ease draw the same sine wave that would be displayed on different time per division and volts per division settings on the oscilloscope.  the time per division is displayed at the center bottom of the each screen and the volts per division is displayed on the bottom left of the screen. The wave you will be drawing will be a sine wave with frequency of 1000 Hz and an amplitude of 3 V. The wave you will be drawing will have the equation: 3sin(2π⋅1000t)

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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.