-- card: 126837 from stack: in
-- bmap block id: 0
-- flags: 4000
-- background id: 7720
-- name: #426
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on openCard
  global group,rightone
  put 39 into group
  put "C" into rightone
  pass openCard
end openCard



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Question #39

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4BI-4C.1 How is circular polarization produced using linearly-polarized antennas?

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Stack two Yagis, fed 90 degrees out of phase, to form an array with the respective elements  in parallel planes

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Stack two Yagis, fed in phase, to form an array with respective elements in parallel planes

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Arrange two Yagis perpendicular to each other, with the driven elements in the same plane, and fed 90 degrees out of phase

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Arrange two Yagis perpendicular to each other, with the driven elements in the same plane, and fed in phase

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Correct answer is C