Communications MCQ Set 1 1. Which is the dominant mode for a rectangular waveguide? a) TE 01 b) TM 01 c) TE 10 d) TM 10 AnswerAnswer: c [Reason:] Rectangular waveguides are earliest form of transmission lines. It supports TM and TE mode, but it not supports TEM mode. A rectangular waveguide can’t propagate below…