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EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN:9781337516549
Author:Simmons
Publisher:Simmons
Chapter25: Television, Telephone, And Low-voltage Signal Systems
Section25.2: Telephone System
Problem 10R: What are the colors contained in a four-conductor telephone cable assembly, and what are they used...
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Q)Write a report about relay
and the difference between
relay and contactor?
Transcribed Image Text:Q)Write a report about relay and the difference between relay and contactor?
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