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 253easy
The phase shift method for generation of SSB signal is most suitable for
Question 254easy
In India, the maximum frequency deviation in commercial FM broadcasting signals is about
Question 255easy
A frequency-modulated voltage wave is given as V = 10 sin (271 x 108t + 5 sin 400 nt). The carrier frequency and maximum deviation of the signal are respectively
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Question 256easy
A DSB ? SC signal is being detected synchronously. The phase error in the locally generated carrier will
Question 257easy
A RF signal is amplitude modulated to a depth of 100% by a sinusoidal signal. The ratio of modulated signal power to unmodulated carrier power is 2. AM detector 3. First AF Amplifier4. RF Amplifier
Question 258easy
The antenna current of an AM broadcast transmitter modulated to a depth of 100 by an audio sine wave isf?3 A which increases to j A due to 2 simultaneous modulation by another audio sine wave. The modulation index due to the second sine wave is
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Question 259easy
The frequency deviation produced in a VHF carrier by a signal of 100 Hz is 50 kHz. The frequency modulation index is
Question 260easy
A 8 kHz communication channel has an SNR of 30 dB. If the channel bandwidth is doubled, keeping the signal power constant, the SNR for the modified channel will be
Question 261easy
The Fourier transform of a conjugate symmetric function is always