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1. Why must a modem be used to transmit binary data through a PSTN?
(1) Use sketches and additional text to describe the following modulation methods.
(a) Amplitude shift keying
(b) Frequency shift keying
(2) Discuss the factors that in?uence the choice of carrier frequency and the bandwidth used by the demodulator section of a modem.
Sing Flag If D7 ( bit left most bit) of accumulator (which some exceptions) is 1 as a result of any arithmetical or logical operations sign flag is set ( bit corresp
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Q. A three-phase transformer bank consisting of three 10-kVA, 2300:230-V, 60-Hz, single-phase transformers connected in Y- is used to step down the voltage. The loads are connecte
Q. Explain a Tube Well? Method of restoring or increasing the capacity of tube well is known as developing a Tube Wells. This is done to eliminate bridging of fine particles on
Q. Sketch the asymptotic Bode plots for the following loop-gain functions, and find the approximate values of gain and phase margins in each case.
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