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INTRO TO HVAC EXAM QUESTIONS AND ANSWERS
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INTRO TO HVAC EXAM QUESTIONS AND ANSWERS
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INTRO TO HVAC EXAM QUESTIONS AND ANSWERSWhich of these heating methods is most commonly used as a heat source in cold
climates? - Answers -Natural gas furnaces
Which of the following is a device used to maintain indoor air quality? - Answers -
Ultraviolet light
The purpose of an evaporator in a refrigeration cycle is to - Answers -transfer heat from
the air to the refrigerant
Heat can be transferred from a refrigerant to the outdoors on a hot day because the -
Answers -refrigerant is warmer than the out door air
The expansion valve in the mechanical refrigeration system - Answers -provides
pressure drop
Oxygen is never used to purge an Hvac system because - Answers -an explosion could
occur under a certain conditions
Which of these devices is used for energy conservation? - Answers -Heat recovery
ventilator
In order to reduce duct leakage, ducts should be sealed with - Answers -mastic
If a refrigerant is removed from a system and held in a storage tank for return to the
same system, it is said to have been - Answers -recovered
Local building codes are based on the - Answers -International Building Code
Refusing to cut corners on a job is a example of - Answers -honesty
Speaking well of your employer to others is an example of - Answers -loyalty
How many hours each year does a typical apprenticeship trainee spend in the OJL? -
Answers -2,000
A company that would respond to a service request for a chiller would most likely be -
Answers -a mechanical contractor
An employee who works as a test technician most likely works for a - Answers –
manufacturer
In a common household forced-air furnace, heat is transferred from - Answers -The heat
exchangers to the air.
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