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electrical engineering

Questions and Answers of Electrical Engineering

A single loop second order circuit is described by the following differential equation What is the correct form of the total (natural plus forced) response?
If all initial conditions are zero in the network in fig, find transfer function Vo(s)/Vs(s) and determine the type of damping exhibited by the network.
The initial conditions in the circuit in fig are zeros. Find the transfer function Io(s)/Is(s) and determine the type of damping exhibited by the circuit.
Find the exponential Fourier series for the signal shown.
Find the exponential Fourier series for the periodic pulse train shown.
Find the exponential Fourier series for the periodic signal shown.
Compute the exponential Fourier series for the waveform that is the sum of the two waveforms shown by computing the exponential Fourier series of the two waveforms and adding them.
Find the exponential Fourier series for the signal shown. Discuss.
Given the waveform shown, determine the type of symmetry that exists if the origin is selected at: (a) l1 and (b) l2.
What type of symmetry is exhibited by the two waveforms shown?
Find the trigonometric Fourier series coefficients for the waveform shown.
Find the trigonometric Fourier series coefficients for the waveform shown. Discuss.
Find the trigonometric Fourier series coefficients for the waveform shown. Discuss in detail.
Find the trigonometric Fourier series coefficients for the waveform shown. Discuss briefly.
Find the trigonometric Fourier series for the waveform shown.
Find the trigonometric Fourier series for the waveform shown. Discuss.
Find the trigonometric Fourier series for the waveform shown. Discuss in detail.
Find the trigonometric Fourier series coefficients for the waveform shown. Briefly.
Find the trigonometric Fourier series coefficients for the waveform shown. Explain.
Derive the trigonometric Fourier series for the function shown.
Derive the trigonometric Fourier series for the function v(t) = A|sin t| as shown.
Derive the trigonometric Fourier series for the waveform shown.
Use PSpice to determine the Fourier series of the waveform shown in the form.
Use Spice to determine the Fourier series of the waveform shown in the form. Vs (t) = a0 + Σ bn sin (nω0t+ θn)
Use PSpice to determine the Fourier series of the waveform shown in the form Vs (t) = a0 + Σ bn sin (nω0t+ θn)
The discrete line spectrum for a periodic function f(t) is shown. Determine the expression for f(t).
The amplitude and phase spectra for a periodic function v(t) that has only a small number of terms is shown. Determine the expression for v(t) if T0 = 0.1 s.
Plot the first four terms of the amplitude and phase spectra for the signal f (t) = Σ -2/nπ sin (nπ/2)cos (nω0t) +6/nπ sin (nω0t)
Determine the steady-state response of the current io(t) in the circuit shown if the input voltage is described by the waveform shown in Problem 14.8.
If the input voltage in Problem 14.25 is Vs (t) = 1- 2/π Σ 1/n sin (0.2πnt)V Find the expression for the steady-state current io (t).
Determine the first three terms of the steady-state voltage vo¬ (t) if the input voltage is a periodic signal of the form Vs (t) = ½ + Σ 1/nπ (cos(nπ - 1))sin (nt)V
The current Is (t) shown is applied to the circuit shown. Determine the expression for the steady-state current io (t) using the first four harmonics.
Find the average power absorbed by the network shown if V(t) = 50 + 25 cos(377t + 45) + 24 cos(754t - 60) V.
Find the average power absorbed by the 12-y resistor in the network of Problem 14.29 if V (t) = 50 = 25 cos(377t - 45) + 12.5 cos(754t + 45) V.
Determine the Fourier transform of the waveform shown.
Derive the Fourier transform for the following functions: (a) f (t) = e¬¬-2t cos 4tu (t). (b) f (t) = e-2t sin 4tu (t).
Show that F [f1 (t) f2 (t)] = 1- 2/π ſ F1 (x) F2 (ω - x) dx
Find the Fourier transform of the function f (t) = e-a|t|.
Find the Fourier transform of the function f (t0 = 12e-2|t| cos 4t.
Determine the output signal vo(t) of a network with input signal vi(t) = 3e-tu(t) and network impulse response h(t) = e-2t u(t). Assume that all initial conditions are zero.
The input signal to a network is vi (t) = e-3t u (t). The transfer function of the network is H (j) = 1/(j + 4). Find the output of the network vo (t) if the initial conditions are
The input signal for the network shown is vi(t) = 10e-5t (t) V. Determine the total 1- energy content of the output vo (t).
Use the Fourier transform to find i (t) in the network shown if vi (t) = 2e-t u (t).
Determine the voltage vo(t) in the circuit shown, using the Fourier transform if vi (t) = 2e-4t u(t).
Compute the 1- energy content of the signal vo (t) in Problem 14.38 in the frequency range from  = 2 to  = 4 rad/s.
Determine the 1-y energy content of the signal vo (t) in Problem 14.38 in the frequency range from 0 to 1 rad/s.
1Given the waveform shown, determine which of the trigonometric Fourier coefficients have zero value, which have nonzero value and why.
Given the waveform shown, describe the type of symmetry and its impact on the trigonometric coefficients in the Fourier series, i.e. a0, an, bn.
Given the two networks shown, find the Y parameters for the circuit in (a) and Z parameters for the circuit in (b).
Find the Y parameters for the two-port network shown .
Find the Y parameters for the two-port network shown.
If a 12-A source is connected at the input port of the network shown, find the current in a 4-ohm load resistor.
Find the Y parameters for the two-port network shown. Discuss.
Determine the Y parameters for the network shown.
Determine the admittance parameters for the network shown.
Find the Z parameters of the two port network shown.
Find Z parameters of the network in Problem 15.5.
Determine the Z parameters for the two port network shown.
Find the Z parameters for the two port shown. Determine the voltage gain of the entire circuit with a 4k-ohm load attached.
Find the Z parameters for the two port network shown.
Find the voltage gain of the two port network in Problem 15.12 with a 12k-ohm load.
Find the input impendence of the network in Problem 15.12
Find the Z parameters of the two port network shown. Discuss.
Determine the Z parameters of the two port network shown.
Compute the hybrid parameters for the network shown.
Consider the network shown. The two port network is a hybrid model of a basic transistor. Determine the voltage gain of entire network, V2/Vs, if a source Vs with internal resistance R1 is applied at
Find the hybrid parameters for the network shown.
Find the ABCD parameters for the networks shown
Find the ABCD parameters for the networks shown Discuss.
Find the transmission parameters for the network shown.
Find the transmission parameters for the network shown. Discuss.
Find ABCD parameters for the network shown
Determine the transmission parameters for the network shown.
Find the transmission parameters for the circuit shown.
Find the transmission parameters for two port network and then find I0 using the terminal conditions.
Following are the hybrid parameters for a network
If the Y parameters for a network are known to be
Find the Z parameters in terms of the ABCD parameters
Find the Hybrid parameters in terms of the Impendence parameters
Find the Y parameters of the network shown, by considering the network to be a parallel connection of two port networks.
Find the Y parameters of the two port shown. Find the input admittance of the network when the capacitor is connected to the output port
Find the Y parameters for the network shown.
Determine the Y parameters for the network shown.
Find the Z parameters of the network shown by considering the circuit to be a series connection of two port networks.
Find the transmission parameters of the network shown by considering the circuit to be a cascade connection of three two port networks.
Find the ABCD parameters for the circuit shown.
Find the transmission parameters for the two port network shown
Find the transmission parameters of the two port and then use the terminal conditions to find I.
A two port network is know to have the following parameters Y11 = 1/14s Y12 = Y21=-1/21s Y22 = 1/7s
Find the Thevenin equivalent circuit at the output terminals of the network. of Problem 15FE1.
A 2-kHz sound wave traveling in the x-direction in air was observed to have a differential pressure p(x, t) = 10N/m2 at x = 0 and t = 50 μs. If the reference phase of p (x, t) is 36o, find a
For the pressure wave described in Example 1-1, plotp (x, t) versus x at t = 0(x, t ) versus t at x = 0Be sure to use appropriate scales for x and t so that each of your plots covers at least two
A harmonic wave traveling along a string is generated by an oscillator that completes 180 vibrations per minute. If it is observed that a given crest, or maximum, travels 300 cm in 10 s, what is the
Two waves, y1 (t) and y2 (t), have identical amplitudes and oscillate at the same frequency, but y2 (t) leads y1 (t) by a phase angle of 60o. If y1 (t) = 4cos (2π x 103t) write down the
The height of an ocean wave is described by the function y(x, t) = 1.5 sin (0.5t -0.6x) (m). Determine the phase velocity and the wavelength and then sketch y(x, t) at t = 2s over the range from x =
A wave traveling along a string in the + x-direction is given by y1 (x, t) = A cos (wt – Bx), where x = 0 is the end of the string, which is tied rigidly to a wall, as shown in Fig. 1-21 (P1.6).
Two waves on string are given by the following functions: y1(x, t) = 4cos (20t – 30x) (cm), y2(x, t) = - 4cos (20t + 30x) (cm), Where x is in centimeters the waves are said to interfere
Give expressions for y(x, t) for a sinusoidal wave traveling along a string in the negative x-direction, given that y max = 40cm, λ = 30 cm, f = 10 Hz, and (a) y(x, o) = 0 at x =o, (b) y(x,
An oscillator that generates a sinusoidal wave on a string completes 20 vibrations in 50 s. The wave peak is observed to travel a distance of 2.8 m along the string in 50 s. What is the wavelength?
The vertical displacement of a string is given by the harmonic function: y(x, t) = 6cos (16πt - 20πx) (m), where x is the horizontal distance along the string in meters. Suppose a tiny

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