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A coil has a resistance of 18 N when its mean temperature is 20°C and of 20 Q when its mean temperature is 50°C. Find its mean temperature rise when its resistance is 21 N and the surrounding temperature is 15° C.(pts)

A coil has a resistance of 18 N when its mean temperature is 20°C and of 20 Q when its mean temperature is 50°C. Find its mean temperature rise when its resistance is 21 N and the surrounding temperature is 15° C.(pts)

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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. A coil has a resistance of 18 Q when its mean temperature is 20°C and of 20 Q when its mean temperature is 50°C. Find its mean temperature rise when its resistance is 21 N and the surrounding temperature is 15° C.(pts) B. An armature has a resistance of 0.2 Q at 150°C and the armature Cu loss is of 55°C If a, for Cu is
Transcribed Image Text:. A coil has a resistance of 18 Q when its mean temperature is 20°C and of 20 Q when its mean temperature is 50°C. Find its mean temperature rise when its resistance is 21 N and the surrounding temperature is 15° C.(pts) B. An armature has a resistance of 0.2 Q at 150°C and the armature Cu loss is of 55°C If a, for Cu is
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