Electronics Technicians Association (ETA) AC Certification Practice Exam Questions and Answers With Verified Solutions

Science Engineering Electrical Engineering

Electronics ETA AC Certification Practice
Exam


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
ero 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

The quadrants in a 4-quadrant X-Y graph are: A. 1, 2, 3, 4,
clockwise from upper right
B. A, B, C, D, clockwise from upper left
C. I, II, III, IV, counter-clockwise from upper left
D. I, II, III, IV, counter-clockwise from upper right


D. I, II, III, IV, counter-clockwise from upper right

A phasor is: A. an arrow with a specific magnitude and direction
B. often used to represent voltage or current
C. considered to be rotating counter-clockwise
D. all of the above