Q. Which one condition is true to check the periodically for discrete time signal (where K is any integer, N is period, f₀ is frequency of signal)

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Q. If v(t) = 0 for t < 0 and e^(-αt) for t ≥ 0 V(jω) = 1/(α + jω).

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Q. The term 'energy spectral density' is associated with

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Q. If f(t) = 1, F(jω) = 2π δ(ω).

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Q. The state equations are in the form

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Q. (SI - A)¯¹ = adj(sI - A)/det (sI - A)

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Q. The eign values of n x n matrix A are the root of the characteristic equation 1λI - AI = 0

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Q. A signal is x + f(t) where x is constant and f(t) is a power signal with zero mean value. The power of the signal is

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Q. A pulse function can be represented as difference of two equal step functions.

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Q. A system with input x[n] and output y[n] is given as y[n] = (sin 5/6 πn) x(n) The system is

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Q. unit step is a

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Q. The n state variables can be considered as n components of a state vector.

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Q. Following is a reason of distortion in communication system

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Q. Short circuit is the dual of open circuit.

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Q. Highest value of Autocorrelation of a function 100 cos 50 πt is

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Q. Which one of the following is the correct statement?

The region of convergence of z transform of x[n] consists of the values of z for which x[n] r¯ⁿ is

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Q. A linear discrete time system has the char. equation z³ - 0.81z = 0, the system is

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Q. Energy density function is always

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Q. Which of the following is/are not a property/properties power spectral density function Sx(ω)?

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Q. A casual LTI system is described by the difference equation

2y[n] = αy[n - 2] - 2x[n] + βx[n -1]

The system is stable only if

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