After installing manifold gauges on a unit, what must you first do? -
✔✔Purge the hoses
Amps - ✔✔electrical current
An airhandler paired with A/C or heat pump installed in an attic must
have a secondary condensate drain line. Where should the secondary
drain line be connected? - ✔✔To a location where someone would
see if it was leaking
An electrical multimeter can measure which of the following? -
✔✔Continuity, Resistance, AC and DC voltage
An HVAC system that is oversized for the load would cause what to
happen? - ✔✔The system will short cycle
An undersized electrical conductor under a load can make the
electrical wiring: - ✔✔overheat
As outdoor temperatures decrease, the heat pump capacity in heating
mode is changed. How? - ✔✔Also decreases
Avation Snips - ✔✔Cutting sheet metal
, Beam - ✔✔It runs parallel with the ceiling, is exposed and acts as a
central support
Bridging - ✔✔A brace made of wood or metal pieces placed diagonally
between the floor joists
BTU= - ✔✔weight x change in temperature (Fahrenheit)
Causes of noise complaints include: (check all that apply) - ✔✔Loud
equipment, Too much air moving past the damper, The damper not
closed all the way.
Ceiling joist - ✔✔Run parallel from wall to wall, and rest directly on
the top plate
Center Punch - ✔✔Marks the center of a hole for drilling
Circuit - ✔✔A complete path that electricity flows through
Closed Switch - ✔✔0V
Compressor - ✔✔serves as a pump, circulating refrigerant
