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Bandlimited Interpolation

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Question

A band-limited signal with a maximum frequency of 5 kHz is to be sampled. According to the sampling theorem, the sampling frequency in kHz which is not valid is

A

12

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B

15

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C

5

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D

20

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Solution

The correct option is C 5
$(f_{s})_{m i n} = 2 f_{m}$
$(f_{s})_{m i n} = 2 \times 5 = 10 k H z$
So, $f_{s} \geq 10 k H z$

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