📝 Analog to Digital Conversion

📖 From Data Communication & Networks • 4. Digital Transmission • 33 questions available

Practice MCQs for Analog to Digital Conversion. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-06-28

Easy Questions

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📝 Sample Questions

Q1. What is the most common technique for converting an analog signal to digital data?

🔹 A. Delta Modulation

🔹 B. Pulse Code Modulation (PCM)

🔹 C. Amplitude Modulation

🔹 D. Frequency Modulation

💡 Difficulty: easy | ✅ Correct: B

Q2. What is the effect of sampling below the Nyquist rate?

🔹 A. The original signal can still be reconstructed.

🔹 B. Aliasing occurs, and the original signal cannot be properly reconstructed.

🔹 C. The signal becomes digital.

🔹 D. There is no effect.

💡 Difficulty: medium | ✅ Correct: B

Q3. What is the purpose of companding in PCM?

🔹 A. To increase the sampling rate.

🔹 B. To reduce the quantization error for low-amplitude signals.

🔹 C. To increase the data rate.

🔹 D. To reduce the number of quantization levels.

💡 Difficulty: hard | ✅ Correct: B

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