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zakruti.com » Knowledge, science, education » The Engineering Mindset
Transformers: How They Increase Voltage

Transformers: How They Increase Voltage

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Rating: 4.0; Vote: 1
on transformer basics electrical engineering OF: Actually this is not accurate. Power Factor is not Efficiency as inductive and capacities equipment need to circulate power back and forth between the equipment and the grid in order for them to operate and that is indicated by Power Factor but this power is not lost per say. You pay for the kw, not the kva, because your consumption is only for the kw. It is of course not useful have a high difference between your kva and kw (i. e. consuming more reactive power kvar) because it means that there will be more loses over the transmission lines. Therefore, utility company ensures to keep the power factor as high as possible, but this is not an issue in facilities where generation and loads and just near each other.
Date: 2023-11-17

Comments and reviews: 8


Great video! I want to clarify one thing, though. Reactive might not be useful but it's NECESSARY. You can't output it as work, but it's the energy needed for the transformer itself to work (magnetize. Therefore, is NOT energy dissipated as heat. And also that's why it's said that's an energy that comes from and goes to the transformer. Energy dissipated as heat comes from the resistance in coils, a that is ACTUAL WORK lost in heat.
Hope it helps.
I still think your videos are great, I try to watch them all.
Thanks!

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I don't think it's accurate to call reactive power wasted power. Reactive loads return power to the source, so less real power is used, but it's not lost.
Power factor is not power efficiency.
Transformers _are_ less efficient when not fully loaded, but this is because of the losses due to heat generated in the core and windings. The losses are present regardless of the load, but are a lower percentage of output power at higher loads.

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I like how you used beer to measure my true useful power. That was a nice touch; ) Because it's true, beer is used to measure my true useful power. But it's more of an inverse relationship: D
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Thank you for the video. I just wanna share one (to me at least) interesting thing. In my language, the word used for reactive power, the word kVAr, literally translates as mailfunction: )
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This is not how transformers increase voltage. How involves magnetic fields, fluxes and stuff, so please fix your title.
Or make and actual video about it, would be great: D

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I think BEER ANALOGY IS NOT CORRECT. We can just say that a glass with water on it is 80% while the air is 20%. Beer foam still contains useful beer in it.
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One law that physics states at the beginning, energy conservation is present in 99. 99999999999999999% of the time. So we think.
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please make some sf6 circuit breker related vedio and also why we use horn gap arrester in transformer
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