Category Archives: Digital electronics

a hilbert transformer is a which system | Ahilbert transformer is a transform has transfer function

Ahilbert transformer is a transform has transfer function ,  a hilbert transformer is a which system . Ahilbert transformer is a (a) non-linear system (b) non – causal system (c) time-varying system (d) low-pass system Answer and solution – (a) Hibert transform has transfer function H(0) = – j sgn (0) = {-j = 1… Continue reading »

Compute the convolution y[n]* = x[n] * h[n]. when x[n] = (1,2,4), h(n) = {1,1,1,1,1) | compute the convolution y(n)=x(n)*h(n) of the following signals

compute the convolution y(n)=x(n)*h(n) of the following signals , Compute the convolution y[n]* = x[n] * h[n]. when x[n] = (1,2,4), h(n) = {1,1,1,1,1) ? Power spectral density of signal x(t) is shown below. the average power is (a) 0 (b) 6 (c) 0 (d) -6 Find the signal power of x(t) (a) 0.25 W… Continue reading »

trigonometric fourier series of an even function does not have | The trigonometric Fourier series of an even function

trigonometric fourier series of an even function does not have ? answers and solution given in last. Unit Exercise – 1 (1 Mark Questions) The trigonometric Fourier series of an even function does not have the (a) DC term (b) cosine terms (c) sine terms (d) odd harmonic terms If the unit step response of… Continue reading »

obtain the Fourier transform of a rectangular pulse (gate function) shown in figure

find the fourier transform of the rectangular pulse obtain the Fourier transform of a rectangular pulse (gate function) shown in figure ? Fourier Transform (FT) Fourier Transform (FT)   fourier transform provides effective reversible link frequency domain and time domain representation of the signal. non-periodic signals can be represented with the help of fourier transform. Periodic… Continue reading »

Fourier Transform of a Periodic Signal Properties of the Continuous time Fourier Transform

Properties of the Continuous time Fourier Transform Fourier Transform of a Periodic Signal ? Fourier Transform of a Periodic Signal let the signal x(t) be periodic with period to. such signal can be expressed by exponential fourier series as x(t) = x(k) ejkt          [here,  = 2/to] where,   x(k) = 1/t   x(t) e-jkt dt taking fourier… Continue reading »

fourier series is used to solve | fourier series can be found for solved examples important questions and solutions

fourier series can be found for solved examples important questions and solutions , fourier series is used to solve which types of question or problems can be solve ? Fourier Series – Fourier Series  joseph fourier developed the theory for the study of their sinusoidal representation. named after him as fourier analysis, it is extensively… Continue reading »

relationship between laplace fourier and z transform | what is The Relationship between the Laplace, the Fourier and the z-Transform

The Relationship between the Laplace, the Fourier and the z-Transform difference , relationship between laplace fourier and z transform ?  Z-Transform z-transform   The z-transform is the discrete time counter-part of the laplace transform. infact, it can be shown to be the laplace transform of the discretiesd version of a continuous time signal x(t). in the… Continue reading »