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card_74827.txt
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Text File
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1991-04-08
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806b
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38 lines
-- card: 74827 from stack: in
-- bmap block id: 0
-- flags: 4000
-- background id: 4601
-- name: #260
----- HyperTalk script -----
on openCard
global group,rightone
put 23 into group
put "B" into rightone
pass openCard
end openCard
-- part contents for background part 20
----- text -----
Question #23
-- part contents for background part 1
----- text -----
3BI-5.2 What is the feed-point impedance of a quarter-wavelength vertical HF antenna with a horizontal ground plane?
-- part contents for background part 11
----- text -----
Approximately 18 ohms
-- part contents for background part 27
----- text -----
Approximately 36 ohms
-- part contents for background part 28
----- text -----
Approximately 52 ohms
-- part contents for background part 29
----- text -----
Approximately 72 ohms