78553. State variable formulation is very suitable for computer solution.
78554. If ξ f(t) = F(jω), ξf(t-a) =
78555. The two inputs to an analogue multiplier are x(t) and y(t) with fourier transforms X(f) and Y(f) respectively. The output Z(t) will have a transform Z(f) given by
78556. The units of the spectrum obtained be Fourier transforming the covariance function of a stationery Stochastic Process is
78557. FIR digital filter having __________ stability than FIR filter.
78558. A voltage v(t) which is a gaussian ergodic random process witha mean of zero and a varance of 4 volt2 is measured by a meter which first square and then reads its dc component. The reading will be
78559. The size of the gasket is depends on:
78560. The material with highest ductility:
78561. Which of the following is/are not a property/properties power spectral density function Sx(ω)?
78562. A casual LTI system is described by the difference equation 2y[n] = a y[n - 2] - 2x[n] + βx[n -1] The system is stable only if
78563. An excitation is applied to a system at t = T and the response in zero for -∞ < t < T. This system is
78564. For the wave i = I0 + I1m sin ωt + I3m sin 3ωt, the rms value is
78565. The signumm function written as [sgn(t)] is defined as
78566. Fourier transform of the unit step function (i.e., u(t) = 1 for t ≥ 0 and u(t) = 0 for t < 0) is
78567. Fourier series is applicable for
78568. Fourier transform F(jω) of an arbitrary signal has the property
78569. The units of F(jω) are volt-seconds.
78570. A system with input x[n] and output y[n] is given as y[n] = (sin 5/6 p n) x(n) The system is
78571. If f (t) is an even function, then in th form
78572. The output y(t) of a linear time invariant system is related to its input x(t) by the following equation y(t) = 0.5x(t - td + 1) + x(t - td) + 0.5 x(t - td + 7). The filter transfer function H(ω) of such a system is given by
78573. unit step is a
78574. Assertion (A): In complex frequency s = σ + jω, the terms s and ω are nepar frequency and radin frequency. Reason (R): If ω = 0, the graph of Kest will be a decaying exponential if s <
78575. Final value theroem is for sequence x[n] is
78576. The n state variables can be considered as n components of a state vector.
78577. Following is a reason of distortion in communication system
78578. The state equations are in the form
78579. (SI - A)-1 = adj(sI - A)/det (sI - A)
78580. The eign values of n x n matrix A are the root of the characteristic equation 1λI - AI = 0
78581. 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
78582. A pulse function can be represented as difference of two equal step functions.
78583. The impulse response h[n] of a linear time invariant system is given by h[n] = ∪[n + 3 ] + ∪[n - 2] -2∪[n -7]. The above system is
78584. 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)
78585. If v(t) = 0 for t < 0 and e-a t for t ≥ 0 V(jω) = 1/(a + jω).
78586. The term 'energy spectral density' is associated with
78587. If f(t) = 1, F(jω) = 2p δ(ω).
78588. Short circuit is the dual of open circuit.
78589. Highest value of Autocorrelation of a function 100 cos 50 p t is
78590. The Laplace transform of (tn-1) where n is integer is
78591. 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
78592. The data about p the pull required to lift a weight wby a pulley block isThe linear law p = a + bw is
78593. Average power for signal is
78594. A linear discrete time system has the char. equation z3 - 0.81z = 0, the system is
78595. For a signal x(t) the F.T. is X(f). Then inverse F.T of X(3f + 2) is given by
78596. Energy density function is always
78597. For Ergodic Process
78598. Assertion (A): A non-sinusoidal wave can be expressed in terms of sine waves of different frequencies which are multiples of the frequency of fundamental.Reason (R): If negative half of a complex wave is a reproduction of the positive half, the even harmonics are absent.
78599. A function will have only sine terms if
78600. The discrete time system describes by y(n) = x(n2) is
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