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HVAC EXCELLENCE EXAMS 2025 – HVAC
EXCELLENCE ELECTRICITY EXAM 2025 AND HVAC
AC EXAM 2025 EACH CONTAIN 100 PREP
QUESTIONS AND CORRECT ANSWERS (BRAND
NEW!)
Current flow is: - ...ANSWER...✓✓The flow of electrons in
the circuit.
Impedance is: - ...ANSWER...✓✓Opposition to alternating
current flow.
Like charges; - ...ANSWER...✓✓repel each other.
Any material that will readily release electrons is called;
- ...ANSWER...✓✓A conductor
The symbol for current is; - ...ANSWER...✓✓I
Which of the following materials would be best suited for
use as a semi-conductor? - ...ANSWER...✓✓silicon
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The safety ground conductor is usually color coded; -
...ANSWER...✓✓green or bare.
An electron has; - ...ANSWER...✓✓a negative charge.
Resistance is: - ...ANSWER...✓✓Opposition to current
flow.
How many watts of power are used by a heater operating
at 240 volts and drawing 5 amps? - ...ANSWER...✓✓1200
watts
Which of the following meters must use its internal power
to check a load or circuit? - ...ANSWER...✓✓Ohmmeter
In electrical wiring, a black colored wire in an alternating
current circuit usually indicates; - ...ANSWER...✓✓the hot
conductor.
Fuses are sized by: - ...ANSWER...✓✓Volts & Amps
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What would be the result, if a 24 volt, 20-ohm low voltage
conta ctor coil were wired in series with a 24 volt, 200-
ohm control relay coil? - ...ANSWER...✓✓Only the control
relay would operate.
Three defrost heaters, each 15 ohms are wired in parallel
to a 120 volt power supply. How many watts of power will
be used? - ...ANSWER...✓✓2880 Watts
Which of the following is generally considered to be
within the maximum allowable (plus or minus) supply
voltage variation? - ...ANSWER...✓✓5%
Capacitors are rated in - ...ANSWER...✓✓Microfarads &
Volts.
When testing a capacitor with an analog or digital
ohmmeter, the meter should; - ...ANSWER...✓✓measure
low resistance then return to high reading.
What is the term used to describe the output side of a
transformer? - ...ANSWER...✓✓Secondary side.
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One horsepower is equal to __________ watts. -
...ANSWER...✓✓746
How much resistance must be placed in a 120 volt circuit
in order to limit the current to 2 amps? -
...ANSWER...✓✓60 Ohms
A parallel circuit contains a 18 ohm and a 9 ohm resistor.
The total resistance equals; - ...ANSWER...✓✓6 ohms.
In a series circuit, the voltage drop across each
resistance (load) will. - ...ANSWER...✓✓add up to equal
the source voltage.
The total resistance of a parallel circuit will be; -
...ANSWER...✓✓less than the smallest resistance.
Which of the following statements about current is true? -
...ANSWER...✓✓Current flow will increase when voltage
increases.
HVAC EXCELLENCE EXAMS 2025 – HVAC
EXCELLENCE ELECTRICITY EXAM 2025 AND HVAC
AC EXAM 2025 EACH CONTAIN 100 PREP
QUESTIONS AND CORRECT ANSWERS (BRAND
NEW!)
Current flow is: - ...ANSWER...✓✓The flow of electrons in
the circuit.
Impedance is: - ...ANSWER...✓✓Opposition to alternating
current flow.
Like charges; - ...ANSWER...✓✓repel each other.
Any material that will readily release electrons is called;
- ...ANSWER...✓✓A conductor
The symbol for current is; - ...ANSWER...✓✓I
Which of the following materials would be best suited for
use as a semi-conductor? - ...ANSWER...✓✓silicon
,2|Page
The safety ground conductor is usually color coded; -
...ANSWER...✓✓green or bare.
An electron has; - ...ANSWER...✓✓a negative charge.
Resistance is: - ...ANSWER...✓✓Opposition to current
flow.
How many watts of power are used by a heater operating
at 240 volts and drawing 5 amps? - ...ANSWER...✓✓1200
watts
Which of the following meters must use its internal power
to check a load or circuit? - ...ANSWER...✓✓Ohmmeter
In electrical wiring, a black colored wire in an alternating
current circuit usually indicates; - ...ANSWER...✓✓the hot
conductor.
Fuses are sized by: - ...ANSWER...✓✓Volts & Amps
,3|Page
What would be the result, if a 24 volt, 20-ohm low voltage
conta ctor coil were wired in series with a 24 volt, 200-
ohm control relay coil? - ...ANSWER...✓✓Only the control
relay would operate.
Three defrost heaters, each 15 ohms are wired in parallel
to a 120 volt power supply. How many watts of power will
be used? - ...ANSWER...✓✓2880 Watts
Which of the following is generally considered to be
within the maximum allowable (plus or minus) supply
voltage variation? - ...ANSWER...✓✓5%
Capacitors are rated in - ...ANSWER...✓✓Microfarads &
Volts.
When testing a capacitor with an analog or digital
ohmmeter, the meter should; - ...ANSWER...✓✓measure
low resistance then return to high reading.
What is the term used to describe the output side of a
transformer? - ...ANSWER...✓✓Secondary side.
, 4|Page
One horsepower is equal to __________ watts. -
...ANSWER...✓✓746
How much resistance must be placed in a 120 volt circuit
in order to limit the current to 2 amps? -
...ANSWER...✓✓60 Ohms
A parallel circuit contains a 18 ohm and a 9 ohm resistor.
The total resistance equals; - ...ANSWER...✓✓6 ohms.
In a series circuit, the voltage drop across each
resistance (load) will. - ...ANSWER...✓✓add up to equal
the source voltage.
The total resistance of a parallel circuit will be; -
...ANSWER...✓✓less than the smallest resistance.
Which of the following statements about current is true? -
...ANSWER...✓✓Current flow will increase when voltage
increases.
