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Q. An antenna has an aperture area of 10 m2 ,an aperture ef?ciency of 0.6, and negligible losses. If it is used at 5 GHz, determine:
(a) Its power gain.
(b) The maximum power density that the antenna can generate at a distance of 20 km with an input power of 2 kW.
What is basic requirement of semiconductor laser? Draw its label diagram and explain its working with necessary theory. Write down the applications of semiconductor laser.
The voltage across a 1 - μF capacitor is given. Which is the sinusoidal expression for the current? a) 30 sin200t b) 70cos (800t - 20°) At what frequency will the re
what is the formula for sag?
Execution Unit receives program instruction codes and data from BIU, implements these instructions and store the result in general registers.
The resistance of a wire is 60 ? at 25 o C and 65? at 75 o C. Find the resistance of wire at 0 o C and value of temperature co-efficient at 0 o C. Ans: Given R 25 = 60 ? a
Q. Illustrate Sources and Loads? A source-load combination is represented in Figure. A node is a point at which two or more components or devices are connected together. A part
Digital Transmission on Fading Multipath Channels We have discussed thus far digital modulation and demodulation methods for the transmission of information over two types of c
filt is a circuit that cantains onely passive components
P N P
Q. The energy stored in a 2-µH inductor is given by wL(t) = 9e-2t µJ for t ≥ 0. Find the inductor current and voltage at t = 1 s.
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