EXERCISE I Write True if the statement is correct and change the underlined word if the statement is false. Write your answers on the space provided. 1. Operating any appliances with a wet hand is unsafe.
2. If you happen to touch with your bare hands an uninsulated wire, it is safe if it has low current.
3. Blown out fuse can be replaced with a jumper wire.
4. A circuit breaker automatically shuts down if there is overloading in the circuit. 5. When the circuit breaker automatically shuts down, it is proper to reset it even without inspecting the conducting wire for any short circuit.
6. Your washing machine and refrigerator should have proper earthing for safe operation.
7. The refrigerator has double insulation that functions as a second layer to protect the user from electric shock. 8. It is a good practice to connect the computer set to a voltage regulator to protect it from overloading.
9. It is safe if a household line consumed 30 A of current even if its circuit breaker has only 20 A capacity.
10. It is unsafe to consume 35 A of current if the fuse has only 30 A capacity.
11. Grounded circuit happens when current takes a short cut to a zero-resistance conducting wire instead of passing through the load.
12. Short circuit happens when a live wire is in direct contact with the metal casing of the appliances.
13. Earthing protects the appliance user from the grounded appliances 14. Fuse and circuit breaker are safety devices that open the circuit when there is overloading.
15. A fuse should be replaced immediately once it has blown up. answers on the space provided.​