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Practice over 1000+ GATE-level questions from this topic!

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Q#1 Waveguides GATE EC 2018 NAT +2 marks -0 marks

The cut-off frequency of  mode of an air filled rectangular waveguide having firmer dimensions is twice that of the dominant mode. When the waveguide is operated at a frequency which is 25% higher than the cut-off frequency of the dominant mode, the guide wavelength is found to be 4cm. The value of b. (in cm, correct to two decimal places) is ________

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