GATE ECE 2002 | GATE ECE Year Wise Previous Years Questions

GATE ECE 2002

MCQ (Single Correct Answer)

-0.3

A linear phase channel with phase delay $${\tau _p}$$ and group delay $${\tau _g}$$ must have

$$\,{\tau _p} = {\tau _g} = $$ constant

$${\tau _p}\infty \,\,f\,and\,{\tau _g}\infty \,f$$

$${\tau _p}$$ = constant and $${\tau _g}\infty \,f$$

$${\tau _p}\infty \,f\,and\,\,{\tau _g}$$ =constant ($$f$$denotes frequency)

GATE ECE 2002

MCQ (Single Correct Answer)

-0.3

Which of the following cannot be the Fourier series expansion of a periodic signal?

x(t) = 2cos t + 3 cos 3t

x(t) = 2cos $$\mathrm\pi$$t + 7 cos t

x(t) = cos t + 0.5

x(t) = 2cos 1.5$$\mathrm\pi$$t + sin 3.5 $$\mathrm\pi$$t

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