1|Page
HVR 110 HVAC FINAL EXAM LATEST WITH
ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS ALREADY GRADED A+ 100%
GUARANTEED PASS!
A thermostat that can operate two or three circuits in
sequence or vary heat production and cooling capacity
is a _____ thermometer. - .....ANSWER ...✔✔
Multistage
A thermostat that operates using either 120 Vac or 240
Vac is called a _____ thermostat. - .....ANSWER
...✔✔ Line-voltage
Which of the following thermostats has been generally
phased out because it depends on a standing pilot light?
- .....ANSWER ...✔✔ Millivolt thermostat
Wireless thermostats _____. - .....ANSWER ...✔✔
May interface with Wi-Fi to mobile devices
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Cooling thermostats use cooling anticipators to
compensate for ______. - .....ANSWER ...✔✔
Chillwave
Heat anticipators are used to help reduce or eliminate
_____. - .....ANSWER ...✔✔ System overshoot
The primary part of a thermostat that reacts to
temperature change is the _____. - .....ANSWER
...✔✔ Sensing element
Low-voltage thermostats operate at _____, which is
supplied by step-down transformers. - .....ANSWER
...✔✔ 24 Vac
A thermostat that operates a small solenoid valve
powered by a thermocouple is a(n) _____
thermostat. - .....ANSWER ...✔✔ Millivolt
If a customer is interested in automatic control of an
HVAC system during different days and times of the
day, recommend installing a _____
thermostat. - .....ANSWER ...✔✔ Programmable
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Thermostats often have automatic maintenance alerts
that are typically used for the following reasons, except
_____. - .....ANSWER ...✔✔ Compressor replacement
The primary energy-savings benefit of free cooling is
that the _____ does not run. - .....ANSWER ...✔✔
Blower
Enthalpy control only allows free cooling to run when
_____ is low enough. - .....ANSWER ...✔✔ Outdoor
humidity
The main method of controlling zones in a forced-air
HVAC system is through the use of _____. - .....ANSWER
...✔✔ Dampers
To maintain sufficient airflow through an air handler
when only some of the zones in a forced-air system are
calling for cooling, a(n)_____ is used. - .....ANSWER
...✔✔ Bypass damper
With power applied, a voltage measurement across a
low-voltage thermostat switch that is closed should read
about _____ - .....ANSWER ...✔✔ 0 V
, 4|Page
With power applied, a voltage measurement across a
line-voltage thermostat switch that is open should read
about ____. - .....ANSWER ...✔✔ 120 Vac or 240
Vac
To ensure that a multistage HVAC system is operating at
full cooling capacity, measure voltage across terminals R
and ____ in the thermostat. - .....ANSWER ...✔✔ Y2
If the individual voltage measurement across each of the
electrical loads powered by a step-down transformer in
a forced-air heating and cooling system is less than 24
Vac, then the problem is most likely the _____. -
.....ANSWER ...✔✔ Transformer
When a heat pump is operating in heating mode, the
outdoor coil functions as a(n) _____ by absorbing heat.
- .....ANSWER ...✔✔ Evaporator
Which of the following statements about a heat pump
operating in cooling mode is false?
A. The compressor pumps high-pressure refrigerant
vapor into the indoor coil
HVR 110 HVAC FINAL EXAM LATEST WITH
ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS ALREADY GRADED A+ 100%
GUARANTEED PASS!
A thermostat that can operate two or three circuits in
sequence or vary heat production and cooling capacity
is a _____ thermometer. - .....ANSWER ...✔✔
Multistage
A thermostat that operates using either 120 Vac or 240
Vac is called a _____ thermostat. - .....ANSWER
...✔✔ Line-voltage
Which of the following thermostats has been generally
phased out because it depends on a standing pilot light?
- .....ANSWER ...✔✔ Millivolt thermostat
Wireless thermostats _____. - .....ANSWER ...✔✔
May interface with Wi-Fi to mobile devices
,2|Page
Cooling thermostats use cooling anticipators to
compensate for ______. - .....ANSWER ...✔✔
Chillwave
Heat anticipators are used to help reduce or eliminate
_____. - .....ANSWER ...✔✔ System overshoot
The primary part of a thermostat that reacts to
temperature change is the _____. - .....ANSWER
...✔✔ Sensing element
Low-voltage thermostats operate at _____, which is
supplied by step-down transformers. - .....ANSWER
...✔✔ 24 Vac
A thermostat that operates a small solenoid valve
powered by a thermocouple is a(n) _____
thermostat. - .....ANSWER ...✔✔ Millivolt
If a customer is interested in automatic control of an
HVAC system during different days and times of the
day, recommend installing a _____
thermostat. - .....ANSWER ...✔✔ Programmable
,3|Page
Thermostats often have automatic maintenance alerts
that are typically used for the following reasons, except
_____. - .....ANSWER ...✔✔ Compressor replacement
The primary energy-savings benefit of free cooling is
that the _____ does not run. - .....ANSWER ...✔✔
Blower
Enthalpy control only allows free cooling to run when
_____ is low enough. - .....ANSWER ...✔✔ Outdoor
humidity
The main method of controlling zones in a forced-air
HVAC system is through the use of _____. - .....ANSWER
...✔✔ Dampers
To maintain sufficient airflow through an air handler
when only some of the zones in a forced-air system are
calling for cooling, a(n)_____ is used. - .....ANSWER
...✔✔ Bypass damper
With power applied, a voltage measurement across a
low-voltage thermostat switch that is closed should read
about _____ - .....ANSWER ...✔✔ 0 V
, 4|Page
With power applied, a voltage measurement across a
line-voltage thermostat switch that is open should read
about ____. - .....ANSWER ...✔✔ 120 Vac or 240
Vac
To ensure that a multistage HVAC system is operating at
full cooling capacity, measure voltage across terminals R
and ____ in the thermostat. - .....ANSWER ...✔✔ Y2
If the individual voltage measurement across each of the
electrical loads powered by a step-down transformer in
a forced-air heating and cooling system is less than 24
Vac, then the problem is most likely the _____. -
.....ANSWER ...✔✔ Transformer
When a heat pump is operating in heating mode, the
outdoor coil functions as a(n) _____ by absorbing heat.
- .....ANSWER ...✔✔ Evaporator
Which of the following statements about a heat pump
operating in cooling mode is false?
A. The compressor pumps high-pressure refrigerant
vapor into the indoor coil
