Audio signal cannot be transmitted because - Vidyadip

MCQ

Audio signal cannot be transmitted because

A
The signal has more noise
B
The signal cannot be amplified for distance communication
C
The transmitting antenna length is very small to design
✓
The transmitting antenna length is very large and impracticable / The signal is not a radio signal

✓

Answer

Correct option: D.

The transmitting antenna length is very large and impracticable / The signal is not a radio signal

Following are the problems which are faced while transmitting audio signals directly.
(i) These signals are relatively of short range.
(ii) If every body started transmitting these low frequency signals directly, mutual interference will render all of them ineffective.
(iii) Size of antenna required for their efficient radiation would be larger i.e. about $75 \mathrm{~km}$.

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