Class 7 Exam > Class 7 Questions > Why are MCBs preferred over traditional fuses...
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Why are MCBs preferred over traditional fuses?
- a)They are cheaper
- b)They prevent circuit overloads by automatically switching off
- c)They reduce electricity bills
- d)They increase current flow in circuits
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Why are MCBs preferred over traditional fuses?a)They are cheaperb)They...
MCBs are automatic switches that cut off the current during overloads or short circuits, making them more reliable and easy to reset than fuses.
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Why are MCBs preferred over traditional fuses?a)They are cheaperb)They...
Why MCBs are Preferred Over Traditional Fuses
When it comes to electrical safety and efficiency, Miniature Circuit Breakers (MCBs) hold several advantages over traditional fuses. The key reason for this preference lies in their ability to automatically switch off during overloads.
Automatic Switching Off
- MCBs are designed to detect faults in the circuit, such as overloads or short circuits.
- When an overload occurs, the MCB automatically trips and disconnects the circuit, preventing potential damage to electrical devices and reducing fire risks.
Convenience and Reusability
- Unlike traditional fuses, which need to be replaced once blown, MCBs can simply be reset after they trip.
- This feature saves time and effort, as users do not need to keep spare fuses on hand.
Faster Response Time
- MCBs react much quicker to faults compared to fuses, providing better protection for electrical appliances.
- This rapid response minimizes damage to devices, enhancing their lifespan and reliability.
Enhanced Safety
- MCBs not only protect against overloads but also protect against short circuits, making them a more comprehensive safety solution.
- This dual protection significantly lowers the risk of electrical hazards in homes and workplaces.
In summary, the preference for MCBs over traditional fuses is primarily due to their ability to automatically switch off during overloads, providing enhanced safety, convenience, and efficiency in electrical systems.
When it comes to electrical safety and efficiency, Miniature Circuit Breakers (MCBs) hold several advantages over traditional fuses. The key reason for this preference lies in their ability to automatically switch off during overloads.
Automatic Switching Off
- MCBs are designed to detect faults in the circuit, such as overloads or short circuits.
- When an overload occurs, the MCB automatically trips and disconnects the circuit, preventing potential damage to electrical devices and reducing fire risks.
Convenience and Reusability
- Unlike traditional fuses, which need to be replaced once blown, MCBs can simply be reset after they trip.
- This feature saves time and effort, as users do not need to keep spare fuses on hand.
Faster Response Time
- MCBs react much quicker to faults compared to fuses, providing better protection for electrical appliances.
- This rapid response minimizes damage to devices, enhancing their lifespan and reliability.
Enhanced Safety
- MCBs not only protect against overloads but also protect against short circuits, making them a more comprehensive safety solution.
- This dual protection significantly lowers the risk of electrical hazards in homes and workplaces.
In summary, the preference for MCBs over traditional fuses is primarily due to their ability to automatically switch off during overloads, providing enhanced safety, convenience, and efficiency in electrical systems.
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Why are MCBs preferred over traditional fuses?a)They are cheaperb)They prevent circuit overloads by automatically switching offc)They reduce electricity billsd)They increase current flow in circuitsCorrect answer is option 'B'. Can you explain this answer? for Class 7 2025 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Why are MCBs preferred over traditional fuses?a)They are cheaperb)They prevent circuit overloads by automatically switching offc)They reduce electricity billsd)They increase current flow in circuitsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why are MCBs preferred over traditional fuses?a)They are cheaperb)They prevent circuit overloads by automatically switching offc)They reduce electricity billsd)They increase current flow in circuitsCorrect answer is option 'B'. Can you explain this answer?.
Why are MCBs preferred over traditional fuses?a)They are cheaperb)They prevent circuit overloads by automatically switching offc)They reduce electricity billsd)They increase current flow in circuitsCorrect answer is option 'B'. Can you explain this answer? for Class 7 2025 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Why are MCBs preferred over traditional fuses?a)They are cheaperb)They prevent circuit overloads by automatically switching offc)They reduce electricity billsd)They increase current flow in circuitsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why are MCBs preferred over traditional fuses?a)They are cheaperb)They prevent circuit overloads by automatically switching offc)They reduce electricity billsd)They increase current flow in circuitsCorrect answer is option 'B'. Can you explain this answer?.
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