Full access allows:
- Solve all tests online without limits;
- Remove all advertisements on website;
- Adding questions to favorite list;
- Save learning progress;
- Save results of practice exams;
- Watching all wrong answered questions.
- Homepage »
- Chief Engineer (Steam-Motor-Gas Turbine Plants (Limited)) »
- Q604 - Electrical, Electronic, & Control Engineering
30. Due to the operating characteristics of the system, time lag fuses (or dual-element fuses) are necessary for use in what types of circuits?
Time lag fuses are required for motor starting circuits because motors draw a high inrush current during startup that would trip a standard fuse. These fuses tolerate brief overcurrents while protecting against sustained overloads or faults. Emergency, general alarm, and main lighting circuits require fast-acting protection to quickly clear faults or maintain reliability, and do not experience the high inrush currents that necessitate time lag fuses.
Comments (0)
There are no comments at the moment. If you found an error or think question is incorrect, tell everyone about it
Only signed in users can write comments
Signin