Electronics and Communication Engineering - Measurements and Instrumentation - Discussion

Discussion Forum : Measurements and Instrumentation - Section 2 (Q.No. 35)
35.
In a digital measuring device the input electrical signal is in the frequency range of dc to ac (50) Hz. It must be sampled at a rate of
f times/sec
0.5 f times/sec
0.25 f times/sec
2 f times/sec
Answer: Option
Explanation:

Sampling frequency must be twice the input frequency.

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