Analog Communication System MCQs
Practice free Analog Communication System multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 280 questions — no login required.
Question 82easy
The ratio of the total power in amplitude modulated wave to the unmodulated carrier power is given by
Question 83easy
The antenna current of an AM transmitter is 8 amperes when only the carrier is sent. It increases to 8.8 amperes when the carrier is sinusoidally modulated. The percentage modulation is
Question 84easy
A 1000 kHz carrier is simultaneously modulated with 300 Hz, 800 Hz and 2 kHz audio sine waves. The frequencies present in the output will be
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Question 85easy
A 360 W carrier is simultaneously modulated by two audio waves with modulation percentage of 55 and 65 respectively. The total side band power radiated will be
Question 86easy
A radio transmitter, amplitude modulated radiates 50 kW of carrier power. The radiated power at 85% modulation will be
Question 87easy
The output current of a 60% modulated AM generator is 1.5 A. To what value will this current rise if the generator is modulated additionally by another audio wave whose modulation index is 0.7
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Question 88easy
Now if the maximum depth of modulation is restricted to 70%, the new maximum side band power generated will be
Question 89easy
Which of the following will carry the same information as the AM wave itself?
Question 90easy
A balanced modulator produces