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AET Aircraft Electronics Technician VIP Practice Exam II
AET — The NCATT AET (Aircraft Electronics Technician) certification is administered by the National Center for Aerospace & Transportation Technologies (NCATT); the exam consists of approximately 100 multiple-choice questions covering avionics systems, electrical fundamentals, digital electronics, communication, navigation, and maintenance practices, with a 70% passing threshold.
29
Questions
150m
Time Limit
70.00%
To Pass
Question 1 of 29👑 VIP
During an ARINC 429 bus inspection, a technician measures the differential voltage between the A and B lines while the bus is transmitting. The HIGH state reads +9 V on the A line and −9 V on the B line. The NULL state reads 0 V on both lines. Which conclusion is MOST accurate regarding this measurement?
Questions 2–29 and full explanations are VIP-exclusive.