Question

The modes in a rectangular waveguide are denoted by TEmn / TMmn, where m and n are the Eigen values along the larger and smaller dimensions of the waveguide respectively. Which one of the following statements is true? (a) The TM10 mode does not exist (b) The TE10 mode does not exist (c) The TE10 and TM10 both exist and have same cut off frequencies (d) When m and n are increases, the cut off frequency decreases This question was posed to me during an online interview. This interesting question is from Advanced and Tricky Questions in chapter Advanced and Tricky Questions of Electromagnetic Theory Select the correct answer from above options Electromagnetic Theory questions and answers, Electromagnetic Theory questions pdf, Electromagnetic Theory question bank, Electromagnetic Theory questions and answers pdf, mcq on Electromagnetic Theory pdf,electromagnetic theory book pdf,electromagnetic theory pdf notes,electromagnetic theory lecture notes,electromagnetic theory of light,maxwell electromagnetic theory,electromagnetic theory proposed by,electromagnetic theory engineering physics,electromagnetic theory nptel

Answer 1

Right choice is (a) The TM10 mode does not exist Easiest explanation: For TM mode, TM00, TM10, TM01 does not exist. For TE mode, TE00 does not exist but TE10 and TE01 exists.