3. A transmission line has a span of 150 m between level supports. The cross- sectional area of the conductor is 1.25 cm2 and weighs 100 kg per 100 m. The breaking stress is 4220 kg/cm2. Calculate the factor of safety if the sag of the line is 3.5 m. Assume a maximum wind pressure of 100 kg per sq. metre. [4] 4. A transmission line has a span of 150 m between the level supports. The conductor has a cross-sectional area of 2 cm2. The ultimate strength is 5000 kg/cm2. The specific gravity of the material is 8.9 gm/cm3. If the wind pressure is 1.5 kg/m length of conductor, calculate the sag at the centre of the conductor if factor of safety is 5. [3.28 m]
3. A transmission line has a span of 150 m between level supports. The cross- sectional area of the conductor is 1.25 cm2 and weighs 100 kg per 100 m. The breaking stress is 4220 kg/cm2. Calculate the factor of safety if the sag of the line is 3.5 m. Assume a maximum wind pressure of 100 kg per sq. metre. [4] 4. A transmission line has a span of 150 m between the level supports. The conductor has a cross-sectional area of 2 cm2. The ultimate strength is 5000 kg/cm2. The specific gravity of the material is 8.9 gm/cm3. If the wind pressure is 1.5 kg/m length of conductor, calculate the sag at the centre of the conductor if factor of safety is 5. [3.28 m]
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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![3. A transmission line has a span of 150 m between level supports. The cross-
sectional area of the conductor is 1.25 cm2 and weighs 100 kg per 100 m. The
breaking stress is 4220 kg/cm2. Calculate the factor of safety if the sag of the
line is 3.5 m. Assume a maximum wind pressure of 100 kg per sq. metre. [4]
4. A transmission line has a span of 150 m between the level supports. The
conductor has a cross-sectional area of 2 cm2. The ultimate strength is 5000
kg/cm2. The specific gravity of the material is 8.9 gm/cm3. If the wind
pressure is 1.5 kg/m length of conductor, calculate the sag at the centre of the
conductor if factor of safety is 5. [3.28 m]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe66f15e9-dfed-4f45-9df2-0ae9447c34b7%2Fc0e3370b-127a-4c58-bf1c-a017d76ff5df%2Ftloa7fm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3. A transmission line has a span of 150 m between level supports. The cross-
sectional area of the conductor is 1.25 cm2 and weighs 100 kg per 100 m. The
breaking stress is 4220 kg/cm2. Calculate the factor of safety if the sag of the
line is 3.5 m. Assume a maximum wind pressure of 100 kg per sq. metre. [4]
4. A transmission line has a span of 150 m between the level supports. The
conductor has a cross-sectional area of 2 cm2. The ultimate strength is 5000
kg/cm2. The specific gravity of the material is 8.9 gm/cm3. If the wind
pressure is 1.5 kg/m length of conductor, calculate the sag at the centre of the
conductor if factor of safety is 5. [3.28 m]
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