y(t)= x(t)cos(2rf.t), Is this a LTI system?
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- The step response of an LTI system is?If the Far end cross talk rating of a cable is 24.8 dB at a given frequency and the attenuation of the cable is 3.3 dB, find the Equal Level Far End Crosstalk in dBQ2 What is the velocity of signal on a loss-less transmission line (a)1/√LC (b) √LC (c)√L/C (d) √C/L
- For a lossless channel show that: H(X/Y) = 0In case of the SSB communication A)The carrier alone is transmitted b)The carrier and one sideband are transmitted C)The carrier and the two sidebands are transmitted D) none of the other answers are trueAs a technician, you are responsible for the construction of a 10km optical communication link between Pelonomi Hospital and National Hospital in Bloemfontein. The following link specifications are available:Transmitter output power: 15mWCommercially available optical cable length: 2kmOptical cable attenuation: 1.2dB/kmSplice attenuation: 0.1dB/kmLight transmitter-to-cable loss: 1.5dBCable-to-photo detector loss: 1.5dBSafety margin: 7dB Determine the minimum receiver sensitivity in microwatts needed to reliably detect a transmitted signal.
- For multimode step-index fiber with core index of 1.68 and radius of 35 um. The indexdifference is 3.75%. For a wavelength of 1150 nm, the optical power propagating incladding is what percentage of total power?Determine which of the following statements is true or false, and correct the wrong? Medium which sends information from source to receiver is called a transmitter.Which of the following is true about the technology used to talk on a cell phone? A. Cell phones use one signal to send to a receiver station which then uses the same signal to relay the communication B. If you use a cell phone in one location but move to another distant location while you are speaking, the frequency will change C. The electrical signal from a cell phone is used to create radio waves that are transmitted to and from transceivers on microwave towers
- 10/Explain in your own words and your own understanding (avoid plagiarism) why there's Capacitance in between Transmission Lines and in between Distribution Lines.find IE, AV, IcsatWhich statement about satellites is correct?(multiple choice questions)A.Passive satellites usually receive shorter wavelengths than resource satellitesb.Resource satellites are active satellitesc.Resource satellites are closer to the earth than communication satellites, in order to obtain high-resolution imagesD.Traditional communication satellites are geostationary satellites