78401. The z- transform of a systerm is If the ROC is |z| < 0.2, then the impluse response of the system is
78402. ROC of sequence x[n] = (3)n ∪[n] + (4)n ∪[- n - 1]
78403. δ(t - b) is a pulse function.
78404. A signal is sampled at Nyquist rate fs = 2f0. The function can be recovered from its samples only. If it is a
78405. A voltage wave is v = 50 sin ωt. Its average value calculated over full one cycle is
78406. If f1 (t) and f2 (f) are two functions of time and a and b are constants, then
78407. Fourier transform of f(t) =
78408. A voltage wave is i = 100 sin (ωt). Its average value calculated over one half cycle is
78409. In the given figure 15.5 show a discrete time system consisting of a unit delay system, a multiplier and a summer, such that y(k) = x(k - 1) + 0.5 x(k). This system
78410. 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
78411. 350 litres refrigerator---------compressor is used
78412. If function f(t) has an initial value f(0-) at t = 0-, the Laplace transform of is
78413. A voltage v = 5 + 50 sin ωt/ + 5 sin 5 &omegat is applied to a pure capacitor of capacitance 1 ωF. If f/= 314 rad/sec, current is
78414. The stationary process has
78415. If x1(t) = 2 sin p t + cos 4 p t and x2(t) = sin 5 p t + 3 sin 13 p t then
78416. 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
78417. Assertion (A): A sweep circuit operates by virtue of recurring transient phenomenon.Reason (R): Transients are always undesirable.
78418. If f(t) = - f(- t) satisfies Drichlet conditions, then f(t) can be expanded in Fourier series containing
78419. The joint probability function of two discrete random variable X and Y is given by x = 0, 2, y = 2, 3 variance σ2 will be[Hint: σ2 = E(X2) - μ2 ⇒ E(X2) - (E(X))2]
78420. The Laplace transform of f(t) is
78421. If f(t) is in volts, then F(jω) is in
78422. A voltage V(t) which is a Gaussian ergodic random process with a mean of zero and a variance of 4 volt2 is measured by a true rms meter. The reading will be
78423. Assertion (A): If , the final value of i(t) = 10Reason (R): If , the initial value i(t) = 2
78424. An ac circuit has an impedance of (3 + j6) ohm for fundamental. The impedance for fifth harmonic is
78425. Which of following is recursive system?
78426. In terms of signum function sgn(t), unit step function u(t) =
78427. Choose correct option
78428. If I(s) = , fnal value of i(t) is
78429. If sequence y(n) = x(-n) then it is
78430. In the given figure 15.6 shows a series, R - C circuit fed by a current source i(t). There is an initial voltage v0. across the capacitor. The system
78431. The function δ(t - b) is
78432. An ac network has a power factor of 0.8 lagging for fundamental frequency. If the applied voltage contains thrid and fifth harmonics, the overall power factor will be
78433. what will be sampling rate to aviod aliasing for the signal m(t) = 10 cos 100 p t?
78434. If Laplace transform of f(t) is F(s), then =
78435. Choose the function f(t), - ∞ < t < + ∞, for which a Fourier series cannot be defined
78436. Assertion (A): The number ∈ such that the probability that an error is between -∈ and + ∈ is 1 is called probable error of single obserevation. Reason (R): The standard deviation is the arms value of the deviation from the arithmetic mean.
78437. If a function has only cosine terms, it must satisfy the equation
78438. If v(t) is a time varying voltage, is
78439. If otherwise find E(X)
78440. The data of speed of train V and resistance to motion R isThe law R = a + bV2 is of the form
78441. If then the sequence x[n] is
78442. A 1 kHz sinusoidal signal is ideally sampled at 1500 samples/sec and the sampled signal is passed through an ideal low pass filter with cut off frequency 800 Hz. The output signal has the frequency.
78443. If autocorrelation sequence is Rc(n) = then what will be energy of sequence?
78444. Fourier transform of an external exponential ejW0t
78445. If i = 10 + 12 cos 500t - 3.5 sin 500 t, then in amplitude phasse form i =
78446. The real part of complex frequency s corresponds to oscillations.
78447. A unit step function is used to represent the closing a switch in a constant voltage system.
78448. A voltage v = 100 sin ωt + 10 sin 5 ωt is applied to a pure capacitor having capacitance of 1 μF. If ω = 314 rad/sec, the current through the capacitor is
78449. If then system is
78450. A pulse function having magnitude E and duration from t = 0 to t = a can be represented as
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use
Powered By:Omega Web Solutions