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Working wires
DVD
Working wires
Copies
2 Total copies, 2 Copies are in, 0 Copies are out.
Explains how DC is generated, the characteristics of DC voltage and amperage, how AC is generated, the characteristics of AC voltage and amperage, the role of transformers in heating and cooling equipment, how transformers use magnetism and electromagnetic induction to change voltages, the function and operation of relays.
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Title
Working wires
Call No
TH 7466 G3 W67 1987 GUIDE
Authors
Lennox Industries Inc
Lennox Education
Subjects
Dwellings--Heating and ventilation.
Buildings--Heating and ventilation.
Furnaces--Maintenance and repair.
Gas--Heating and cooking.
Electricity.
Language
English
Published
Dallas, Tex. : Lennox Industries Inc., 1987.
Publication Desc
1 DVD (18 min. 45 sec.) : sd., col. ; 12 cm. + 1 guide (12 p. : ill. ; 28 cm.).
Dimensions
12 cm. +
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