Electrical Engineering MCQ on Power System Protection
Thermal circuit breaker has
- Delayed trip action
- Instantaneous trip action
- Both of these
- None of these
Correct answer: 1. Delayed trip action
About Circuit breakers
Circuit breakers are the “final control elements” of the electric power industry, akin to control valves in the process industries. They are strictly on/off devices, used to make and break connections under load in power systems. Circuit breakers automatically open when dangerous circuit conditions are detected. Continue reading here
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