Q461
Open questionIf x1(t) = 2sinπt + cos4πt and x2(t) = 2sin5πt + 3sin13πt, then
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ECE · all questionsSignal Processing
Signal Processing
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Q462
Open questionA data sequence x[n] = {1, 2, 3, 4, 5} passes through a linear time-invariant system with impulse response h[n] = {5, 4, 3, 2, 1}. The output of the filter will be
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Q463
Open questionFor a random variable 'x' having the probability density function (PDF) as shown in the above figure, what are the values of the mean and the variance, respectively?
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Q464
Open questionIf the impulse response of a discrete-time system is h[n] = -5nu[-n - 1], then the system function H(z) is equal to
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Q465
Open questionFor distortion less transmission through LTI system phase of H(ω) is
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Q466
Open questionThe autocorrelation of wide-sense random process is given by e-2|τ|. The peak value of the spectral density is
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Q467
Open questionIf the cumulative distribution function is Fx(x) then the probability density function fx(x) is given as
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Q468
Open questionThe fundamental period T of a periodic-continuous time signal x(t), is
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Q469
Open questionThe periodic signal x(t) = 5cos(ω0t + 30°), signal is periodic with fundamental period . . . . . . . .
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Q470
Open questionMatch List-I with List-II and select the correct answer using the options given below:
| List-I (Functions in the time domain) | List-II (Fourier transform of the function) |
| a. Delta function | 1. Delta function |
| b. Gate function | 2. Gaussian function |
| c. Normalized Gaussian | 3. Constant function |
| d. Sinusoidal function | 4. Sampling Function |
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Q471
Open questionThe signal is ideally sampled at a sampling frequency of 15 Hz. The sampled signal is passed through a filter with impulse response The filter output is
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Q472
Open questionLet {x_1}\left( t \right) = \left\{ {\begin{array}{*{20}{c}}
6&{{\text{for }}0 < t < 4} \\
0&{{\text{otherwise}}}
\end{array}} \right.{\text{and }}{x_2}\left( t \right) = u\left( {t - 2} \right) and y(t) = x1(t) * x2(t), then the value of y(4) is
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Q473
Open questionThe impulse response of a causal, linear, time-invariant, continuous-time system is h(t). The output y(t) of the same system to an input x(t), where x(t) = 0 for t < -2, is
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Q474
Open questionGiven that h(t) = 10e-10u(t), and e(t) = sin10t.u(t), the Laplace transform of the signal is given by
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Q475
Open questionConsider a 51 tap linear phase FIR filter operating at a sampling frequency of 10 kHz. The delay of this linear phase FIR is:
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Q476
Open questionA digital filter has transfer function If the filter has to rejecta 50 Hz interference from the input, then the sampling frequency for the input signal should be:
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Q477
Open questionA linear time invariant system has an impulse response e2t, for t > 0. If initial conditions are zero and the input is e3t, the output for t > 0 is
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Q478
Open questionThe z-transform of the discrete time signal x(n) = u(n)*u(n) with '*' being convolution is
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Q479
Open questionIf a linear time invariant system is excited by a true random single like white noise, the output of the linear system will have which of the following properties?
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Q480
Open questionGiven the 'Energy Spectrum Density, Sxx(f) of a sequence x(n)
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