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The ESA is more _________ since it has no moving parts.(a) Prone to failure(b) Powerful(c) Reliable(d) AccurateI have been asked this question in an internship interview.The origin of the question is Electronic Scanned Array Radar in chapter Surveillance Systems, Mapping and Multimode Radars of Avionics

Answer» RIGHT choice is (c) Reliable

Easiest explanation: The ANTENNA reliability is dramatically improved in an ESA since there is no MOVING parts present. The ANTENNAS face one direction but the radar beam can be STEERED electronically to a very wide angle.


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