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6:25 ◄ Teams AA 14 * (2/2 Points) ● < The dominant mode in waveguide is the mode which has a) Highest frequency b) Highest wavelength c) Lowest phase constant d) Highest attenuation e) None 15 a O C forms.office.com e Wavefront is basically a locus of points acquiring similar (2/2 Points) 8 * Ć
6:24 ◄ Teams AA 3 (0/2 Points) * The expression for an electric field in free space is E = Eo ( + y +j22) e-i(wt-kx+ky), where x, y, z represent the spatial coordinates, t represents time, and w, k are contants. This electric field Represents a linearly polarized plane wave forms.office.com Represents an elliptically plane wave propagation along x-y plane Does not represent a plane wave (2/2 Points) : Represents a a circular polarized plane wave normal to the negative z-axis a) 75.4 m 574 m Ć X A 0.5 MHz antenna carried by an airplane flying over the ocean surface generates a wave that approaches the water surface in the form of a normally incident plane wave with an electric-field amplitude of 300 (V/m). Seawater is characterized by & = 27, μ = 1, and o= 5 (S/m). The plane is trying to communicate a message to a submarine submerged at a depth d below the water surface. If the submarine's receiver requires a minimum signal amplitude of 0.1 (uV/m), what the maximum depth d to which successful communication is still possible?