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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the main purpose of earthing?
π‘ Hint: Think about safety.
Question 2
Easy
Name one appliance that requires earthing.
π‘ Hint: It's often large and metal.
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 primary function of earthing?
- Isolation of electrical appliances
- Directing fault currents to ground
- Increasing voltage
π‘ Hint: Consider what happens if there's a fault.
Question 2
True or False: Earthing protects users from electric shocks.
- True
- False
π‘ Hint: Think about safety measures in electrical systems.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An electrical appliance has a faulty casing, and without earthing, the user experiences a shock. If the resistance of the fault path through the user is 50 ohms, calculate the safe path required for current flow if the appliance is operating on 240 volts.
π‘ Hint: Use Ohm's Law to find the current and think about what resistance is needed.
Question 2
Consider a lightning strike hitting a building. Describe how the earthing system should function to prevent damage and ensure safety.
π‘ Hint: Think about the role of grounding in high voltage scenarios.
Challenge and get performance evaluation