HVAC Excellence 2026 | Real Questions
and Answers | A+ Verified
• Current flow is: -✓✓The flow of electrons in the circuit.
• Impedance is: -✓✓Opposition to alternating current flow.
• Like charges; -✓✓repel each other.
• Any material that will readily release electrons is called; -✓✓A
conductor
• The symbol for current is; -✓✓I
• Which of the following materials would be best suited for use as a
semi-conductor? -✓✓silicon
• The safety ground conductor is usually color coded; -✓✓green or
bare.
• An electron has; -✓✓a negative charge.
• Resistance is: -✓✓Opposition to current flow.
• How many watts of power are used by a heater operating at 240 volts
and drawing 5 amps? -✓✓1200 watts
• Which of the following meters must use its internal power to check a
load or circuit? -✓✓Ohmmeter
• In electrical wiring, a black colored wire in an alternating current
circuit usually indicates; -✓✓the hot conductor.
, • Fuses are sized by: -✓✓Volts & Amps
• 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? -
✓✓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? -✓✓2880 Watts
• Which of the following is generally considered to be within the
maximum allowable (plus or minus) supply voltage variation? -✓✓5%
• Capacitors are rated in -✓✓Microfarads & Volts.
• When testing a capacitor with an analog or digital ohmmeter, the meter
should; -✓✓measure low resistance then return to high reading.
• What is the term used to describe the output side of a transformer? -
✓✓Secondary side.
• One horsepower is equal to __________ watts. -✓✓746
• How much resistance must be placed in a 120 volt circuit in order to
limit the current to 2 amps? -✓✓60 Ohms
• A parallel circuit contains a 18 ohm and a 9 ohm resistor. The total
resistance equals; -✓✓6 ohms.
• In a series circuit, the voltage drop across each resistance (load) will. -
✓✓add up to equal the source voltage.
and Answers | A+ Verified
• Current flow is: -✓✓The flow of electrons in the circuit.
• Impedance is: -✓✓Opposition to alternating current flow.
• Like charges; -✓✓repel each other.
• Any material that will readily release electrons is called; -✓✓A
conductor
• The symbol for current is; -✓✓I
• Which of the following materials would be best suited for use as a
semi-conductor? -✓✓silicon
• The safety ground conductor is usually color coded; -✓✓green or
bare.
• An electron has; -✓✓a negative charge.
• Resistance is: -✓✓Opposition to current flow.
• How many watts of power are used by a heater operating at 240 volts
and drawing 5 amps? -✓✓1200 watts
• Which of the following meters must use its internal power to check a
load or circuit? -✓✓Ohmmeter
• In electrical wiring, a black colored wire in an alternating current
circuit usually indicates; -✓✓the hot conductor.
, • Fuses are sized by: -✓✓Volts & Amps
• 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? -
✓✓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? -✓✓2880 Watts
• Which of the following is generally considered to be within the
maximum allowable (plus or minus) supply voltage variation? -✓✓5%
• Capacitors are rated in -✓✓Microfarads & Volts.
• When testing a capacitor with an analog or digital ohmmeter, the meter
should; -✓✓measure low resistance then return to high reading.
• What is the term used to describe the output side of a transformer? -
✓✓Secondary side.
• One horsepower is equal to __________ watts. -✓✓746
• How much resistance must be placed in a 120 volt circuit in order to
limit the current to 2 amps? -✓✓60 Ohms
• A parallel circuit contains a 18 ohm and a 9 ohm resistor. The total
resistance equals; -✓✓6 ohms.
• In a series circuit, the voltage drop across each resistance (load) will. -
✓✓add up to equal the source voltage.
