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level: Transformers

Questions and Answers List

level questions: Transformers

QuestionAnswer
What do Transformers do?-Change the size of the Potential Difference in an Alternating Current
How can Transformers do their Job?-They contain 2 Coils: Primary and Secondary Coil -Those cores are joined via an Iron Core -When an Alternating Potential Difference is given to the Primary Coil, it makes an Alternating Magnetic Field -Iron, too joins in and creates a Magnetic Field due to the Primary Coil. But since the Coil's alternate, the Irons will as well -And this Changing Magnetic Field gives the Secondary Coil an Induced Potential Difference
How effective are Transformers?-Almost 100% effective, so pretty much Power in Primary Coil = Power in Secondary Coil
What happens, in Transformers, if you put more Turns in the Secondary Coil?-The Potential Difference will be Greater -Current will Decrease
What are Step-Down Transformers?-Simply Transformers that step the Voltage down -They have more Turns on the Primary Coil, than the Secondary Coil
What are Step-Up Transformers?-Simply Transformers that step the Voltage Up -They have More turns on the Secondary Coil, than the Primary Coil
What is the Transformer Equation tell you?-The Number of Turns in the Coil can affect the Size of the Potential Difference in it -The Ratio between the Potential Difference in the Primary and Secondary Coil is the same as the Number of Turns in the Coil Pd across Primary Coil [V]...=..Number of Turns in Primary Coil ----------------------------------=..-------------------------------------- Pd across Secondary Coil [V].=. Number of Turns in Secondary Coil
What factors determine the Transformers effectiveness?-Core Quality/Size -Wire Size