Question:medium

Match the following: A: ASK, B: APK, C: PSK, D: FSK

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ASK changes amplitude, PSK changes phase and FSK changes frequency of the carrier signal.

Updated On: Jun 25, 2026

A-IV, B-I, C-II, D-III
A-III, B-II, C-I, D-IV
A-II, B-III, C-IV, D-I
A-I, B-IV, C-III, D-II

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The Correct Option is A

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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:
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Match List-I with List-II:

List-I (Modulation Schemes)	List-II (Wave Expressions)
(A) Amplitude Modulation	(I) \( x(t) = A\cos(\omega_c t + k m(t)) \)
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(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:

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