HVAC Electric Review 2 Questions & Answers 100% Correct!

Resistance is? - ANSWEROpposition to current flow An electron has? - ANSWERA negative charge Impedance is? - ANSWEROpposition to alternating current flow Current flow is? - ANSWERElectron flow in a circuit The safety ground conductor is usually color coded? - ANSWERGreen or bare. Like charges? - ANSWERRepel each other The symbol for current is? - ANSWERI Any material that will readily release electrons is called? - ANSWERA conductor Which of the following materials would be best suited for use as a semi-conductor? - ANSWERSilicon How many watts of power are used by a heater operating at 240 volts and drawing 5 amps? - ANSWER1200 watts Three defrost heaters, each 15 ohms are wired in parallel to a 120 volt power supply. How many watts of power will be used? - ANSWER2880 Watts What would be the result, if a 24 volt, 20-ohm low voltage contractor coil were wired in series with a 24 volt, 200-0hm control relay coil? - ANSWEROnly the control relay would operate. Fuses are sized by? - ANSWERVolts & Amps Which of the following is generally considered to be within the maximum allowable (plus or