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NCCER HVAC LEVEL 1 MODULE 1-5 EXAM QUESTIONS WITH COMPLETE ANSWERS
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NCCER HVAC LEVEL 1 MODULE 1-5 EXAM QUESTIONS WITH COMPLETE ANSWERS
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NCCER HVAC LEVEL 1 MODULE 1-5EXAM QUESTIONS WITH COMPLETE
ANSWERS
In a hydronic heating system, the heat transfer medium is _____ - Answer-Water
Ultraviolet light is the best method used to ______ - Answer-Control the growth of
bacteria
In the mechanical refrigeration cycle, the purpose of the evaporator is to _____ -
Answer-Transfer heat from the indoor air to the refrigerant
A defrost cycle is required in ________ - Answer-refrigeration system
Phosgene gas can be produced when some refrigerants are exposed to ____ - Answer-
A flame
Mastic is a material used to _____ - Answer-Seal ductwork
A mechanical contractor is a company that ______ - Answer-Specializes in the
installation and repair of air conditioning systems
Building permits are usually issued by the _____ - Answer-Local government
Keeping your employer's interest in mind is an example of______ - Answer-loyalty
The minimum number of annual classroom hours required for an apprenticeship is
_____ - Answer-75
Engineering students are most likely to be employed by _____ - Answer-Mechanical
contractors
In a common household forced air furnace, heat is transferred from the ______ -
Answer-heat exchangers to the air
Water is often used in heating systems as a _____ - Answer-heat exchange medium
Ventilation is concerned with ______ - Answer-THE INTRODUCTION OF FRESH AIR
TO CONTROL INDOOR AIR QUALITY
The growth of bacteria and other harmful organisms can be reduced or eliminated by
_____ - Answer-ultraviolet light
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