HVAC Electrical Test| 100 Questions | Correct Answers(RATED A+)

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 resistance is - ANSWER opposition to current flow How many watts of power are used by a heater operating at 460 volts and 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