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Questions and Answers
Pulse Modulation is a type of modulation that changes a sinusoidal signal according to the message signal.
False
Analog Modulation involves changing the amplitude, frequency, or phase of a carrier wave according to the modulating signal.
True
Continuous Wave Modulation includes types like PAM, PPM, and PWM.
False
In Double-Sideband, Large Carrier (AM/DSB-LC), the frequency and phase of the carrier signal change along with the amplitude.
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Modulation is used to decrease the efficiency of radiation.
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The modulation index is the ratio of the amplitude of the carrier to the amplitude of the message signal.
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The modulating signal is also known as the baseband signal.
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Vestigial-sideband (AM/VSB) is a type of single-sideband modulation.
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Modulation is mainly done to introduce noise and interference in communication systems.
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The envelop of the modulated carrier in AM is represented by A(t).
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AM/DSB-SC stands for Amplitude Modulation with Double-Sideband and Suppressed Carrier.
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The modulation index is calculated as the ratio of the message signal frequency to the carrier signal frequency.
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