3 (a) Describe the visible range of the electromagnetic spectrum. dE dB -HOEO hold. Show...
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3 (a) Describe the visible range of the electromagnetic spectrum. dE dB పాల -HOEO hold. Show that meaning. where symbols have their usual %3| at dx 2 (c) . Comment on the quantity c in the equation veloçity of an electromagnetic wave in free space. (Permitivity of free space c 8.85×102 C'N'n; permeability of free space to = 4Tx10 Ns C-). Calculate the magnitude of 1/a (a) Discuss briefly wave guides. 12 (b) A circular waveguide has an internal diameter of 5em, calculate the cut-off frequencies for the Tollowing modes: TMo and TE02. (c) A 6 GHz signal is to be propagated in the dominant mode in a rectangular waveguide. If its group velocity is to be 90% of the free spsce velocity of light, what must be the breadth of the waveguide? What impedance wil! it offer to this signal, if it is correctly matched? 3 (a) Describe the visible range of the electromagnetic spectrum. dE dB పాల -HOEO hold. Show that meaning. where symbols have their usual %3| at dx 2 (c) . Comment on the quantity c in the equation veloçity of an electromagnetic wave in free space. (Permitivity of free space c 8.85×102 C'N'n; permeability of free space to = 4Tx10 Ns C-). Calculate the magnitude of 1/a (a) Discuss briefly wave guides. 12 (b) A circular waveguide has an internal diameter of 5em, calculate the cut-off frequencies for the Tollowing modes: TMo and TE02. (c) A 6 GHz signal is to be propagated in the dominant mode in a rectangular waveguide. If its group velocity is to be 90% of the free spsce velocity of light, what must be the breadth of the waveguide? What impedance wil! it offer to this signal, if it is correctly matched?
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