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Q. For a pyramidal-horn antenna, the maximum directive gain is given by
occurring when the aperture dimensions are A ∼ = √3λLandB = 0.81A. The principal-plane beam- widths for the optimum horn with maximum gain are given by θB ∼ = 54λ/B in degrees in the yz- plane, and by φB ∼ = 78λ/A in degrees in the xz- plane. For a pyramidal horn, with A = 6λ and B = 4.86λ, at 6 GHz, ?nd GD, θB, and φB. Comment on whether this horn is optimum.
(a) Describe the four functions of the physical layer in the Internet Model. (b) (i) With the help of a diagram describe the main stages involved in the digitization of a
A three-phase, 50-hp, 440-V, 60-Hz, four-pole, wound-rotor inductionmotor operates at a slip of 0.03 at full load,with its slip rings short-circuited. The motor is capable of devel
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Q. Explain about Communication Systems? Even though most modern communication systems have only been invented and developed during the eighteenth and nineteenth centuries, it i
With neat diagrams explain the configuration of a step-by-step switching system
You are required to implement below shift system in MATLAB, t0 is the amount of shift towards left or right. y(t)= x(t-t0) Implement MATLAB code, where shift should be taken as
Describe 74LS139 memory decoder. The 74LS139 is a dual 2-to-4 line decoder. This contains two separate 2-to-4 line decoders - all with its address, output and enable connection
Charge density I n a semiconductor
Let ω = 2π × 60 rad/s corresponding to a frequency of 60 Hz. (a) Consider v(t) = 100 √2 cos(ωt + 30°) V and i(t) = 10 √2 sin(ωt + 30°) A. Find the corresponding phasors ¯V and ¯
What is the function of the signal in 8086? BHE signal means Bus High Enable signal. The BHE signal is made low when there is some read or write operation is carried out. i.e.
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