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For low attenuation, the best transmission medium is
- a)flexible waveguide
- b)ridged waveguide
- c)rectangular waveguide
- d)coaxial line
Correct answer is option 'C'. Can you explain this answer?
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Transmission Medium for Low Attenuation
Low attenuation in a transmission medium is important for maintaining signal strength and quality over long distances. The best transmission medium for low attenuation is a rectangular waveguide.
Rectangular Waveguide
- A rectangular waveguide is an enclosed metal tube with a rectangular cross-section that is designed to guide electromagnetic waves at certain frequencies with low attenuation.
- The design of the waveguide allows for minimal loss of signal strength due to the lack of radiation and leakage of the electromagnetic waves.
- The dimensions of the waveguide are carefully chosen to match the wavelength of the transmitted signal, ensuring efficient transmission with low attenuation.
- Rectangular waveguides are commonly used in high-frequency applications where low attenuation is crucial, such as in radar systems, satellite communication, and microwave transmission.
Comparison with Other Transmission Media
- Flexible waveguides and ridged waveguides are also used for guiding electromagnetic waves, but they may not offer as low attenuation as a rectangular waveguide.
- Coaxial lines, while widely used for communication purposes, may have higher attenuation compared to rectangular waveguides, especially at higher frequencies.
Therefore, when low attenuation is a priority in a transmission system, a rectangular waveguide is the best choice due to its efficient design and minimal signal loss.
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For low attenuation, the best transmission medium isa)flexible waveguideb)ridged waveguidec)rectangular waveguided)coaxial lineCorrect answer is option 'C'. Can you explain this answer?
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