Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← TechnologyWhich outcome occurs when the inrush current threshold is exceeded following start-up of a large industrial induction motor?
A)nuisance tripping of circuit breaker✓
B)motor runs at reduced speed
C)localized winding hot spot formation
D)failure of overcurrent protection relay
💡 Explanation
Nuisance tripping occurs because the magnetic inrush creates a transient overcurrent that mimics a fault, activating the circuit breaker's instantaneous trip setting. This occurs therefore immediately trips the breaker, rather than allowing normal operation; sustained overload protection isn’t triggered.
🏆 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 outcome occurs when pilot valve contamination affects pressure?
- Which risk significantly escalates when three-phase power transformer breakers are tripped sequentially in a multi-transformer distribution network?
- Which risk increases when a check valve opens too rapidly in a hydraulic pump?
- Which condition occurs in a diesel engine when lubricating oil enters the combustion chamber?
- Which risk dramatically increases when quadrature encoder pulses are missed in a closed-loop robotic arm?
- Which positioning error increases when shaft encoder resolution degrades?
