Q. The z- transform of a systerm is H(z) = z/(z-0.2). If the ROC is |z| < 0.2, then the impluse response of the system is

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Q. ROC of sequence x[n] = (3)ⁿ ∪[n] + (4)ⁿ ∪[- n - 1]

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Q. δ(t - b) is a pulse function.

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Q. A signal x(n) = sin(ω₀n + φ) is the input to a linear time invariant system having a frequency response H(e^(jω)). If the O/P of the system is Ax(n -n₀), then the general form of H(e^(jω)) will be

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Q. A casual system having the transfer function H(s) = 1/(s+2) is excited with 10 ∪(t). The time at which the output reaches 99% of its steady-state value is

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Q. For exponential function e^(-at) the Laplace transform 1/(s - a)

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Q. Consider the sequence x[n] = [- 4 - j5 1 + J2 4]

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Q. A voltage v = 5 + 50 sin ωt + 5 sin 5 ωt is applied to a pure capacitor of capacitance 1 ωF. If f/= 314 rad/sec, current is

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Q. The stationary process has

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Q. If x1(t) = 2 sin πt + cos 4 πt and x2(t) = sin 5 πt + 3 sin 13 πt , then

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Q. An ac network has a power factor of 0.8 leading if the applied wave is of fundamental frequency. If the applied wave contains third and fifth harmonics, the overall power factor will be

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Q. Assertion (A): A sweep circuit operates by virtue of recurring transient phenomenon.

Reason (R): Transients are always undesirable.

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Q. Which one is a non-causal system?

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Q. A linear system is characterized by H(ω) = Be^(-2ω²) the system is physically

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Q. The current in a circuit with 10 Ω resistance is i = 3 + 4 sin (100 t + 45°) + 4 sin (300 t + 60°) A. The rms current and power dissipated are

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Q. Fourier transform pair are

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Q. A voltage wave is i = 100 sin (ωt). Its average value calculated over one half cycle is

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Q. An RLC series circuit has a variable inductance. The value of L for resonance conditions at fundamental frequency is 0.18 H. For resonance conditions at third harmonic frequency the value of inductance is

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Q. which of the following is not correct?

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Q. If function f(t) has an initial value f(0¯) at t = 0¯, the Laplace transform of d[f(t)]/dt is

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