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📝 Dual Slope A/D Converter in 8085 Microprocessor

📖 From An Introduction To Microprocessor 8085 • 13. Interfacing Data converters: A/D and D/A Converters • 14 questions available

Practice MCQs for Dual Slope A/D Converter in 8085 Microprocessor. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-30

4
Easy Questions
6
Medium Questions
4
Hard Questions

📝 Sample Questions

Q1. What is the primary advantage of a dual‑slope analog‑to‑digital converter compared with other ADC types?

🔹 A. High conversion speed
🔹 B. Low manufacturing cost
🔹 C. Excellent noise rejection
🔹 D. Minimal power consumption

💡 Difficulty: easy | ✅ Correct: C

Q2. Why does the dual‑slope ADC provide good rejection of line‑frequency (e.g., 60 Hz) noise?

🔹 A. Its integration time can be chosen as an integer multiple of the noise period
🔹 B. It uses a high‑speed comparator that filters out low‑frequency components
🔹 C. The reference voltage is modulated to cancel the noise
🔹 D. The converter operates only during the positive half‑cycle of the mains waveform

💡 Difficulty: medium | ✅ Correct: A

Q3. What is the effect of increasing the reference voltage on the conversion time of a dual‑slope ADC, assuming a fixed integration period?

🔹 A. Conversion time decreases because the de‑integration slope becomes steeper
🔹 B. Conversion time increases because the integrator must charge to a higher level
🔹 C. Conversion time remains unchanged; only the count range changes
🔹 D. Conversion time doubles regardless of integration period

💡 Difficulty: hard | ✅ Correct: D

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