8. Give symbol of impedance coil.
9. What are the principal parts of an induction coil?
10. What is the function of an induction coil in telephony?
11. What is a repeating coil and how does it differ from an induction coil?
12. Give conventional symbols of induction coils and repeating coils.
13. Enumerate the different types of non-inductive resistance devices and give a short description of each.
14. Define condenser.
15. What is the meaning of the word dielectrics?
16. State what you understand by the specific inductive capacity of a dielectric.