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