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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a ring main?
💡 Hint: Think about how multiple devices can connect in your house.
Question 2
Easy
Why is a voltage drop important to consider?
💡 Hint: Consider what happens when devices don't receive enough voltage.
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 is the purpose of a ring main?
- To connect multiple devices in series
- To provide a safe connection to many sockets
- To reduce voltage drop
💡 Hint: Think about how your home sockets are wired together.
Question 2
True or False: The voltage drop in a circuit is not significant when designing household wiring.
- True
- False
💡 Hint: Consider why appliances need proper voltage.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A household has a circuit with a total of 12 sockets, each drawing 8 A. If the supply is 240 V, analyze the total current running and determine if the wiring is adequate if each wire can handle 20 A.
💡 Hint: Always check the rating against the load.
Question 2
If a length of 50 m of 1.5 mm² copper wire carries 20 A, what is the voltage drop? Consider that the resistance of 1.5 mm² wire is approximately 0.012 Ω/m.
💡 Hint: Start with calculating the wire's total resistance.
Challenge and get performance evaluation