Why do weprefer to analysis unsymmtrical faults by symmtrical components methods?

Anonymous

∙ 12y ago

Updated: 11/22/2022

Because symmetrical components can represent an asymmetrical fault. That is, a phasor diagram with three different values of fault current and different displacement angles, can be represented by three symmetrical phasor diagrams: one with a positive phase sequence, the second with a negative phase sequence, and the third with each current in phase with each other. This is a very complicated subject and you are advised to seek a book on the subject, or research the topic online.

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∙ 12y ago

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Is the correct grammar my mother and me or my mother and I?

John and I is correct only when the sentence is using this phrase as its subject, i.e. it is used in the subjective case. Example: John and I prefer hot dogs. When the sentence they are in uses them as an object of a verb, only John and me is correct. An example of this is, "The boss fired John and me today." An object of a preposition like "to" or "for" or "from" also uses the "me" form, as in, "Do this as a favor for John and me." This may sound confusing and technical, so I'll make it very simple and foolproof. Whenever you are about to use either phrase, try saying your statement with only the "I" or "me". Leave out the words, "John and". You have just raised a much easier question: "Which is correct, I or me?" If you have a knowledge of the English language at the level of a 5 year old or more, you will immediately know the correct answer.For example can you handle these?1. Iprefer hot dogs. / Meprefer hot dogs. -- correct usage is "John and I".2. The boss fired Itoday. / The boss fired metoday. -- correct usage is "John and me".3. Do this as a favor for I./ Do this as a favor for me. -- correct usage is "John and me".Finally, if the meaning of what you are saying would turn to nonsense when applied to only one person (the I or me) you may have to try "we / us" instead of "I / me".The thing you have to remember now is that WE goes with I, and US goes with ME.Trying it in the sentences above:1. Weprefer hot dogs. / Usprefer hot dogs. -- correct usage is "John and Iprefer hot dogs".2. The boss fired wetoday. / The boss fired ustoday. -- correct usage is "The boss fired John and metoday".3. Do this as a favor for we./ Do this as a favor for us. -- correct usage is "Do this as a favor for John and me".Read this answer over several times if necessary. Once you catch on, making the correct choice will become very automatic.Practice by thinking up puzzlers to test your friends, and then tell them the reason for the correct answer. Here are a few to get you started:1. The award should have gone to John and ___! (Hint: to I/ to me)2. Your decision really made John and ___ very angry. (Hint: made we/ usangry)3. What if John and ____ treated you that badly? (Hint: What if I/ metreated you ...)

Why do weprefer to analysis unsymmtrical faults by symmtrical components methods?

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Is the correct grammar my mother and me or my mother and I?

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