2. A power transmission line is made of copper 1.80cm in diameter. Find the resistance of one mile of this line.
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Good day, sir/ma'am. Here is the final question which I require assistance with. Thank you very much.
Question:
- A power transmission line is made of copper 1 .80cm in Find the resistance of one mile of this line.
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- A string of suspension consists of four (4) units. The Voltage between each pin and earth is 0.05 of the Self-Capacitance of the unit. The Voltage between the Line Conductor and earth is 90 KV. Find the Voltage distribution across each unit. Draw the diagram.If the cross sectional area of a conductor is doubled, then the resistance of the conductor remains the same. becomes half of the initial value. becomes double the initial value. becomes four times the initial value.i) Calculate V1 and V2 for the voltage across the string insulator having phase voltage of 33kV for transmission line using details tabulated in the Table 3(a). Table 3(a) Type of Insulator Shunt Capacitance between each unit 0.1 C String to junction Self -Capacitance of each insulator ii) With the help of a suitable schematic diagram and necessary theoretical explanation, illustrate how to improve the efficiency of the suspension insulator.
- A cable is tested by loss of charge Method using a Ballistic galvanometer with following results : Discharged immediately after electrification deflection 200 divisions. Discharged after 30 second and after electrification (i) Deflection 126 divisions (ii) When in parallel with a resistance of 10 V deflection 100 divisions. Calculate the insulation resistance of the cable.A transmission line cable consists of 19 strands of identical copper conductors, each 1.5 mm in diameter. The length of the cable is 2 km but because of the twist of the strands, the actual length of each conductor is increased by 5 percent. What is resistance of the cable ? Take the resistivity of the copper to be 1.78 ×10^–8 m.INSULATORS A string of suspension consists of four (4) units. The Voltage between each pin and earth is 0.14 of the Self-Capacitance of the unit. The Voltage between the Line Conductor and earth is 135 KV. Find the Voltage distribution across each unit. Draw the diagram.
- The force between two long parallel conductors is 15 kg/meter. The conductor spacing is 10 cm. If one conductor carries twice the current of the other, calculate the current in each conductor.8. The resistance of a conductor depends only on the cross sectional area of the conductor. True False3. A two conductor main A B, 500 m in length is fed from both ends at 250 volts. Loads of 50 A, 60 A, 40 A and 30 A are tapped at distance of 100 m, 250 m, 350 m and 400 m from end A respectively. If the X- section of conductor be 1 cm and specific resistance of the material of the conductor is 1-7 u 2 cm, determine the minimum consumer voltage. 1245-07 VI
- Write a brief report on the electrical power subject that was studied in the first course of the academic year 2022-2023, indicating the following 1- The method used to choose the cross-sectional area of the conductor that carries electrical energy, and is choosing a large TORREOTILLE cross-sectional area better than choosing a small cross-sectional area or vice versa? Between that 2- The three possible ways to improve the efficiency of the series of insulators cups of transmission lines and The voltages on these insulators are regular, and which methods are most commonly used and why? redistribute them 3- Why is the geometric average distance (GMD) of two different conductors in the transmission line equal while the average geometric radius (GMR) of these two conductors in the same transmission line is not equal? 4- Did your impression of electrical engineering differ after studying this subject, or did it not have the ability? electrical) no effect whatsoever?Figures / Diagrams, equations and solving of problems should be written by hand. Take a picture of it and attach it inside the word file. a) High Voltages are preferred for Transmission of Electricity. Why? b) Why Generation Voltage Levels are low in the range of 11 kV/ 33 kV etc? c) Why ACSR Conductors are preferred over Copper Conductors? d) Overhead Transmission Lines are preferred for Transmission of Power for Long Distances, why? e) Alternating Current is preferred over Direct Current in Power System, Why? f) Write the Installed Generation Capacity of Sultanate of Oman with current energy share of Conventional and Non-Conventional Energy Sources. g) Why the Capacitance effect is neglected in Short Transmission Line. h) Distinguish between Lumped or Distributed elements in a Transmission Line.PROBLEM SOLVING NO. 2: A string of suspension consists of four (4) units. The Voltage between each pin and earth is 0.08 of the Self-Capacitance of the unit. The Voltage between the Line Conductor and earth is 110 KV. Find the Voltage distribution across each unit. Draw the diagram.