Unit 11 · Motor effect

Transformer

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Words from This Topic

Transformer: a device that increases or decreases the voltage of alternating current.

Voltage rating: the input and output voltage printed on a device.

Transmission: carrying electricity over long distances on high-voltage lines.

Distribution: sharing electricity out to the people who use it.

Substation: a load transmission centre where the voltage is changed as required.

Kilovolt (kV): a unit equal to 1000 volts.

Core lamination: building the core from thin insulated iron sheets.

Mutual induction: inducing an emf in a coil by changing the current in the adjacent coil.

Primary coil: the input coil, into which a.c. is fed.

Secondary coil: the output coil, in which a.c. is induced.