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 Electromagnetic Waves 20 Flashcards |
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Which mode has a non-zero electric field component transverse to the direction of propagation? A) TE mode B) TM mode C) TEM mode D) Mixed mode |
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A) TE mode |
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True or False: The TEM mode can exist in a rectangular waveguide. |
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False. TEM mode cannot exist in a hollow conductor waveguide without an inner conductor. |
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Riddle: I have no component along the direction of propagation, yet I'm essential for electric field guidance. What am I? |
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Transverse Electric mode (TE mode) |
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The phase velocity in a waveguide can become infinite as the frequency approaches ______. |
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Cutoff frequency |
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For a TE10 mode in a parallel plate waveguide, what is the condition for the electric field at the plates? The electric field must be ______. |
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Zero |
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What is the cutoff frequency for the TE10 mode in a rectangular waveguide of dimensions a and b? |
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The cutoff frequency is given by c/2√(m²/a² + n²/b²). |
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In the TM mode, which component of the electric field is non-zero? |
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Ez |
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True or False: The group velocity is always greater than the phase velocity in a dispersive medium. |
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False. The relationship can vary depending on the medium's characteristics. |
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Fill in the blank: The Poynting vector represents the ______ of electromagnetic energy. |
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Power flow |
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Which of the following is characteristic of the TEM mode? A) Ez = 0 B) Hz = 0 C) Both Ez and Hz = 0 D) None of the above |
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C) Both Ez and Hz = 0 |
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