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card_53941.txt
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Text File
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1991-04-08
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1KB
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42 lines
-- card: 53941 from stack: in
-- bmap block id: 0
-- flags: 4000
-- background id: 7720
-- name: #176
----- HyperTalk script -----
on openCard
global group,rightone
put 18 into group
put "B" into rightone
pass openCard
end openCard
-- part contents for background part 20
----- text -----
Question #18
-- part contents for background part 1
----- text -----
4BD-4.9 Why is an antenna system with a cardioid pattern desirable for a direction-finding system?
-- part contents for background part 11
----- text -----
The broad side responses of the cardioid pattern can be aimed at the desired station
-- part contents for background part 27
----- text -----
The deep null of the cardioid pattern can be aimed at the desired station
-- part contents for background part 28
----- text -----
The sharp peak response of the cardioid pattern can pinpoint the direction of the desired station
-- part contents for background part 29
----- text -----
The high radiation angle of the cardioid pattern is useful for short-distance direction finding
-- part contents for background part 43
----- text -----
Correct answer is B