Recent Exam 2026-2027 Actual Complete Real Exam
Questions And Correct Answers (Verified Answers)
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The electron _____________________- - ANSWER -Has a
negative electrical
charge.
The Ohmmeter __________________________ - ANSWER -
has it's own
electrical
power
The anemometer measures the __________________ - ANSWER
-flow of air
__________________ is the largest diameter of the following
electrical wire
size 6A and size 6B - ANSWER -Wire
size No 4.
,_____________ Is the wire diameter of a 60 foot service cable
for a 1 1/2 ton
unit. - ANSWER -No 10
or 12
A generator producing 60 hertz of alternating current
_______________ -
ANSWER -revolves at
3600 rpm
The ________________ is that which converts AC to DC -
ANSWER -rectifier
The _____________ is that which converts DC to AC - ANSWER
-inverter
Three-phase motors can be operated by having
____________________ -
ANSWER -230 V on one phase and 115 V on
two phases
On a 3-ton air conditioner, the diameter required for the
aluminum service cable
when compared to copper, will be ________________ -
ANSWER -larger
A potential relay __________________________ - ANSWER
-Opens the
,switch on high voltage and closes on
no voltage.
A condensing unit rated at 8 decibels is
_______________________ -
ANSWER -reasonably
quiet.
1 watt equals _______________________ - ANSWER -3.41
BTU/hour
A secondary circuit (usually of lower voltage) used to control a
device that allows current to flow in the main circuit is called
_______________ - ANSWER
-a circuit pilot.
_______________ is the decibel range that is considered not
objectionable to
the human ear. - ANSWER -
0 – 90
On a normal fan center the ____________ are the two contacts
that could be
jumped to cause the condensing unit to come on. -
ANSWER -R and Y
On a normal fan center the ____________ are the two contacts
that could be
, jumped to cause the furnace blower to come on. -
ANSWER -R and G
_______________ are the two contacts that could be jumped to
cause the gas
burner to come on. - ANSWER -R
and W
When the central air is added to an existing furnace, which
includes an electronic air cleaner a ____________ should be
used at the fan centers. -
ANSWER -
DPDT
______________________________ before energizing a
newly installed
system - ANSWER -Always check for tight connections at
electrical terminals
The horsepower of electric motors that do not specify
horsepower ratings on the nameplate should be determined by
the ____________________ - ANSWER nameplate current and
voltage rating according to the phase.
Residential split system outdoor condensing units are
commonly wired with a ____________________ - ANSWER -208
volt / 240 volt single phase power supply.
A room thermostat should be mounted, if possible,
_________________ -