78351. The Fourier series representation of a periodic current (2 + 62 cos ωt +48 sin 2ωt) A. The effective value is
78352. If , then x(n) series has
78353. Assertion (A): Intergal of a unit step function is a ramp of slope unity.Reason (R): If
78354. If then, f(0+) and f(∞) are given by
78355. The signal define by the equations u(t - a) = 0 for t < a and u(t - a) = 1 for t ≥ a is
78356. For the system in the given figure
78357. Laplace transform of eat cos (a t) is
78358. The impulse response of discrete time system is x[n] = (4)n ∪[3 - n], the system is
78359. The value of the in + ve sense is
78360. The inverse Laplace transform of is
78361. A voltage wave v = 10 + 20 sin ωt + 7.5 sin 3 ω(t) is applied to a series combination of two elements. The current is i = 5 sin (ωt + 20°) + 1.5 sin (3ωt + 10°). The elements are
78362. If F(t) = δ(t - a), F(s)=
78363. The property is not valid for basic singularity function is
78364. Magnitude Plot of a Composite signal x(t) = e2jt + e3jt is
78365. Specify the thickness of a sheet metal having 18 SWG (Standard Wire Guage)
78366. F.T. of normalized Gaussian function e-p t2 is
78367. If F(s) is the Laplace transform of f(t) then Laplace transform of
78368. Assertion (A): L[e-at f(t)] = F(s + a) Reason (R): In use of Laplace transform method, initial conditions may be neglected.
78369. An ac sinusoidal wave has an rms value of 10 V. The peak to peak value is
78370. A complex wave is 5 + 5 sin ωt. Its rms value is
78371. Let be the Fourier transform of y(n), then y(ej0) is
78372. The Laplace transform of a vlotage across a capacitor is Vc (s) = . If capacitor is 0.5 F, The current through capacitor at t = 0+ is
78373. The value of Integral (t2 + 2) δ(t - 3)dt is equal to
78374. The z transform of sequence x[n] = {2, 4, 3, 2}
78375. Assertion (A): For the function shown in figureLaplace transform is Reason (R):
78376. The energy of constant amplitude complex valued exponential sequence is ...
78377. The value of Integral δ(t) sin t dt is equal to
78378. Assertion (A): If Reason (R):
78379. A rectangular pulse train s(t) is shown in figure is convolved with the signal cos2(4p x 103t). The convolved signal will be a
78380. Transfer function of a linear system is 200 e-j10ω The system is a
78381. which one is discrete time periodic signal?
78382. Frequency domain of a periodic triangular function is a
78383. The inverse Laplace transform of
78384. The effective value of the waveform in the given figure is
78385. Which one of following is a static system?
78386. If i(t) is a time varying current, is
78387. The size of ½” copper tube is equal to:
78388. The signal is
78389. In the state equation x = AX + Bu is a n x m matrix.
78390. If the poles of H(z) are at
78391. Which one is a non-causal system?
78392. A linear system is characterized by H(ω) = Be-2ω2 the system is physically
78393. 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
78394. Fourier transform pair are
78395. A signal x(n) = sin(ω0n + φ) is the input to a linear time invariant system having a frequency response H(ejω) If the O/P of the system is Ax(n -n0), then the general form of H(ejω) will be
78396. Fourier transform of -jt f(t) is
78397. A casual system having the transfer function is excited with 10 ∪(t). The time at which the output reaches 99% of its steady-state value is
78398. For exponential function e-at the Laplace transform 1/(s - a)
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