HVAC JOURNEYMAN CERTIFICATION EXAM
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
◉ (001) On a manifold gauge assembly, the vacuum hose is 3/8 inch and
the other hoses are 1/4 inch because larger sizes allow for. Answer:
fewer restrictions which makes it easier and quicker to pull a vacuum
◉ (001) Why should the manifold gauge assembly not be used when
measuring a vacuum? Answer: The gauge assembly reads inches of
mercury and is not accurate when pulling deep vacuums
◉ (002) While taking a reading with an infrared thermometer, what
happens as you get further from the object being measured? Answer:
The reading becomes more inaccurate
◉ (003) What part of the combustion analyzer gets placed into the
stack? Answer: The probe
◉ (003) What transfers flue gases from the boiler stack to the indicator
unit? Answer: A tube and hand bulb
, ◉ (003) The special slide-rule calculator and CO2 indicator are used to
determine. Answer: combustion efficiency and stack loss
◉ (004) What will occur if you choose more than one conductor to
measure when using a clamp on meter? Answer: Incorrect readings
◉ (004) A megohmmeter should never be used on a live circuit because.
Answer: it has its own power source and it will ruin the meter
◉ (004) A capacitance checker is used to test. Answer: a capacitor
◉ (005) A photo tachometer is used to read the. Answer: revolutions per
minute (RPM) of a spinning motor shaft
◉ (005) When using a stroboscope, the frequency and reading is
displayed for the technician when the object appears to be. Answer:
standing still and the rpm of the equipment matches
◉ (005) What pressure will be given if both tubes are connected to the
inclined manometer? Answer: Velocity pressure
◉ (005) Magnehelic pressure gauges were developed to. Answer:
overcome the disadvantages of the inclined and the inclined vertical
manometers
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
◉ (001) On a manifold gauge assembly, the vacuum hose is 3/8 inch and
the other hoses are 1/4 inch because larger sizes allow for. Answer:
fewer restrictions which makes it easier and quicker to pull a vacuum
◉ (001) Why should the manifold gauge assembly not be used when
measuring a vacuum? Answer: The gauge assembly reads inches of
mercury and is not accurate when pulling deep vacuums
◉ (002) While taking a reading with an infrared thermometer, what
happens as you get further from the object being measured? Answer:
The reading becomes more inaccurate
◉ (003) What part of the combustion analyzer gets placed into the
stack? Answer: The probe
◉ (003) What transfers flue gases from the boiler stack to the indicator
unit? Answer: A tube and hand bulb
, ◉ (003) The special slide-rule calculator and CO2 indicator are used to
determine. Answer: combustion efficiency and stack loss
◉ (004) What will occur if you choose more than one conductor to
measure when using a clamp on meter? Answer: Incorrect readings
◉ (004) A megohmmeter should never be used on a live circuit because.
Answer: it has its own power source and it will ruin the meter
◉ (004) A capacitance checker is used to test. Answer: a capacitor
◉ (005) A photo tachometer is used to read the. Answer: revolutions per
minute (RPM) of a spinning motor shaft
◉ (005) When using a stroboscope, the frequency and reading is
displayed for the technician when the object appears to be. Answer:
standing still and the rpm of the equipment matches
◉ (005) What pressure will be given if both tubes are connected to the
inclined manometer? Answer: Velocity pressure
◉ (005) Magnehelic pressure gauges were developed to. Answer:
overcome the disadvantages of the inclined and the inclined vertical
manometers
