(K)Element 3-73 Equipment Functions

Question 1

Some aircraft and avionics equipment operates with a prime power line frequency of 400 Hz. What is the principle advantage of a higher line frequency?

Answer 1

the magnetic devices in a 400 hz power supply as transformers, chokes and smaller and lighter than those used in 60 hz power supplies

Question 2

Aviation services used predominantly ___ microphones

Answer 2

Dynamic

Question 3

Typical airborne HF transmitters usaully provide a nominal RF power output to the antenna of ___ watts, compared with ____ watts RF output from a typical VHF transmitter

Answer 3

100, 20

Question 4

Before ground testing an aircraft RADAR, the operator should

Answer 4

ensure that the area in front of the antenna is clear of other maintenance personnel to avoid radiation hazards

Question 5

What type of antenna is ued in an aircrafts VHF VOR and LOCilizer installs?

Answer 5

horizontazlly polarized omnidirectional reception antenna

Question 6

What is the function of a commercial aircrafts SELCAL? SELCAL isa type of aircraft communivations

Answer 6

system where a ground based transmitter can call a selected aircraft or group of aircraft without the flight crew monitoring the ground station fequency