HVAC Electrical Test 2025/2026 Exam
Questions Marking Scheme New Update
1
| A+ Rated
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 best be suited for use as a semi-
conductor - 🧠 ANSWER ✔✔silicone
the safety ground conductor is usually color coded - 🧠 ANSWER ✔✔black
(or bare or green & yellow stripe)
An electron has - 🧠 ANSWER ✔✔a negative charge
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, resistance is - 🧠 ANSWER ✔✔opposition to current flow
How many watts of power are used by a heater operating at 460 volts and
2
drawing 5 amps? - 🧠 ANSWER ✔✔2300 watts
What type of meter uses its own battery? - 🧠 ANSWER ✔✔ohmmeter
in electrical wiring a black colored wire usually indicates - 🧠 ANSWER
✔✔the hot conductor
Fuses are sized by - 🧠 ANSWER ✔✔Volts & Amps
Two 120 volt incandescent light bulbs are wired in series, one is a 60 watt
bulb, the other is a 4 watt bulb. The result would be; - 🧠 ANSWER ✔✔Both
bulbs light
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
What is generally considered to be the maximum allowable (plus or minus)
supply voltage variation? - 🧠 ANSWER ✔✔5%
Capacitors are rated in: - 🧠 ANSWER ✔✔Microfarads & Volts
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
Questions Marking Scheme New Update
1
| A+ Rated
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 best be suited for use as a semi-
conductor - 🧠 ANSWER ✔✔silicone
the safety ground conductor is usually color coded - 🧠 ANSWER ✔✔black
(or bare or green & yellow stripe)
An electron has - 🧠 ANSWER ✔✔a negative charge
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, resistance is - 🧠 ANSWER ✔✔opposition to current flow
How many watts of power are used by a heater operating at 460 volts and
2
drawing 5 amps? - 🧠 ANSWER ✔✔2300 watts
What type of meter uses its own battery? - 🧠 ANSWER ✔✔ohmmeter
in electrical wiring a black colored wire usually indicates - 🧠 ANSWER
✔✔the hot conductor
Fuses are sized by - 🧠 ANSWER ✔✔Volts & Amps
Two 120 volt incandescent light bulbs are wired in series, one is a 60 watt
bulb, the other is a 4 watt bulb. The result would be; - 🧠 ANSWER ✔✔Both
bulbs light
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
What is generally considered to be the maximum allowable (plus or minus)
supply voltage variation? - 🧠 ANSWER ✔✔5%
Capacitors are rated in: - 🧠 ANSWER ✔✔Microfarads & Volts
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
