Vector group of Transformer: a.)The three stage transformer windings can be joined a few ways. In light of the windings' association, the vector gathering of the transformer is resolved. b.)The transformer vector gathering is shown on the Name Plate of transformer by the producer. c.)The vector gathering shows the stage contrast between the essential and auxiliary sides, acquainted due with that specific setup of transformer windings association. d.)The Determination of vector gathering of transformers is imperative before uniting two or more transformers in parallel. On the off chance that two transformers of diverse vector gatherings are associated in parallel then stage distinction exist between the optional of the transformers and huge coursing current streams between the two transformers which is extremely impeding.
Currently unknown. a transformer that appears to look alot like "Unicron" just on a much smaller scale is briefly shown in a secret Transformers 3 preview feature in the Revenge of the Fallen Blu-ray disc, although no comment has been made if he will be in upcomming Transformers 3 dark of moon. there is a slight chance he will be in the movie, but most likely not.
Currently unknown. a transformer that appears to look alot like "Unicron" just on a much smaller scale is briefly shown in a secret Transformers 3 preview feature in the Revenge of the Fallen Blu-ray disc, although no comment has been made if he will be in upcomming Transformers 3 dark of moon. there is a slight chance he will be in the movie, but most likely not.
Transmission transformers are rated in mva. Distribution transformers are rated in kva. Power transformers are measured in va. There are, of course, exceptions, but this is the normal nomenclature.Answer (for UK terminology)In the electricity supply industry, the name 'power transformer' is used to describe those transformers used in the transmission system (400/275/132-kV levels), while 'distribution transformers' are those used in the distribution system (33 & 11-kV and 400-230-V levels). Power transformers and primary-distribution transformers are rated in megavolt amperes (MV.A), while secondary-distribution transformers are rated in kilovolt amperes(kV.A).Note that 'mva', 'kva', and 'va' are incorrect symbols for 'megavolt ampere', 'kilovolt ampere', and 'volt ampere'. The correct symbols are shown in the above paragraph (except that the period, or full stop, should be placed above the line).However, I suspect your question is really asking why are transformers rated in (mega) volt amperes rather than in (mega) watts? The answer is simply that the load that a transformer can supply is determined by the product of the transformer's rated secondary voltage and rated secondary current -the product of which (for alternating current) is the volt ampere, not the watt.
It is required to connect a second transformer in parallel with the first transformer if the load exceeds the rating of the transformer shown in Figure 1.46. The primary windings are connected to the supply bus bars while the secondary windings are connected to the load bus bars. During paralleling of the transformer, similar polarities of the transformers should be connected to the same bus bars shown in Figure 1.46. Otherwise, the two emfs induced in the secondary windings with incorrect polarities will produce the equivalent of a dead short circuit shown in Figure 1.47.The following conditions are important for parallel opera-tion of transformers:The voltage ratings of both the primary and the secondary of the transformers should be identical. Small differences are permissible if the resultant circulating currents can be tolerated.The connections of the transformers should be proper with respect to their polarities.The percentage impedances should be equal in magnitude and the X/R ratio must be the same to avoid circulating current and operation at different power factors.The equivalent impedances must be inversely proportional to the respective kVA ratings.The above conditions must be satisfied by paralleling transformers of identical ratings of the same make/model. With different kVA ratings of even the same make/model, the effects in steps 1, 2 and 3 may appear in undesirable amounts. Step 2 must be carried out satisfactorily even if steps 1, 3 and 4 are slightly modified.Figure 1.46 Parallel Operation of TransformersFigure 1.47 Parallel Operation of Transformers with Incorrect Polaritiesby keshav basyalpokharauniversitypokhara nepal
When you see "Delta" it is a kind of winding used in transformers or motors Think of a triangle. Each leg of the triangle is a winding. Power is connected to each of the three points of the triangle.For more information see the answers to the Related Questions shown below.
Shinichi is in The Vampire Diaries: The Return trilogy but hasn't shown up in the show.
Yes, several people are shown smoking pipes throughout the trilogy.
They are made in a large variety of types. Some of these are shown in the linked article.
They indicate the laminated metal core upon which the windings are wound.
Assuming the question related to the toy line; "Transformers" first came out in 1984 after Hasbro bought out the Diaclone, Diakron, and micro toy lines. Hasbro created a cartoon as an ad campaign and named the toys something better than DK-1.
Vampires have never been shown to exist.