Select the correct equation that represents an am signal.

a. s (t) = ac[1 + μam cos (2πfmt) ] cos (2πfct)

b. s (t) = ac cos [2πfct + βfm * sin (2πfmt) ]

c. s (t) = ac cos [2πfct + μp cos (2πfmt) ]

d. c (t) = ac cos (2πfct ± φ)

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Mathematics

19 September, 21:37

Select the correct equation that represents an am signal.

a. s (t) = ac[1 + μam cos (2πfmt) ] cos (2πfct)

b. s (t) = ac cos [2πfct + βfm * sin (2πfmt) ]

c. s (t) = ac cos [2πfct + μp cos (2πfmt) ]

d. c (t) = ac cos (2πfct ± φ)

+2

Answers (1)

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Conner Scott · Answer 1

The first choice,

... a. s (t) = ac[1 + μam cos (2πfmt) ] cos (2πfct)

has the carrier frequency cos (2πfct) amplitude modulated by the message signal.

The other expressions represent frequency and phase modulation of various kinds.

Select the correct equation that represents an am signal.a. s (t) = ac[1 + μam cos (2πfmt) ] cos (2πfct)b. s (t) = ac cos [2πfct + βfm * sin (2πfmt) ]c. s (t) = ac cos [2πfct + μp cos (2πfmt) ]d. c (t) = ac cos (2πfct ± φ)

Select the correct equation that represents an am signal.

a. s (t) = ac[1 + μam cos (2πfmt) ] cos (2πfct)

b. s (t) = ac cos [2πfct + βfm * sin (2πfmt) ]

c. s (t) = ac cos [2πfct + μp cos (2πfmt) ]

d. c (t) = ac cos (2πfct ± φ)