EXAMBLUEPRINT STUDY RESOURCE
ACADEMIC • EXAM PREPARATION • REFERENCE
CDC 3E151 HVAC/R JOURNEYMAN
VOLUME 1 | PRACTICE QUESTIONS
AND COMPLETE STUDY GUIDE |
EXAM PREP | 100% VERIFIED
QUESTIONS AND ANSWERS 100% VERIFIED EXAM PREP
PREPARE WITH PURPOSE. REVIEW WITH CONFIDENCE.
EXAMBLUEPRINT | QUALITY STUDY RESOURCES
, (001) When using a halide leak detector, the bluish flame a refrigerant leak
turning green indicates
(001) On a manifold gauge assembly, the vacuum hose is 3/8 fewer restrictions which makes it easier and quicker to pull a vacuum
inch and the other hoses are 1/4 inch because larger sizes
allow for
(001) Why should the manifold gauge assembly not be used The gauge assembly reads inches of mercury and is not accurate when pulling deep
when measuring a vacuum? vacuums
(002) While taking a reading with an infrared thermometer, The reading becomes more inaccurate
what happens as you get further from the object being
measured?
(003) What part of the combustion analyzer gets placed into The probe
the stack?
(003) What transfers flue gases from the boiler stack to the A tube and hand bulb
indicator unit?
(003) The special slide-rule calculator and CO2 indicator are combustion efficiency and stack loss
used to determine
(004) What will occur if you choose more than one conductor Incorrect readings
to measure when using a clamp on meter?
(004) A megohmmeter should never be used on a live circuit it has its own power source and it will ruin the meter
because
(004) A capacitance checker is used to test a capacitor
(005) A photo tachometer is used to read the revolutions per minute (RPM) of a spinning motor shaft
(005) When using a stroboscope, the frequency and reading is standing still and the rpm of the equipment matches
displayed for the technician when the object appears to be
ACADEMIC • EXAM PREPARATION • REFERENCE
CDC 3E151 HVAC/R JOURNEYMAN
VOLUME 1 | PRACTICE QUESTIONS
AND COMPLETE STUDY GUIDE |
EXAM PREP | 100% VERIFIED
QUESTIONS AND ANSWERS 100% VERIFIED EXAM PREP
PREPARE WITH PURPOSE. REVIEW WITH CONFIDENCE.
EXAMBLUEPRINT | QUALITY STUDY RESOURCES
, (001) When using a halide leak detector, the bluish flame a refrigerant leak
turning green indicates
(001) On a manifold gauge assembly, the vacuum hose is 3/8 fewer restrictions which makes it easier and quicker to pull a vacuum
inch and the other hoses are 1/4 inch because larger sizes
allow for
(001) Why should the manifold gauge assembly not be used The gauge assembly reads inches of mercury and is not accurate when pulling deep
when measuring a vacuum? vacuums
(002) While taking a reading with an infrared thermometer, The reading becomes more inaccurate
what happens as you get further from the object being
measured?
(003) What part of the combustion analyzer gets placed into The probe
the stack?
(003) What transfers flue gases from the boiler stack to the A tube and hand bulb
indicator unit?
(003) The special slide-rule calculator and CO2 indicator are combustion efficiency and stack loss
used to determine
(004) What will occur if you choose more than one conductor Incorrect readings
to measure when using a clamp on meter?
(004) A megohmmeter should never be used on a live circuit it has its own power source and it will ruin the meter
because
(004) A capacitance checker is used to test a capacitor
(005) A photo tachometer is used to read the revolutions per minute (RPM) of a spinning motor shaft
(005) When using a stroboscope, the frequency and reading is standing still and the rpm of the equipment matches
displayed for the technician when the object appears to be
