1. Determine the Fourier transform of a DT signal using Integration form 2. Determine the Fourier transform of a DT signal using Fourier transform pairs and its properties 3. Plot the magnitude and phase spectra of a DTT signal I. CALCULATION PART y[n] = 0.5"[u[n] – u[n – 5]] 1. Using DTFT Transform pairs and transform properties, find Y (Q) the DTFT for the DT signal y[n] as function of 2. 2. Compute the magnitude MQ) and the phase (N) over the interval -n NS -1/4 Tt/2 Зп /4 TT Ω — Зп /4 -T/2 Tt/4 Y(2) M(Q)

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Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.