An element in an electric heating unit is applied to a 232v power supply. The current flow through the element is 19 amperes. What is the resistance of the elements?

Q: 1. Explain the conventional nature of electricity.

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A: Given temperature is –

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Q: 2. Explain the difference of power and energy.

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A: First we will find out voltage across load resistance.then We will find out power across load .

Q: №g + SIO 5 Va - Then calc. power, P=VI

A: Here we have to find the voltage Vg and power P.

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Q: 2/ Explain that the idea of a dynamometer can be used for different measurements.

A: The explanation is as follows.

Q: 6. A purely resistive electric furnace is connected in parallel with a motor with lagging power…

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A: The solution can be achieved as follows.

Q: what is value of current (I).

A: Given circuit is -

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A:

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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.