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Question
What is the advantage of using an MCB over a fuse?
What is the advantage of using an MCB over a fuse?
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Solution
The correct option is B MCB is reusable.
When an excessive current flows through the circuit, the MCB automatically trips or switches off. This means MCB shuts down the system whenever there is an excessive current flowing for a longer period of time and there is a danger to the entire circuit. Tripping stops the flow of electric current, thus protecting the device from excessive current. This response of MCB is faster than a fuse. One can manually turn on the MCB to use it again in the circuit. Unlike a fuse, MCB does not have to be replaced every time after a failure as it can be reused.
MCB costs more than a fuse because MCBs have a complex construction and are an improvement over fuses. So, they are more expensive than fuses.
Thus, among the given options, option B is the only correct advantage of using an MCB over a fuse.
When an excessive current flows through the circuit, the MCB automatically trips or switches off. This means MCB shuts down the system whenever there is an excessive current flowing for a longer period of time and there is a danger to the entire circuit. Tripping stops the flow of electric current, thus protecting the device from excessive current. This response of MCB is faster than a fuse. One can manually turn on the MCB to use it again in the circuit. Unlike a fuse, MCB does not have to be replaced every time after a failure as it can be reused.
MCB costs more than a fuse because MCBs have a complex construction and are an improvement over fuses. So, they are more expensive than fuses.
Thus, among the given options, option B is the only correct advantage of using an MCB over a fuse.
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