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in natural sampling,an analog signal g(t) is multiplied by aperiodic train of rectangular pulses c(t).pulse repetitionfrequency of this periodic train is fs and theduration of each rectangular pulse is T(with fsT,,1). find thespectrum of the signal s(t) that results from the use of naaturalsampling,assuming that time t=0 corresponds to the midpoint of a rectangular pulse in c(t). show that the original signal m(t) may berecovered exactly from its naturally sampled version,provided that the conditions embodied in the sampling theorem are satisfied.
The sampled signal is passed through an ideal LPF which rejects all frequencies above 8 kHz and has a gain Ts. Les sR(t) be the output of the LPF. Sketch LT[sR(t)], in which FT[] denotes the Fourier Transform, in frequency domain.
A sinusoidal voltage source given by V(t)=100cos100pi*t V is applied across a 50-ohm resistor. (a) Plot v(t) to scale versus time. (b) Find the instantaneous power and plot it to scale versus time. (c) Find the rms value of the voltage source and the..
Find the electric flux density field produced by a uniformly charged infinite cylinder of radius ‘a' using Gauss's law.
A 150-MVA 15/200-kV single-phase power transformer has a 0.018ohm resistance and a 0.075ohm reactance. The magnetizing impedance is j80 per unit. a.) Find the equivalent circuit referred to the low-voltage side of this transformer.
Find the laplace transform of the following functions and the time-shifting property (if needed) of the unilateral Laplacetransform: u(t)-u(t-1)
Let the current int he circuit be is(t) = u(t -1) and the initial voltage in the cap be Vc(0) = -1 volts. PLOT the voltage in the cap Vc(t) for all times. Suppose we double the current is(t) = 2u(t) - u(t -1) but keep same initial condition
The base width of a npn BJT at a temperature of 300K is 4μm. If the time it takes for an electron to diffuse a distance d is t=d2/Dn, where D is the diffusion coefficient.Calculate α and ß for this BJT. Assume typical electron mobilities and the w..
If you have 1024 samples of a discrete-time band-limited signal sampled at a rate of 100MHz. what is the time period between samples. If you take a 2048 point FFT of the sampled signal, what will be the freuqency spacing between the output samples..
(a)compute the magnitude response H(w), and phase response of the filter. (b) determine the input-output relation(difference equation) of the filter in the time domain. (c) compute the output of the system if the input is x(n)=2cos(πn/6 +45o) -∞
A balanceed three-phase load of 15 MA with a lagging load factor of 0.85 is supplied by a 115KV subtransmission line. if the line impedance is 50+j100Ohm per phase, determine the following: (a) The line current of the load.
A balanced Δ connected load of 15 + j9 Ω/phase is being fed by a Δ connected source. Each of the three lines feeding the load from the source has 0.5 + j0.3 Ω impedance. The voltage at the source is 400 VLL.
The can's initial volume at 5 °C is 7.2 × 10-4 m3. The coefficient of volume expansion for aluminum is 69 × 10-6 (C°)-1. When the can and the liquid are heated to 87 °C, 7.0 × 10-6 m3 of liquid spills over.
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