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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Physics
Chapter
Communication System

NTA Abhyas 2020 · Physics · Communication System

A bandwidth of 10MHz is available for AM transmission. If the...

A bandwidth of 10MHz10MHz is available for AMAM transmission. If the maximum audio signal frequency used for modulating the carrier is not to exceed 5kHz,5\text{kHz,} how many stations can be broadcasted within this band simultaneously without interfering with each other?

Correct answer

1000

Step-by-step solution

Bandwidth required for each station
=2×= 2 \times maximum frequency of audio signal
2×5=10kHz2 \times 5 = 10kHz
Number of stations which can be broadcast within bandwidth of 10MHz10MHz
=10×10610×103=1000= \dfrac{10 \times {10}^{6}}{10 \times {10}^{3}} = 1000
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