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Q#1 Z Transform GATE EE 2017 MCQ +1 mark -0.33 marks

The pole-zero plots of three discrete-times systems P, Q and R on the z-plane are shown below.

        

Z:\PY\EE\Redreaw figure\Signal & System\updated\Signal & system\182-14.jpg

Which one of the following is TRUE about the frequency selectivity of these systems?

All three are high-pass filters.

All three are band-pass filters.

All three are low-pass filters.

P is a low-pass filter, Q is a band-pass filter and R is a high-pass filter.

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