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- Subject
- Cableselectrical-engineering-mcqs › cables
- Published
- 12 Dec 2018
- Last updated
- 28 May 2026
Explanation
The capacitance of a cable is directly proportional to the relative permittivity of its insulation. Reducing the permittivity from 4 to 2 halves the capacitance, hence the new capacitance is one half of the original.
More Cables MCQs
Practice related questions from the same subject.
- 1.Where does the highest voltage stress occur within a cable?
- 2.How does the insulation of a cable change when the length of the insulation is increased?
- 3.For a cable intended to operate at 1000 kV, which type of insulation is most suitable?
- 4.What is a key benefit of using cables instead of overhead transmission lines?
- 5.What does capacitance grading in cables refer to?
- 6.Which types of losses occur in a cable conducting alternating current?
- 7.Where is the electrostatic stress highest in underground cables?
- 8.Why are underground cables installed at a considerable depth?
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