Unit 1

3. “An emf is induced in a coil if it links a changing flux”. This law is given by……..
6. The energy cannot be created or destroyed but it can be…..
11. This device converts mechanical energy into Electrical Energy
12. This law play an important role in the understanding of the various EMEC devices.
14. Microphones, loudspeakers etc. devices handle …. energy signals.
15. Synchronous motors, dc shunt machines are the examples of …….. excited system.

1. ….. which converts electrical energy into mechanical energy.
2. Example of Doubly excited system
4. Example of Doubly excited system
5. How many Type of EMEC devices are in use
7. The process of EMEC is basically ……….. in nature.
8. This form of energy is rarely available naturally & it is required to produce it.
9. Co-energy has no physical significance but it is important in obtaining …… forces.
10. A Perfect Energy ……… exists in the process of EMEC.
13. Electromagnetic Relay, toroid coil are the examples of …..excited system.