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Q. A paraboloidal antenna has an aperture ef?ciency of 0.6 and a diameter D = 100λ at 6 GHz. Illumination by the feed is such that the beamwidths of the principal-plane secondary patterns are equal. Determine the antenna's power gain and beamwidth. (Note that the radiation pattern of the feed is called the primary pattern, whereas that of the overall antenna is the secondary pattern.)
Q. Explain about Differentiator? Shown in Figure is a differentiator which is obtained by replacing R1 in the inverting amplifier of Figure by a capacitor C. Assuming ideal op-
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show a schematic diagram of michelson interferometer
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explain recombination in semiconducters
Explain RS422A standard. RS422A: 1. Date Rate: 10 Mbits per second 2. Driving capability up to 4000ft and 10 receivers 3. This is Differential standard that is- a
A 3-phase transmission line is 200km long. The line has a per phase series impedance of 0.25+j0.45 Ω/km and shunt admittance of j7.2 μS/km. The line delivers 250MVA, at 0.6 lagging
A 20µF capacitor is connected in series with a 50 kΩ resistor and the circuit is connected to a 20 V, d.c. supply. Verify: a) The initial value of the current flowing, b) T
A network function is given by (a) For x(t) = δ(t), obtain y(t). (b) For x(t) = u(t), obtain y(t). (c) For x(t) = e -4t , obtain y(t). (d) Express the differenti
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