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card_39389.txt
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Text File
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1991-04-08
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894b
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38 lines
-- card: 39389 from stack: in
-- bmap block id: 0
-- flags: 4000
-- background id: 4601
-- name: #124
----- HyperTalk script -----
on openCard
global group,rightone
put 12 into group
put "D" into rightone
pass openCard
end openCard
-- part contents for background part 20
----- text -----
Question #12
-- part contents for background part 1
----- text -----
3BD-4.2 Why is neutralization in some vacuum tube amplifiers necessary?
-- part contents for background part 11
----- text -----
To reduce the limits of loaded Q in practical tuned circuits
-- part contents for background part 27
----- text -----
To reduce grid to cathode leakage
-- part contents for background part 28
----- text -----
To cancel acid build-up caused by thorium oxide gas
-- part contents for background part 29
----- text -----
To cancel oscillation caused by the effects of interelectrode capacitance