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One-ton Ac system is ? - Answer -12,000 BTU's
One tone of AC requires how many CFMs - Answer -400
Opposition to the flow of an alernating consumpton in A/c circuit - Answer -Power=1 X E X
power factor
R-22 i color coded - Answer -light green
the study of air and is properties is called - Answer -Psychometrics
the fitting used in duct work are? - Answer -plenum, extended plenum, Rducing plenum or
perimeter loop
Two types of non- conducting ladders - Answer -wood and fiberglass
how far should ladder stick out above a landing surface - Answer -3 feet
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,The easiest way to move equipment across a roof is to use - Answer -plywood and rollers
power tools that are not double insulted must have three prong plugs to ensure that the tool is
properly - Answer -grounded
the tool used to create internal threads is called a - Answer -tap
the tool to creat pipe threads on the outside of a pipe is called a - Answer -die
Fires that involve ordinary materials such as paper, cardboard, and wood are classified as Type
__________ fires. - Answer -A fires
In the electrical circuits, the _____ wire protects the operator - Answer -Grounding
Fires that involve electrical equipment are classified as Type _____ fires. - Answer -Type c fires
electrical power should always be shut off at the ____ or entrance panel and locked in an
approved manner when installing equipment - Answer -distribuation
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, a ________ is used to measure the amount of CO2 in the flue product - Answer -CO2/O2
indicator
After brazing a joint in a very tight location, the technician would use a(n) __________ to
determine if the joint is properly brazed. - Answer -Inspection mirror
the dial-type meter used to measure the pressure in a heating unit flue pipe is called a - Answer
-cordless drill
evacuting a system is accomplishedwith an _____ and helps to remove air and non-
conditioning and refrgeration applications - Answer -screw compressor
the four major components of a vapor compression refrigeration system are the compressor,
condenser, evaporator and - Answer -Metering Device
From a performance standpoint, a substitute for R-12 is ______. - Answer -R-134A
The ______ is referred to as kinetic displacement compresser - Answer -centrifugal compresser
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