Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← TechnologyWhich outcome occurs when a large DC motor experiences armature circuit sparking?
A)Electromagnetic interference increases rapidly✓
B)Brush contact area self-optimizes
C)Commutator efficiency reaches maximum
D)Bearing lubrication prevents seizing completely
💡 Explanation
Increased radio frequency noise results because the armature circuit sparking generates broad-spectrum electromagnetic energy. The mechanism is Electromagnetic Interference or EMI. Therefore, interference rises; rather than optimizing, lubricating, or perfecting commutator efficiency at this condition.
🏆 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 Technology →- Which consequence results when hydraulic servo valve deadband exists in an automatic milling machine?
- Which mechanism causes a helicopter's tail rotor to lose effectiveness during landing in strong crosswinds?
- Which outcome occurs when a fighter jet's flight control system incorrectly interprets pilot yaw commands at transonic speeds?
- Which outcome occurs when a bipolar junction transistor (BJT) experiences temperature-induced avalanche breakdown?
- During peak demand on a three-phase power grid, which outcome occurs when distributed generator voltage phase angles lag?
- Which outcome occurs when an aircraft's stability augmentation system (SAS) excessively counteracts pilot input?