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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does MCB stand for?
💡 Hint: Think about what the letters M, C, and B represent in terms of electrical devices.
Question 2
Easy
How does an MCB differ from a fuse?
💡 Hint: Consider the mechanism behind each device.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does an MCB do when there's an overload?
- Traps the current
- Disconnects the circuit
- Makes a sound
💡 Hint: Connect this to its safety role!
Question 2
True or False: An MCB is resettable without needing to be replaced.
- True
- False
💡 Hint: Think about how you would reactivate it.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a household circuit incorporating an MCB. Include the appliances you would connect and their total power ratings, explaining your choice of MCB rating.
💡 Hint: Calculate total power and use P=VI for guidance.
Question 2
An MCB rated at 25A trips frequently. Outline possible reasons, including suggestions for remedying the issues identified.
💡 Hint: Consider everyday household usage patterns.
Challenge and get performance evaluation