Consumer Electronics

Fill in the Blanks

1. ____________ permit one-way communication.
2. ____________ permit two-way communication.
3. Interaction between the two fields in moving iron headphones varies the ____________ on the diaphragm causing it to ____________.
4. Plastic membranes can have much less ____________ and ____________ than metal diaphragms thereby minimising problems with ____________.
5. The impedance of crystal headphones is predominantly____________.
6. Electrostatic headphone lends itself to a ____________ configuration minimising ____________.
7. Electret electrostatic headphones are permanently ____________.
8. LED indicators in headphones indicate that the circuit is ____________.

ANSWERS

Multiple Choice Questions

1. (a)

2. (a)

3. (a)

4. (b)

5. (a)

6. (a)

Fill in the Blanks ...