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For a given periodic sequence x (n) = {1, 1, 0, 0} with period N = 4, the Fourier coefficient is denoted by c_{k}. The Value of c_{3}* is:
Consider the following difference equation:
y[n] + 3y[n – 1] + 2y[n – 2] = 2x[n] – x[n – 1]
If y[1] = 0, y[2] = 1, x[n] = u[n], then y[n] can be represented as
The Fourier series coefficients of a periodic signal x(t), with fundamental frequency and the rest are zero. Suppose x(t) is the input to a bandpass filter with the following magnitude and phase responses.
Let y(t) be the output of the filter and the Fourier series of x(t) in the trigonometric form
x(t) and the steady state response of y(t) are
The discrete Fourier series representation for the following sequence:
For a finite support signal x[n] = r[n] (u[n] – u[n – 11]) where r[n] is the discretetime ramp function, the energy of x[n] is
The percentage of the total energy dissipated by a 1Ω resistor in the frequency band 0 < ω < 10 rad/s when the voltage across it is v(t) = e^{2t} u(t) is _________
The ztransform of a sequence x[n] is given as x(z) = 3 + 4z – 6z^{1} + 2z^{2}
If y[n] is the first difference of x[n], then y(z) is given by
The DTFT of a signal f(n) = {a, b, c, d} is F(ω). The inverse DTFT of F(ω  π) is:
What is the signal corresponding to the following ztransform? (Where u[n] is the unitstep signal)
Let If y(t) = x(t  2) then what is value of Y(e^{jω}) at ω = π is ________
The DTFT of x[n] = 0.5n u[n] using geometric series is:
A discrete time signal x[n] and its discrete Fourier transform X(k) related by Another discrete series with Fourier coefficients Y(k) given as Y(k) = X(k  4) + X(k + 4) then the corresponding sequence y[n] will be
Consider a signal y(t) = x1(t) * x_{2}(t). If x1(t) = 2 cos 4t u(t) and x_{2}(t) = sin 2t u(t). The value of y(t) at t = π / 2 is _______
The sequence x[n] is (0.7)^{n} u(n) and y (n) is x (n)*x (n). Then which of the following statement(s) is/are true?
Consider a system with frequency response of and suppose that the input to the system is x(t) = et u(t). If the output response is y(t), the value of y(1) is _______ (answer up to two decimal places)
Let denote the Fourier transform of the signal x[n], where:
The value of at n = 0 will be ________. (The arrow represents the origin)
Which of the following systems are linear timeinvariant and causal systems.
24 docs263 tests

Test: Signal & Systems 3 Test  25 ques 
Test: Signals And Systems & Microprocessors  1 Test  15 ques 
Test: Signals And Systems & Microprocessors  2 Test  20 ques 
Test: Electromagnetics  1 Test  15 ques 
Test: Electromagnetics  2 Test  20 ques 
24 docs263 tests

Test: Signal & Systems 3 Test  25 ques 
Test: Signals And Systems & Microprocessors  1 Test  15 ques 
Test: Signals And Systems & Microprocessors  2 Test  20 ques 
Test: Electromagnetics  1 Test  15 ques 
Test: Electromagnetics  2 Test  20 ques 