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 262easy
The gain margin for the system with open-loop transfer function G(s)H(z) =and modulating signal frequency are 1 MHz and 2 kHz respectively. An appropriate value for the time constant of the envelope detector is
Question 263easy
Consider the sequence x[n]=[-4?j5 1 + j2 41 The conjugate anti-symmetric part of the sequence is
Question 264easy
A causal system having the transfer function H(s) ? ? is excited with s+21 10u(t). The time at which the output reaches 99% of its steady state value is
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Question 265easy
An AM signal is detected using an envelope detector. The carrier frequency 2(1+z)
Question 266easy
Three analog signals, having widths 1200 Hz, 600 Hz and 600 Hz, are sampled at their respective Nyquist rates, encoded with 12 bit words, and time division multiplexed. The bit rate for the multiplexed signal is
Question 267easy
The function x(t) is shown in the figure 10.12. Even and odd parts of a unit-step function u(t) are respectively,1
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Question 268easy
The power in the signal s(t)= 8 cos (207tt -+ 4 in (15710 is-2-
Question 269easy
The output y(t) of a linear time invariant system is related to its input x(t) by the following equation :y(t) = 0.5x (t - td + T) + x(t - td) + 0.5x (t - td - T). The filter transfer function H(D) of such a system is given by
Question 270easy
For a signal x(t) the fourier transform is X(/). Then the inverse Fourier transform of X(3f + 2) is given by