Signals-and-systems Questions Set 17:
All causal systems must have a ____.
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If L-1{F(s)} = f(t), what is the value of L-1{F'(s)}?
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The Fourier series of X[k] = jδ[k-1] - jδ[k+1] is:
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The time period of the signal x(t) = cos(4π t/5) + sin(2π t/3) is
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A signal is a physical quantity which does not vary with _____.
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The even part of the signal y(t) = e-99t * cos(t) is
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A generator is feeding power to a transmission line of characteristic impedance Z0. The line is terminated in impedance ZL. Standing waves will be set up if:
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What is the frequency shifting property of continuous-time Fourier series?
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Two systems are connected in parallel. The impulse response of the first system is h1(n) = {0.5, -1, 2, -5}. Find the impulse response h2(n) of the second system such that the whole system becomes memoryless.
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Four signals g1(t), g2(t), g3(t) and g4(t) are to be multiplexed and transmitted. g1(t) and g4(t) have a bandwidth of 4 kHz, and the remaining two signals g2(t) and g3(t) have a bandwidth of 8 kHz. Each sample requires 8 bits for encoding. What is the minimum transmission bit rate of the system?
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