Page 1 of 26
Nocti Hvac Exam 2026-2027 COMPLETE 300
QUESTIONS AND VERIFIED SOLUTIONS LATEST
UPDATE THIS YEAR
QUESTION: when reading blue prints for proper wall and duct location, the technician should
look at the ______ - ANSWER-Floor plan
QUESTION: When trouble shooting an air conditioning system, the operating pressures mare 40
psig on the low side and 116 in the high side, what would be the most likely problem? -
ANSWER-Refrigerant Leak
QUESTION: When trouble shooting an air conditioning system and you notice frost on the
suction line, what would be the problem? - ANSWER-Dirty air filter
QUESTION: An Hvac system that depends on the temperatures below the ground surface as an
operation factor is a/an______? - ANSWER-geothermal heat pump
,Page 2 of 26
QUESTION: The best tool to open and close the system access valve on a refrigeration system is
the wrench. - ANSWER-Geothermal heat pump
QUESTION: when pressure testing a completed copper tubing assembly with pressurized
nitrgen cylinders should - ANSWER-always be used with a regulator
QUESTION: a 14-gauge soild copper wire would require____amp circuit protection - ANSWER-
15 amps
QUESTION: in a 24V circuit containing a switch and coil, it will read 24V at the coil if the -
ANSWER-switched is closed
QUESTION: A theremocouple produces _______ when heat is applied - ANSWER-DC voltage
QUESTION: in 120VC AC circuit, if the total circuit draws 5 amps the wattage is - ANSWER-600
QUESTION: Capacitors are rated in - ANSWER-Volts and micro farads
, Page 3 of 26
QUESTION: The refrigerant enter the condenser as a - ANSWER-High pressure vapor
QUESTION: the compressor's main function is to - ANSWER-create presssure diffrence
QUESTION: scroll compressors are cooled by Ac and - ANSWER-Suction vaper
QUESTION: what tool is used to check the gas pressure - ANSWER-Manometers
QUESTION: incomplete combustion produces - ANSWER-carbon monoxide
QUESTION: a sub- base of a T-stat should be mounted - ANSWER-level
QUESTION: For complete combustion in a boiler or furnance to occur,_______ should _____ be
present - ANSWER-Oxygen, Spark, and fuel
Nocti Hvac Exam 2026-2027 COMPLETE 300
QUESTIONS AND VERIFIED SOLUTIONS LATEST
UPDATE THIS YEAR
QUESTION: when reading blue prints for proper wall and duct location, the technician should
look at the ______ - ANSWER-Floor plan
QUESTION: When trouble shooting an air conditioning system, the operating pressures mare 40
psig on the low side and 116 in the high side, what would be the most likely problem? -
ANSWER-Refrigerant Leak
QUESTION: When trouble shooting an air conditioning system and you notice frost on the
suction line, what would be the problem? - ANSWER-Dirty air filter
QUESTION: An Hvac system that depends on the temperatures below the ground surface as an
operation factor is a/an______? - ANSWER-geothermal heat pump
,Page 2 of 26
QUESTION: The best tool to open and close the system access valve on a refrigeration system is
the wrench. - ANSWER-Geothermal heat pump
QUESTION: when pressure testing a completed copper tubing assembly with pressurized
nitrgen cylinders should - ANSWER-always be used with a regulator
QUESTION: a 14-gauge soild copper wire would require____amp circuit protection - ANSWER-
15 amps
QUESTION: in a 24V circuit containing a switch and coil, it will read 24V at the coil if the -
ANSWER-switched is closed
QUESTION: A theremocouple produces _______ when heat is applied - ANSWER-DC voltage
QUESTION: in 120VC AC circuit, if the total circuit draws 5 amps the wattage is - ANSWER-600
QUESTION: Capacitors are rated in - ANSWER-Volts and micro farads
, Page 3 of 26
QUESTION: The refrigerant enter the condenser as a - ANSWER-High pressure vapor
QUESTION: the compressor's main function is to - ANSWER-create presssure diffrence
QUESTION: scroll compressors are cooled by Ac and - ANSWER-Suction vaper
QUESTION: what tool is used to check the gas pressure - ANSWER-Manometers
QUESTION: incomplete combustion produces - ANSWER-carbon monoxide
QUESTION: a sub- base of a T-stat should be mounted - ANSWER-level
QUESTION: For complete combustion in a boiler or furnance to occur,_______ should _____ be
present - ANSWER-Oxygen, Spark, and fuel
