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For the signal, x(t) = log(cos(a*pi*t+d)) for a = 50 Hz, what is the time period of the signal, if...

For the signal, x(t) = log(cos(apit+d)) for a = 50 Hz, what is the time period of the signal, if periodic?

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asked Sep 28, 2022 in Signals and Systems by Lucy (1.2m points)

For the signal, x(t) = log(cos(a*pi*t+d)) for a = 50 Hz, what is the time period of the signal, if periodic?

(a) 0.16s

(b) 0.08s

(c) 0.12s

(d) 0.04s

The question was asked in unit test.

The origin of the question is Signal Classification and Properties topic in chapter Signals and Systems Basics of Signals and Systems

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1 Answer

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answered Oct 8, 2022 by leeyal (42.1k points)

Correct answer is (d) 0.04s

Explanation: Time period = 2*pi/(50)pi = 1/25 = 0.04s

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