Q20.In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitude are found to be 6 V and 2 V respectively. The modulation index is (1) 100% (2) 80% (3) 60% (4) 50%
What This Question Tests
This question directly tests the definition and formula for the modulation index in amplitude modulation, given the maximum and minimum amplitudes of the modulated wave.
Concepts Tested
Formulas Used
μ = (A_max - A_min) / (A_max + A_min)
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📋 Question Details
- Chapter
- Communication Systems
- Topic
- Amplitude Modulation
- Year
- 2022
- Shift
- 25 Jul Shift 2
- Q Number
- Q20
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 15: Communication Systems
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