Aircraft Electronics Technician AET - NCATT

NCATT Aircraft Electronics Technician (AET) Study Guide
o Capacitance is the amount of electrical charge that can be stored in a capacitor
under a given amount of electrical pressure (voltage)
o Capacitance causes the current to lead the applied voltage
• Capacitive Reactance (XC)
o See Basic Terms/Alternating Current (AC)
• Effective Value
o Value of sine-wave alternating current needed to produce the same amount of heat
as the value of the direct current
• Frequency
o See Basic Terms/Alternating Current (AC)
• Impedance (Z)
o See Basic Terms/Alternating Current (AC)
• Inductance
o Electrical characteristic of a conductor. Inductance causes voltage to be produced
when it is cut or crossed by lines of magnetic flux. Inductance causes the current
to lag the applied voltage
• Inductive Reactance (XL)
o See Basic Terms/Alternating Current (AC)
• Peak Voltage
o Voltage measured from zero voltage to the maximum number of volts generated
• Period
o Amount of time for one complete cycle of oscillation to take place
• Phase angle
o See Basic Terms/Alternating Current (AC)
• Power Factor
o See Basic Terms/Alternating Current (AC)
• Reactance
o Electrical characteristic of a conductor
• Reactance is opposition to AC flow by coils and capacitors
• Values are given in ohms
• Resonance
• Electrical characteristic of a conductor
• Resonance occurs in an electrical circuit when the inductive and capacitive reactance are
equal
• True Power
• See Basic Terms/Alternating Current (AC)
Copyright © 2012 by the National Center for Aerospace & Transportation Technologies. All rights reserved. Individuals may
download, print, and make copies of this document for their own personal use. Commercial use prohibited.
Page 13 of 60