Exam (elaborations)
HVR 110 HVAC FINAL EXAM QUESTIONS AND ANSWERS 2024
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HVR 110 HVAC FINAL EXAM QUESTIONS AND ANSWERS 2024
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HVR 110 HVAC FINAL EXAMAmerican write gauge (AWG) - ANSWERS-Standard wire size is defined in the
United States by the___ ___ ___.
Locked rotor amperage - ANSWERS-The starting amperage of an electric motor is
usually stated as the___ ___ ___.
Direct ignition - ANSWERS-___ ___system use a spark igniter (direct spark
ignition) or a silicon carbide igniter (hot surface ignition) to light the main gas
burner directly.
Thermostat - ANSWERS-The temperature in any structure, regardless of its age,
location, or design, can be maintained at comfortable levels with a___.
Low voltage - ANSWERS-There are two basic types of thermostats used in the
industry today: the___ ___thermostat and the line voltage thermostat.
Remote bulb - ANSWERS-The ___ ___thermostat is commonly used to control the
temperature of any medium, whether liquid or vapor, in many applications.
Aquastats - ANSWERS-Thermostats that are immersed in water are sometimes
called___.
, Permanent - ANSWERS-Two types of magnets are used today: the electromagnet
and the ___ magnet.
Interlock - ANSWERS-Water chillers require an ___in the chiller control circuit to
ensure that the chilled water pump is operating before the water chiller
refrigeration unit operates.
Ventricular fibrillation - ANSWERS-When electricity flows near our through the
heart for only a short period of time, out can cause___ ___of the heart, in which
the heart only flutters instead of beats.
Magnetic field - ANSWERS-When electrons flow through a conductor in an electric
circuit a___ ___its created around that conductor.
Open - ANSWERS-
Furnace - ANSWERS-The air flow on most structures that use a fossil fuel for a
heat source have a___that would be used as an air supply.
Control loop - ANSWERS-Almost all control systems use a___to control the
temperature with in a given structure, space, or zone.
Troubleshooting - ANSWERS-A___chart is a graphical representation of a
troubleshooting procedure for a particular unit.
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