Q. 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

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Q. L [f(t - a)] = F(jω) e^(-jωa)

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Q. The integral of k δ(t) is

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Q. The integral of unit step function is a ramp of slope unity.

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Q. Which one of the systems described by the following I/P - O/P relations is time invariant

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Q. Fourier transform is defined for

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Q. F.T. of continuous non-periodic signal is

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Q. Inverse Fourier transform of '1' is

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Q. Pick out the odd one

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Q. X and Y are two random variables and Z = X + Y . Letmz, mz, mx, my represent mean of Z, X and Y. Then

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Q. Energy spectral density is equal to for a signal g(t)

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Q. State space analysis is applicable to

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Q. For Ergodic Process

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Q. 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.

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Q. A function will have only sine terms if

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Q. 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

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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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