MCQ
Submarine cables act as
- Aspherical capacitor
- Bcylindrical capacitor with inner cylinder earthed
- Ccylindrical capacitor with inner cylinder earthed
- Dcylindrical capacitor with outer cylinder earthed
✓
Answer
(d) cylindrical capacitor with outer cylinder earthed
Explanation: A submarine cable consists of an inner conductor which carries power. This conductor is covered by an insulator, which acts as a dielectric. The dielectric material is covered by a metal coating called shield, which is connected to ground. The cable acts as a cylindrical capacitor, with the conductor acting as the inner cylinder, and the metal shield as the outer cylinder which is connected to earth.
Explanation: A submarine cable consists of an inner conductor which carries power. This conductor is covered by an insulator, which acts as a dielectric. The dielectric material is covered by a metal coating called shield, which is connected to ground. The cable acts as a cylindrical capacitor, with the conductor acting as the inner cylinder, and the metal shield as the outer cylinder which is connected to earth.
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