Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
1. 0.868, weakly non-uniform. 2. 19.04 mm, 51.79 mm 3. 2 kV/mm 4. (a) 19.75 kV/cm, 2.52 kV/cm, 0.357 (b) Radius of HV conductor 14 cm, 18.14 kV/cm 5. 1 kV/cm, 4 kV/cm, 100 kV/cm 6. Extremely non-uniform field 1. In a coaxial power cable the radius of the conductor is 25 mm and the thickness of insulation is 8 mm. Calculate the Schwaiger factor in this field configuration. Comment on uniformity of electric field. 2. What will be the most economical (optimum) conductor diameter of a single core power cable to be used on 132 kV power systems? Also find the diameter over the insulation provided to the conductor if the maximum permissible stress is not to exceed 8 kV/mm. 3. Two parallel plates which are oppositely charged are placed 5 cm apart. The potential difference, in volts, between the plates is 100 kV. Find the electric field intensity between them. 4. In a 220 kV rated voltage coaxial spherical system of a GIS the radius of the inner HV electrode is 10.0 cm and the SF6 gas insula- tion thickness of 18.0 cm is provided around. Find (a) The max and min electric field intensities and the Schwaiger factor in the system. (b) For the given system voltage and fixed outer radius of the coaxial system, what changes in the configuration will be needed to optimise the max field inten- sity in this system? What will be its value then? 5. If a potential of 5 kV is applied across gap distance d' of 5 cm in air between (a) the uniform, (b) weakly nonuniform and (c) extremely nonuniform field electrode systems shown in Fig. 2.1, find the maximum field intensities, Emax at the high-voltage electrode in each case? 6. In which case is the dielectric properties of air utilized least?

1. 0.868, weakly non-uniform. 2. 19.04 mm, 51.79 mm 3. 2 kV/mm 4. (a) 19.75 kV/cm, 2.52 kV/cm, 0.357 (b) Radius of HV conductor 14 cm, 18.14 kV/cm 5. 1 kV/cm, 4 kV/cm, 100 kV/cm 6. Extremely non-uniform field 1. In a coaxial power cable the radius of the conductor is 25 mm and the thickness of insulation is 8 mm. Calculate the Schwaiger factor in this field configuration. Comment on uniformity of electric field. 2. What will be the most economical (optimum) conductor diameter of a single core power cable to be used on 132 kV power systems? Also find the diameter over the insulation provided to the conductor if the maximum permissible stress is not to exceed 8 kV/mm. 3. Two parallel plates which are oppositely charged are placed 5 cm apart. The potential difference, in volts, between the plates is 100 kV. Find the electric field intensity between them. 4. In a 220 kV rated voltage coaxial spherical system of a GIS the radius of the inner HV electrode is 10.0 cm and the SF6 gas insula- tion thickness of 18.0 cm is provided around. Find (a) The max and min electric field intensities and the Schwaiger factor in the system. (b) For the given system voltage and fixed outer radius of the coaxial system, what changes in the configuration will be needed to optimise the max field inten- sity in this system? What will be its value then? 5. If a potential of 5 kV is applied across gap distance d' of 5 cm in air between (a) the uniform, (b) weakly nonuniform and (c) extremely nonuniform field electrode systems shown in Fig. 2.1, find the maximum field intensities, Emax at the high-voltage electrode in each case? 6. In which case is the dielectric properties of air utilized least?

Power System Analysis and Design (MindTap Course List)
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
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.33MCQ: The direct electrical connection of the windings allows transient over voltages to pass through the...
See similar textbooks
icon
Related questions
Question

I have provided the answer please solve question 3 step by step with explanation no ai solution handwritten solution please thank you 

1. 0.868, weakly non-uniform. 2. 19.04 mm, 51.79 mm 3. 2 kV/mm 4. (a) 19.75 kV/cm, 2.52 kV/cm, 0.357 (b) Radius of HV conductor 14 cm, 18.14 kV/cm 5. 1 kV/cm, 4 kV/cm, 100 kV/cm 6. Extremely non-uniform field
Transcribed Image Text:1. 0.868, weakly non-uniform. 2. 19.04 mm, 51.79 mm 3. 2 kV/mm 4. (a) 19.75 kV/cm, 2.52 kV/cm, 0.357 (b) Radius of HV conductor 14 cm, 18.14 kV/cm 5. 1 kV/cm, 4 kV/cm, 100 kV/cm 6. Extremely non-uniform field
1. In a coaxial power cable the radius of the conductor is 25 mm and the thickness of insulation is 8 mm. Calculate the Schwaiger factor in this field configuration. Comment on uniformity of electric field. 2. What will be the most economical (optimum) conductor diameter of a single core power cable to be used on 132 kV power systems? Also find the diameter over the insulation provided to the conductor if the maximum permissible stress is not to exceed 8 kV/mm. 3. Two parallel plates which are oppositely charged are placed 5 cm apart. The potential difference, in volts, between the plates is 100 kV. Find the electric field intensity between them. 4. In a 220 kV rated voltage coaxial spherical system of a GIS the radius of the inner HV electrode is 10.0 cm and the SF6 gas insula- tion thickness of 18.0 cm is provided around. Find (a) The max and min electric field intensities and the Schwaiger factor in the system. (b) For the given system voltage and fixed outer radius of the coaxial system, what changes in the configuration will be needed to optimise the max field inten- sity in this system? What will be its value then? 5. If a potential of 5 kV is applied across gap distance d' of 5 cm in air between (a) the uniform, (b) weakly nonuniform and (c) extremely nonuniform field electrode systems shown in Fig. 2.1, find the maximum field intensities, Emax at the high-voltage electrode in each case? 6. In which case is the dielectric properties of air utilized least?
Transcribed Image Text:1. In a coaxial power cable the radius of the conductor is 25 mm and the thickness of insulation is 8 mm. Calculate the Schwaiger factor in this field configuration. Comment on uniformity of electric field. 2. What will be the most economical (optimum) conductor diameter of a single core power cable to be used on 132 kV power systems? Also find the diameter over the insulation provided to the conductor if the maximum permissible stress is not to exceed 8 kV/mm. 3. Two parallel plates which are oppositely charged are placed 5 cm apart. The potential difference, in volts, between the plates is 100 kV. Find the electric field intensity between them. 4. In a 220 kV rated voltage coaxial spherical system of a GIS the radius of the inner HV electrode is 10.0 cm and the SF6 gas insula- tion thickness of 18.0 cm is provided around. Find (a) The max and min electric field intensities and the Schwaiger factor in the system. (b) For the given system voltage and fixed outer radius of the coaxial system, what changes in the configuration will be needed to optimise the max field inten- sity in this system? What will be its value then? 5. If a potential of 5 kV is applied across gap distance d' of 5 cm in air between (a) the uniform, (b) weakly nonuniform and (c) extremely nonuniform field electrode systems shown in Fig. 2.1, find the maximum field intensities, Emax at the high-voltage electrode in each case? 6. In which case is the dielectric properties of air utilized least?
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Power System Analysis and Design (MindTap Course …
Power System Analysis and Design (MindTap Course …
Electrical Engineering
ISBN:
9781305632134
Author:
J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS