A fuse in a motor circuit provides protection against__________?
Correct answer: B. short-circuit and overload
- A. overload
- B. short-circuit and overload
- C. open circuit, short-circuit and overload
- D. none of the above
Explanation
A fuse opens the motor circuit when excessive current flows, covering short-circuit current and sufficiently sustained overload current. In practical motor installations, a separate overload relay is commonly added because fuses are mainly relied on for short-circuit protection.
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