Mains Electricity

1. Give the name of the bus bar to which all the neutral wires of a home consumer circuit are connected to:

Question 1 of 22

2. Mention the overall level of voltage stepped down from the national grid to a local transformer?

Question 2 of 22

3. Which of the following is NOT a source of Mains electricity supply?

Question 3 of 22

4. Mention the bus bars contained in a consumer fuse box

Question 4 of 22

5. Which of the following statements is CORRECT about a fuse?

Question 5 of 22

6. Name the electrical component used, to safe guard against excessive currents in a circuit

Question 6 of 22

7. Mention the dangers of high voltage transmission?

Question 7 of 22

8. Mention the name of the bus bar connected to the live wire

Question 8 of 22

9. Why are aluminum cables preferred for transmitting electrical power over a long distance?

Question 9 of 22

10. State the difference between a fuse and a circuit breaker's?

Question 10 of 22

11. Why is the cooker circuit wire very thick compared to the other circuit wires?

Question 11 of 22

12. Which of the following is not among the items which are contained in a home consumer fuse box?

Question 12 of 22

13. Give the main importance of the national grid system

Question 13 of 22

14. What is the electrical power for domestic consumption?

Question 14 of 22

15. Why is the lighting wire very thin compared to the other circuit's?

Question 15 of 22

16. Which kind of electrical appliance possess a risk of electric shock?

Question 16 of 22

17. From the transformer, power is brought to the house through a two wire cable; Mention them

Question 17 of 22

18. Electrical Energy = POWER x TIME and its S.I UNIT IS J/s. True or False?

Question 18 of 22

19. Is it possible to step up or step down steady d.c voltage?

Question 19 of 22

20. How do you reduce power losses during transmission of electricity?

Question 20 of 22

21. A national grid is a system of power cables connecting all stations in a country to each other and finally to the consumers. True or False?

Question 21 of 22

22. Which type of circuit is often not earthed as a necessity?

Question 22 of 22