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An air traffic controller uses radar to determine the positions of incoming planes. The radar system emits radio waves of frequency 1030 MHz, which reflect from the airplane and return to the receiving dish at the airport. The system must be capable of resolving two aircraft that are separated by 1.00 mile at a distance of 20 miles from the airport. Assuming the receiving dish is circular, what minimum dish diameter is required?
Given a 100 MHz clock signal, derive a circuit using D Flip Flops to generate 50 MHz and 25 MHz clock signals. Draw a timing diagram for all three clock signals, assuming reasonable delays.
Derive the transfer function and Compute and plot C(kT) when the input is a step input with magnitude - Find the z-transform using the residue method.
It is often preferred to use a FET for the RF amplifier in an AM receiver. Can you explain why?
Provide an ideal mixing operation with a 10-kHz local oscillator having an amplitude of 2, and eliminate the undesired component by using a band-pass filter centered at 20kHz. The bandwidth should be sufficient to pass the shifted AM signal.
Silicon has an absorption co-efficient of 850 cm-1 at a wavelength of 805 nm. Light of intensity 1 W/m2 at this wavelength is directed at normal incidence onto a polished silicon wafer of thickness 0.5 mm.a. Assuming a top surface reflectance of 30..
The values of the impendence, Rs = 50 Ω, Rc = 40 Ω, L = 20 μH, C = 1.25 nF, and the voltage applied to the circuit shown in the Figure, vs(t) = V0cos(ωt+0o), V0 = 10 V, ω = 6M(rad/s). Find the current supplied by the source
What is the smallest number of samples that could be collected in order to know for sure whether or not the 1000Hz component is present? Assume you are using a Rectangular window.
A newly proposed thermoelectric generation material is the skutterudite family, such as FeAs3 or CoAs3. Assuming this new material has a Seebeck coefficient S = 35 V/K (microvolts per degree Kelvin), the electronic conductivity =1x104 (Ohm-cm)-1
Why the armature core in d.c machines is constructed with laminated steel sheets instead of solid steel steel?
What is the fractional change in total mass? (c) If one were to form 10 grams of water by this reaction, what would be the total change in mass?
An engineer decides to take 600 samples at sampling frequency 9000Hz. A Fast Fourier Transform (fft) program was applied to obtain the frequency spectrum of the signal. What is the frequency resolution,df, for the analysis
How to control each lamp by separately switch in parallel lighting circuit?
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