Problem 7.2 Consider the signal x(t) = sinc(6t) sinc(4t). (a) Sketch the spectrum Ŷ (ƒ). (b) Consider the impulse train sampled signal xs(t) = Σ x(nT)&(t - nT) n=-∞ where T = ½. Sketch the spectrum of Ŷs(f). (c) The sampled signal x,(t) is passed through an LPF HLPF(ƒ) = (f) to obtain the signal x,(t). Sketch the spectrum Ŷ, (ƒ) and give an explicit expression for the time domain signal x(t). Is it the same as the original signal x(t) (up to scale)? (d) Repeat (b) and (c) for T = 1 12° (e) What is the maximum value of T for which x(t) = x(t) (up to scale)?

1) How you will convert sin function to cosine? List trigonometric any three properties associated with these functions. 2) Briefly describe application of impulse function and impulse train.                                                             3) How you relate phase shift and time shift of a signal? 4) List the few important Matlab function names to simulate various waveforms.

This is a practice question from my Introduction to Circuits course. I am having a hard time finding the poles for this. When I implement the circuit in LT Spice, I can see that the cutoff frequency is somewhere around 16kHz, but I can't figure out how to come up with that value mathematically. It is underdamped; so, will have imaginary components, but I'm lost as to how to find them or what to do with them or how to come up with the correct cutoff frequency to match LT Spice. Thank you for your assistance.

7. In DC analysis all capacitors are replaced by a short circuit equivalent and in AC as an open circuit. Select one:TrueFalse   8. En el análisis AC del BJT todas las fuentes de cd se hacen igual a cero y las reemplaza una conexión de cortocircuito a tierra.   Seleccione una: Verdadero Falso   9. The superposition theorem is applicable to the analysis and design of the dc and ac components of a BJT network, allowing the analysis of the system's dc and ac responses to be separated. Select one:TrueFalse   10. An equivalent model is a combination of appropriately selected circuit elements that accurately simulates the real behavior of a semiconductor device in any operating condition. Select one:TrueFalse

Find the transient current (a general solution) in the RLC-circuit in the figure below for the given data. R = 6 N, L = 0.2 H, C = 0.025 F, E = 190 sin (10t) V R E(t) = E, sinot Write arbitrary constants as C1 and C2. ll

Q4. Consider the circuit shown in Figure P7.30. The time constant associated with Cc2 is a factor of 100 larger than the time constant associated with Cc1. (a) Determine CCi such that the -3 dB frequency associated with this capacitor is 20 Hz. (b) Find Cc2. Vcc=5 V R = 1.2 k2 Rs = 300 2 Ccz R2 = 1.2 k2 RE= 50 2 R= 10 2 Figure P7.30

The spectrum associated with Step signal 7 The spectrum associated with an impulse signal 10 Choice aoption The spectrum associated with an exponential signal The spectrum associated with rectangular signal

SOLVE USING MATLAB PLEASE!

1. Laboratory Task Descriptions Verification of series RLC transient analysis computations For this laboratory exercise, students will construct an underdamped series RLC circuit, then make voltage and current measurements to investigate the validity of transient circuit analysis techniques for series RLC circuits. Measurements will be obtained using the oscilloscopes available in the laboratory. The signal generator will be used to apply a 0[V] to 10[V], 50[%] duty cycle square wave across the RLC circuit to establish the circuit response. The required square wave signal frequency for the RLC circuit will be computed below in part 2b of the prelab work. Note: To receive credit for the following prelab computations, all required equations for the prelab below must be generated in variable form before substituting component values. Generation of the equations in variable form is required to permit substituting the actual measured component values into the solution equations. This…

What is output signal when a signal x(t)=cos(2*pi*40*t) is sampled with a sampling frequency of 20HZ? a) cos(pi*n) b) cos(2*pi*n) c) cos(4*pi*n) d) cos(8*pi*n)