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1. A rectangular wave guide is designed to propagate at the dominant mode TE10 at a frequency of 5 GHz. The cut-off frequency is 0.8 of signal frequency. The ratio of the guide width to height is 2. The dimensions of the guide are
(A): 2.54 cm, 1.27 cm
(B): 3.75 cm, 1.875 cm
(C): 4 cm, 2 cm
(D): 8 cm, 4 cm
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By: guest on 02 Jun 2017 12.56 am
λc = 2a or ⇒ a = 3.75 cm Also, ∴ .
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