Consider the following statements regarding the advantages of oil-filled cables?
1. No ionization, oxidation and formation of voids
2. Possibility of increased temperature range in service
3. Higher maximum permissible stresses
4. Low initial cost
Which of the above are true?1
1, 2 and 4
2
2, 3 and 4
3
1, 2 and 3
4
1, 2, 3 and 4
5
Question Not Attempted