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Electronics ETA AC Certification Practice Exam Questions and Answers

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In alternating current: A. current flow alternates back and forth B. voltage alternates positive and negative C. resistance changes between high and low D. A and B above D. A and B above Historically, DC came before AC because: A. DC is more useful B. DC is easier to transmit over long distances C. AC requires more advanced technology D. AC is less efficient C. AC requires more advanced technology An AC voltage source schematic symbol: A. is a sine wave in a circle B. represents an idealized voltage source C. is considered to have zero internal resistance D. all of the above D. all of the above The opposition to current flow presented by capacitors and inductors is called: A. Resistance B. Reactance C. Impedance D. Reluctance D. Reluctance Impedance is: A. any combination of resistance and reactance B. another name for resistance C. another name for reactance D. measured in watt-hours A. any combination of resistance and reactance AC voltage, current, resistance and power are often indicated by: A. lower-case letters B. smaller-type letters C. Greek symbols D. letters in parentheses A. lower-case letters

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  • electronics eta ac certification practice exam que
  • in alternating current a current flow alterna
  • historically dc came before ac because a dc

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