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card_100895.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: 100895 from stack: in
-- bmap block id: 0
-- flags: 4000
-- background id: 7720
-- name: #328
----- HyperTalk script -----
on openCard
global group,rightone
put 31 into group
put "D" into rightone
pass openCard
end openCard
-- part contents for background part 20
----- text -----
Question #31
-- part contents for background part 1
----- text -----
4BG-4B.10 How can selectivity be achieved in the IF circuitry of a communications receiver?
-- part contents for background part 11
----- text -----
Incorporate a means of varying the supply voltage to the local oscillator circuitry
-- part contents for background part 27
----- text -----
Replace the standard JFET mixer with a bipolar transistor followed by a capacitor of the proper value
-- part contents for background part 28
----- text -----
Remove AGC action from the IF stage and confine it to the audio stage only
-- part contents for background part 29
----- text -----
Incorporate a high-Q filter
-- part contents for background part 43
----- text -----
Correct answer is D