Question:medium

Assertion (A): All stereo broadcasting uses quadrature carrier multiplexing (QAM). Reason (R): QAM involves more stringent synchronization than FM system with 558 subcarrier modulation.

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FM stereo uses multiplexing, not QAM.

Updated On: May 20, 2026

Both (A) and (R) are correct and (R) is correct explanation
Both (A) and (R) are correct but (R) is not explanation
(A) is correct but (R) is incorrect
(A) is incorrect but (R) is correct

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The Correct Option is D

Solution and Explanation

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Top Questions on communication systems

The percentage of the total power carried by the sidebands of the AM wave for tone modulation when the modulation index is 0.3 is:
- CUET (PG) - 2025
- Nanoelectronics
- communication systems
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Match List-I with List-II:

List-I (Modulation Schemes)	List-II (Wave Expressions)
(A) Amplitude Modulation	(I) \( x(t) = A\cos(\omega_c t + k m(t)) \)
(B) Phase Modulation	(II) \( x(t) = A\cos(\omega_c t + k \int m(t)dt) \)
(C) Frequency Modulation	(III) \( x(t) = A + m(t)\cos(\omega_c t) \)
(D) DSB-SC Modulation	(IV) \( x(t) = m(t)\cos(\omega_c t) \)

Choose the correct answer:

CUET (PG) - 2025
Nanoelectronics
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