Copper and aluminum are being considered for a high-voltage transmission line that must carry a current...
Copper and aluminum are being considered for a high-voltage transmission line that must carry a current of 49.2 A. The resistance per unit length is to be 0.172 Ω/km. The densities of copper and aluminum are 8960 and 2600 kg/m3, respectively. Compute (a) the magnitude J of the current density and (b) the mass per unit length λ for a copper cable and (c) J and (d) λ for an aluminum cable.
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Copper and aluminum are being considered for a high-voltage
transmission line that must carry a current...
Copper and aluminum are being considered for a high-voltage transmission line that must carry a current...
Copper and aluminum are being considered for a high-voltage transmission line that must carry a current of 59.0 A. The resistance per unit length is to be 0.181 Ω/km. The densities of copper and aluminum are 8960 and 2600 kg/m3, respectively. Compute (a) the magnitude J of the current density and (b) the mass per unit length λ for a copper cable and (c) J and (d) λ for an aluminum cable.
Copper and aluminum are being considered for a high-voltagetransmission line that must carry a current of...
Copper and aluminum are being considered for a high-voltagetransmission line that must carry a current of 50.0 A. The resistance per unit length is to be0.200 /km. The densities of copper and aluminum are 8960 and 2700kg/m3, respectively. Compute: (a) the magnitude J of the averagecurrent density for a copper cable 1 A/m2 (b) the mass per unit length λ for a coppercable. 2 kg/m (c) the magnitude J of the average current density for analuminum cable 3 A/m2 (d)...
A 160-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,150 A....
A 160-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,150 A. If the conductor is copper with a free charge density of 8.5 1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156 107 for the number of seconds in a year.) yr?
An aluminum power transmission line has a resistance of 0.0580 Ω / km . a) What...
An aluminum power transmission line has a resistance of 0.0580 Ω / km . a) What is its mass per kilometer? (b) What is the mass per kilometer of a copper line having the same resistance? c)A lower resistance would shorten the heating time. Discuss the practical limits to speeding the heating by lowering the resistance.
1. A copper wire is carrying 5.0 A of current. Given that the electric field between...
1. A copper wire is carrying 5.0 A of current. Given that the electric field between the ends of the cable has a value of 0.75 V/m. Answer the following questions: (50 points) . Find the current density in the wire. .Find the drift speed of the mobile charges. For this you will need the density of copper, D 8960 0.063 kg/mol. Assume each atom of iron contributes kg/m3 and the molar mass of copper, m with one electron. ....
The three phase 400kV transmission line is lj = 160km long. The end-of-line voltage is 410...
The three phase 400kV transmission line is lj = 160km long. The
end-of-line voltage is 410 kV and the load is 400 MVA with a power
factor of 0.8 ind. The cable parameters are: r = 0.026 Ω / km, x =
0.33Ω / km, g = 0.023µS / km and b = 3.57µS / km. Calculate the
upstream phase voltage and phase current of the cable.
Enter the upstream phase voltage U1v of the line in kV
Enter the...
4. A high-voltage transmission line with a resistance of 0.31.2/km carries a current of 1000 A....
4. A high-voltage transmission line with a resistance of 0.31.2/km carries a current of 1000 A. The line is at a potential of 700kV at the power station and carries the current to a city located 160 km from the station. What is the power loss due to resistance in the line? b) What fraction of the transmitted power does this loss represent?
Part 1 Before we can consider the effects it might have, we must consider the high...
Part 1 Before we can consider the effects it might have, we must consider the high tension power line itself. Such wires are frequently constructed by twisting aluminum or copper wires together into a large flexible bundle. Consider such a copper cable with a diameter of 4 cm. If this cable is 10 km long, what is its resistance? Remember: Resistance = Resistivity * Length / Area Resistivity of copper is 0.0000000168 Ω-m Cross sectional Area of...
A 3-ph, 50 Hz overhead transmission line 100 km long delivers 20 MW at 0.9 p.f...
A 3-ph, 50 Hz overhead transmission line 100 km long delivers 20 MW at 0.9 p.f lagging and at 110 kV. The resistance and reactance per phase per km are (0.2) Ω and (j0.4) Ω respectively, while capacitive admittance per phase per km is (j2.5 * 10-6) siemen. Using nominal T circuit, Find: 1- Constants A, B, C, and D. 2- Sending end voltage. 3- Sending end current 4- Sending end power factor 5- Voltage regulation of this T.L. 6-...
A three-phase transmission line is 370 km long. The series impedance of the line is 0.524angle79.4 Ω/km and the susceptance is j3.17x10^-6 S/km. The voltage at the sending end is 400 kV. (i) Find the sending end current and the receiving end voltage when
A three-phase transmission line is 370 km long. The series impedance of the line is0.524angle79.4 Ω/km and the susceptance is j3.17x10^-6 S/km. The voltage at thesending end is 400 kV. (i) Find the sending end current and the receiving end voltagewhen there is no load on the line. (ii) Determine the maximum permissible line lengthif the receiving end no-load voltage is not to exceed 430 kV.
1. A copper wire is carrying 5.0 A of current. Given that the electric field between the ends of the cable has a value of 0.75 V/m. Answer the following questions: (50 points) . Find the current density in the wire. .Find the drift speed of the mobile charges. For this you will need the density of copper, D 8960 0.063 kg/mol. Assume each atom of iron contributes kg/m3 and the molar mass of copper, m with one electron. ....
The three phase 400kV transmission line is lj = 160km long. The
end-of-line voltage is 410 kV and the load is 400 MVA with a power
factor of 0.8 ind. The cable parameters are: r = 0.026 Ω / km, x =
0.33Ω / km, g = 0.023µS / km and b = 3.57µS / km. Calculate the
upstream phase voltage and phase current of the cable.
Enter the upstream phase voltage U1v of the line in kV
Enter the...
4. A high-voltage transmission line with a resistance of 0.31.2/km carries a current of 1000 A. The line is at a potential of 700kV at the power station and carries the current to a city located 160 km from the station. What is the power loss due to resistance in the line? b) What fraction of the transmitted power does this loss represent?
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