Data Acquisition MCQs

Practice Data Acquisition MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Measurements & InstrumentationData Acquisition

A low-pass anti-aliasing filter is placed before an ADC mainly to?

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Correct Answer: A. Limit input bandwidth before sampling

Explanation: The filter attenuates frequency components that could fold into the sampled baseband and cause aliasing.

Reference: Standard measurements and instrumentation: data acquisition

Question 2

Measurements & InstrumentationData Acquisition

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Correct Answer: C. 1024

Explanation: An N-bit ADC provides 2^N codes, so 2^10=1024.

Reference: Standard measurements and instrumentation: data acquisition

Question 3

Measurements & InstrumentationData Acquisition

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Correct Answer: A. Hold the analog input approximately constant during conversion

Explanation: The hold capacitor maintains the sampled input level while the ADC completes conversion.

Reference: Standard measurements and instrumentation: data acquisition

Question 4

Measurements & InstrumentationData Acquisition

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Correct Answer: C. 8 kHz

Explanation: The Nyquist rate is twice the highest signal frequency, so at least 8 kHz is required ideally.

Reference: Standard measurements and instrumentation: data acquisition