Electric company high voltage Transformers used in the utility grid are typically insulated by being immersed in a tank of oil, and cooled by natural convection (circulation) of the oil. A "dry type" transformer is not immersed in oil, and is cooled by air convection or by fans.
Both are same. This is an instrument transformer used for metering & protections.
a step down transformer is used to lower the voltage from the powerlines into your home. a common slang term for this type of transformer is a pole pig.
we cannot use transformer because transformer cannot change frequency . . .
An audio frequency transformer is a transformer designed to operate in the range of frequencies audible to the average human. This range is generally accepted to be from 20 Hz to 20,000 Hz. The usual purpose of an audio transformer is to match impedances between circuit sections. For example: between a microphone and the input of an amplifier, (input transformer), or between the output of an amplifier and the loud speaker. (output transformer).
Sounds more like a "homework" or "test" question, rather than a real-world question, and vague, at that! Could you re-phrase your question in a better, more-precise context, or check it for typos? Right now, your question seems to ask "What's the advantage of using a transformer, instead of using a transformer-coupled circuit?"...which makes no sense, since a "transformer-coupled circuit" USES a transformer.
a hole transformer
Transformer has windings
yes we can place auto transformer in place of original transformer
The function of fans in a transformer is to regulate the transformer's temperature.
A transformer that increases voltage is a step-up transformer.
Center tap transformer is the such kind of transformer that is made to a point half way along a winding of a transformer.
An isolation transformer is usually a ferromagnetic transformer. The question needs to be framed more usefully.
because the copper is saved in the auto transformer that is the ratio of weights of copper in auto transformer to normal transformer is (1-(1/a)) where a is transformer ratio
The difference between current transformer and potential transformer is that the secondary of a current transformer can not be open circuited while under service whereas that of the potential transformer an be open circuited without any damage to the transformer.
A transformer does many things.
Transformer Radio Meters
density of transformer is 1.98