Q. If f(t) = sgn(t), F(jω)

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Q. If xk = 0 for k < 0 and = 2^k for k ≥ 0 X(z) = z/(z -2).

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Q. Assertion (A): If an event A can happen in m ways and another event B can happen in n ways, both can happen in mn ways.

Reason (R): Two events are mutually exclusive if happening of either precludes the occurrence of other.

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Q. A dice is tossed. The probability that either 1 or 2 will appear is

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Q. The signal m(t) = 10 cos 100 πt is sampled at the rate of Fs = 75 Hz, then determine signal after sampling.

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Q. The tree selected for the formation of state equations contains

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Q. Consider the following statements

1. If ensemble and time averages of a random process are identical, the process is ergodic.
2. If ensemble and time average of a random process are not identical, the process is ergodic.
3. An ergodic process is stationary.
4. A stationary process is necessarily ergodic.

Which of the above statements are correct?

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Q. (sI - A)¯¹ is equal to

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Q. For a Gaussian process, auto-correlation sequence also implies that

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Q. Which one of the following is correct? Energy of a power signal is

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Q. Choose the correct option

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Q. For matrix A, A¯¹ A = 1

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Q. If xk = 2^k for k ≤ 0 and = 0 for k > 0 X(z) = 2/(2 - z).

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Q. In plotting line spectrum

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Q. Assertion (A): Transient periods are of short duration but can result in dangerously high voltages and currents.

Reason (R): Circuit equations in transient analysis are integral differential equations.

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Q. Assertion (A): The function ke^(st) with both σ and ω positive and s > 0 depicts a sinusoid whose amplitude increases with time.

Reason (R): If σ = 0, ke^(st) becomes a sinusoid.

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Q. The peak factor is

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Q. Assertion (A): A half cycle of sine wave can be expressed as sum of sine wave and another sine wave shifted by T/2 where T is the time period.

Reason (R): The function u(t - t₀) - u(t - t₀ - T) is a gate function occuring at t = t₀ and of duration T.

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Q. The function δ' (t-b) is

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Q. The function sinc x is equal to

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