1. solve equation of the sinusoidal signal v(t) from the information, where v(t) = Vp sin ωt.   Vp-p = 6 div                  Oscilloscope setting: horizontal = 0.5 ms/div 1 cycle = 8 div                                              vertical amplitude = 0.5 volt/div     2. 1 cycle of 2 sinusoidal signals displayed with 10 kHz on the oscilloscope screen. If the two signals have a difference time with 20µs, what the value of phase shift between two signals/waveforms displayed on the scope screen?

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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.