The rectangular air filled wave guide with width a = 5 cm, the cutoff wavelength for TE10 mode is
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Explanation:
. The modes of propagation supported by a rectangular wave guide is:
a) TM, TEM, TE modes
b) TM, TE
c) TM, TEM
d) TE, TEM
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Answer: b
Explanation: A hollow rectangular waveguide can propagate TE and TM modes. Since only a single conductor is present, it does not support TEM mode of propagation.
TEₒₒ mode for a rectangular waveguide:
a) Exists
b) Exists but defined only under special cases
c) Does not exist
d) Cannot be determined
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Answer: c
Explanation: The field expressions for TEₒₒ mode disappears or becomes zero theoretically. Hence, TEₒₒ mode does not exist.
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