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Q1:
The trigonometric Fourier series for the waveform f(t) shown below contain

A only cosine terms and zero value for the dc component

B only cosine terms and a positive value for the dc component

C only cosine terms and a negative value for the dc component

D only sine terms and a negative for the dc component

ANS:C - only cosine terms and a negative value for the dc component

Since given waveform is even, thus it will have only cosine terms. Function f(t) has more negative value then positive, so it will have negative DC Component.



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