Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich failure occurs when a high voltage DC transmission line charges an underground cable's capacitance?
A)Dielectric breakdown across cable insulation✓
B)Increased skin effect within the conductor
C)Corona discharge around support structures
D)Ferranti effect inducing voltage drops
💡 Explanation
Dielectric breakdown can occur because charging the cable capacitance causes a high electric field stress across the insulator exceeding its breakdown strength. This results in insulation failure, rather than skin effect or corona which relate AC-specific phenomenon.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which mechanism causes signal attenuation when electromagnetic waves propagate through humid air?
- Which outcome is favored because a high concentration gradient of hydrogen ions exists across a thylakoid membrane?
- Which mechanism causes light reduction through polarizing filters?
- Which consequence results when an astronaut exceeds g-force limits?
- Which consequence occurs due to the event horizon of a non-rotating black hole reaching the Planck length?
- Which phenomenon limits reaction rate when an enzyme's Michaelis constant (Km) is significantly higher than substrate concentration?