- The corrected length of tape. - The true length of the line.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:H.W:-
A line was measured with a (30 m) tape. This is standardized at (20 °C) under a
pull of (10 kg). The measured length of line was (1500 m). The temperature during
measurement was (30 °C) and the pull was (15 kg). Find: -
1- The corrected length of tape.
2- The true length of the line.
Given the following: -
1- Coefficient of expansion (a) = 3.5x10-6 per °C.
2- Modulus of elasticity (E) = 2.1x10“ kg/cm?.
3- Cross-sectional area of the tape (A) = 0.02 cm².
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