Analog Communication System MCQs

280 questionsElectronics-EngineeringPage 9 of 32

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 73easy
The total bandwidth needed for an AM signal at 55.25 MHz with 0.5 video modulation is
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Question 74easy
The RF section of a radio transmitter generally consists of
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Question 75easy
In AM, the modulation envelope has a peak value double the unmodulated carrier level, when the modulation is
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Question 76easy
Which of the following frequency is likely to be a3sociated with AM radio broadcast?
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Question 77easy
When El, E2, E3 etc. are the simultaneous modulating voltages, then the total modulating voltage Et will be
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Question 78easy
A transmitter radiates 9 kW with the carrier unmodulated and 10.125 kW when the carrier is sinusoidally modulated. The modulation index will be
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Question 79easy
If another sine wave, corresponding to 40% modulation, is transmitted simultaneously, determine the total radiated power
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Question 80easy
When a broadcast AM transmitter is 50% modulated, its antenna current is 12 A. What will be the current when the modulation depth is increased to 90%?
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Question 81easy
In amplitude modulation, the carrier and the modulating voltages are given by e = E sin co c c mt em = Em sin comt.The modulation index will beE 1E2 + E2E3+ E3E4+(d) Et ? (a) One of the waves is not pure sine wave
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