Question

In an FM system a 7 kHz signal modulates 108 MHz carrier so that frequency deviation is 50 kHz. The carrier swing is(a) 7.143(b) 8(c) 0.71(d) 350

Answer 1

In an FM system a 7 kHz signal modulates 108 MHz carrier so that frequency deviation is 50 kHz. The carrier swing is
(a) 7.143
(b) 8
(c) 0.71
(d) 350

answer will be -

@)7.143

thank you .

Answer 2

Answer: (a) 7.143 is the correct answer

Explanation:

Given

FM signal = 7KHz = modulating frequency

Carrier signal= 108MHz

Frequency deviation = 50KHz

To find

Carrier swing=?

We know that

Carrier swing=

(frequency deviation) /modulating frequency

= 50/7

=7.143

Hence,

The carrier swing is 7.143

FM signal is frequency modulating signal. Frequency is high in frequency modulating signal.

Frequency modulating signal is better than amplitude modulating signal.

Frequency modulating signal produces more noise over the amplitude modulating signal.

Thr broadcasting is done using frequency in frequency modulating signal system.