HVACR Practice Test Correct 100%(RATED A+)

What is the symbol for impedance? a. R b. I c. Z d. P - ANSWER z The safety ground conductor for A/C circuit is usually color coded ________. a. red b. green c. black d. white - ANSWER Green Resistance is _______. a. amperage b. electrical pressure c. opposition to current flow d. voltage applied to the circuit - ANSWER opposition to current flow How many watts of power are used by a heater operating at 480 volts and drawing 5 amps? a. 5 watts b. 96 watts c. 480 watts d. 2400 watts - ANSWER 2400 watts What type of meter uses its own power source? a. Wattmeter b. Voltmeter c. Ammeter d. Ohmmeter - ANSWER Ohmmeter Fuses are sized by: a. Volts and Amps b. Volts and Watts c. Amps and Watts d. Watts and Ohms - ANSWER Voltage and Amps Two 120 volt A/C incandescent light bulbs are wired in series; one is a 60 watt bulb and the other is a 4 watt bulb. The result would be _____. a. both bulbs light bright b. only the 4 watt bulb will light c. only the 60 watt bulb will light d. neither bulb will light - ANSWER only the 60 watt bulb will light What would the capacitance be if two capacitors are wired in parallel, one having 25 mfd rating and the other having 5 mfd rating. a. 125 mfd b. 30 mfd c.