Principle of Communication

sky wave ✘ ultrasonic wave ✘ sound wave ✘ ground wave ✔

Side bands ✘ Carrier terms ✘ Both (a) and (b) ✘ None of these ✔

Non-uniform ✘ Uniform ✘ Linear ✘ Both (b) and (c) ✔

10 ✘ 20 ✘ 50 ✘ 80 ✔

Telephone links ✘ Satellite links ✘ Computer to computer links ✘ None of these ✔

Along wires ✘ In space ✘ In wave guides ✘ None of these ✔

Independent of message band width ✘ Dependent of message band width ✘ Both (a) and (b) ✘ None of these ✔

01:00

✘

01:02

✘

02:00

✘ None of these ✔

Noise is very high for high frequency signals ✘ High modulation power is required ✘ Larger band width is required ✘ None of these ✔

Save tooth wave generator ✘ Clipping and squaring circuits ✘ Both (a) and (b) ✘ None of these ✔