Fundamentals of waves and properties
UPDATED ACTUAL Exam Questions and
CORRECT Answers
What are antennas? - CORRECT ANSWER - Antennas are gateways through which an
information bearing signal travels to a remote location
What does a receiver antenna do? - CORRECT ANSWER - Is an EM wave sensor utilized
in important avionic communication systems
What systems are antennas used for? - CORRECT ANSWER - Voice/data communication
Radio navigation
GPS
What does it mean by antennas having complimentarity? - CORRECT ANSWER - A good
receiver antenna can be used as a good transmitter antenna
What do antennas convert? - CORRECT ANSWER - Antennas are transducers that
Convert electrical signals into EM waves ( transmitter )
Convert EM waves into electrical signals ( receiver )
How are EM waves produced? - CORRECT ANSWER - An oscillating current induces an
alternating magnetic field which is accompanied by an alternating electric field, called an
electromagnetic wave