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)

Question

Mathematics

Madonna

27 October, 10:34

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)

+4

Answers (1)

Know the Answer?

Rogelio Bowen · 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)