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card_76268.txt
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Text File
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1991-04-12
|
969b
|
42 lines
-- card: 76268 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 2707
-- name: #366
----- HyperTalk script -----
on openCard
global group,rightone
put 30 into group
put "C" into rightone
pass openCard
end openCard
-- part contents for background part 20
----- text -----
Question #30
-- part contents for background part 1
----- text -----
2I-8.1 A certain antenna has a feed-point impedance of 35 ohms. You want to use a 50-ohm-impedance coaxial cable to feed this antenna. What type of device will you need to connect between the antenna and the feed line?
-- part contents for background part 11
----- text -----
A balun
-- part contents for background part 27
----- text -----
An SWR bridge
-- part contents for background part 28
----- text -----
An impedance-matching device
-- part contents for background part 29
----- text -----
A low-pass filter
-- part contents for background part 43
----- text -----
Correct answer is C