1. In a circular waveguide TE21 mode has lowest cutoff frequency



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MCQ->In a circular waveguide TE21 mode has lowest cutoff frequency....
MCQ->Match the following: List I List II A.Ratio of maximum energy stored to energy dissipated per cycle1.Propagation constantB.TEM mode is loss less medium2.Cutoff frequency is zeroC.Ratio of frequency in radian to phase velocity of EM wave3.Quality factor of cavityD.TEM is the mode of lowest cutoff frequency4.Cylindrical waveguide

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MCQ->Consider the following statements Usable bandwidth of ridge wave guide is more than that of rectangular waveguide.For a given value of TM10 cutoff frequency the cross section of ridge wave guide is lesser that that of rect angular waveguide.Ridge wave guide has higher conductor losser than a rectangular waveguide.Ridge guide has higher conductor losser than a rectangular waveguide. Which of the above statements are correct?....
MCQ->Assertion (A): In TE10 mode the cutoff frequency of rectangular waveguide is where a is the broad dimension and c is velocity of light.Reason (R): TE10 mode is the dominant mode in rectangular waveguide.

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MCQ->Assertion (A): In circular waveguide the attenuation of TE01 mode decreases as the operating frequency increases.Reason (R): The wall currents in a circular waveguide in TEQ1 mode are completely circumferential.

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