Example: page No. (7) The resistance of the wire in the type used in telephone lines is (35 Ohms per kilometer), and the mass of the wire is (5 kilograms per kilometer). The resistivity of the wire material is (1.95 x 10-8Q m). What is the cross-sectional area of the wire? What is the resistance of a pulley containing (8 Km) of other wire made of the same material, but its mass is (20 kilograms per kilometer)?

Example: page No. (7) The resistance of the wire in the type used in telephone lines is (35 Ohms per kilometer), and the mass of the wire is (5 kilograms per kilometer). The resistivity of the wire material is (1.95 x 10-8Q m). What is the cross-sectional area of the wire? What is the resistance of a pulley containing (8 Km) of other wire made of the same material, but its mass is (20 kilograms per kilometer)?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.4P: One thousand circular mils or 1 kcmil is sometimes designated by the abbreviation MCM75C. Data for...

See similar textbooks

Similar questions

Using the above example, determine the wire size needed for the 400-ampere service in accordance with the National electrical Code. Assume that the conductors have type THWH insulation. (Note: As a general rule, for each 100 feet of conductor length the wire size is increased one standard size because of voltage drop.)
Determine the ohms-per-mil-foot of an aluminum conductor located in an area with a temperature of 104F (40C). Use the NEC to determine the ampacity of the following conductors.
An aluminum transmission line is to be replaced by copper having the same total resistance. If thecross-sectional area of the aluminum wire is 820 MCM, what would be the cross-sectional area of thecopper wire ? Given : Resistivity of aluminum = 17 Ω-CM per ft,Resistivity of copper = 10.37 Ω-CM per ft ( ANS ≈ 500 ??? )
A copper wire at 20 degrees C, and 164 cmil, has a K value of 10.4 ohms per mi-foot. If the distance to the load is 600 feet (183 m) calculate the resistance of the loop.
A coaxial cable of consists of two concentric cylindrical conductors. The region between the conductors is completely filled with polyethylene plastic. The radius of the inner conductor is 0.50 cm, the radius of the outer conductor is 1.75 cm, and the length of the cable is 15 cm. The resistivity of the plastic is 1013 Ω • m. Calculate the resistance of the plastic if the electric field is applied across the ends of the conductor.
An electric wire having a mass of 0.5 kg/m along the horizontal is suspended between supports of the same elevation which is 50m apart. If the maximum tension in the wire is 800N, find a. the minimum tension b. the sag c. the length cable
A telephone line (cable) stretches between two points which are 150 ft apart and at the same elevation. The line sags 5 ft and the cable has a weight of 0.3 lb/ft. Determine the length of the cable and the maximum tension in the cable.
Compute the resistance of a conductor whose resistivity is 20.54 ohm-CM per foot with circularcross-sectional area of 38 mm2 and length of 5,000 meters. If the conductor is drawn until its resistance becomes 10 ohms, what will be its new length?
The wires of our appliances are insulated with a material mixed with rubber, which has a very high resistivity. If a certain wire has a length of 2.5 m and the outer diameter is 5mm and its inner diameter is 0.5mm, what is its resistance? Note that the inner diameter is present to leave a hallow place where conducting wire ( usually copper) is present. Follow the format: Given: Required: Equation: Solution: Answer:
If a certain conductor has an area of 336400 CM, what is the radius of the conductor in cm? Write your answer in 4 decimal places.
A cylindrical conducting wire which is 4658.98cm long, 83.02mm thick and resistivity of 8.92 ohm per meter has how much resistance
A long copper wire carries a current of 15A which is evenly distributed in each cross-section of the wire. If the diameter of the wire is 3 mm, and the resistance per unit length is 4 ohm/km. Calculate the density of the magnetic and electric fields on the surface of the wire.