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Discuss why it is that for a discharging capacitor, the discharge current is in the direction opposite from the charging current.Explain why capacitive reactance is measured in ohms. Also, state two differences between capacitance and capacitive reactance.
How many voice channels are carried by a E1 transmission given 8 kHz sampling and 8 bit words? Why is an end of frame marker always required in a digital telephony system?
A charged 100- picoFarad capacitor has initial voltage across it of 10 V. A 100 kohm resistor is suddenly connected across the capacitor (at t=0) to discharge it. What is the magnitude of the instantaneous current at 20 usec
The tuning capacitor of a Wien bridge oscillator is 100 pF and the frequency is 5 kHz. To what value of capacitance pF should the capacitor be changed to if the frequency is to be changed to 2 kHz
design a regulated poewr supply with these specs Output a dc voltage of 10 V Load Variation: 0.3 -10000ohms Ripple Factor: less 0.1% for 2000ohms load
1) Find the transient and steady-state responses of the system using frequency domain methods. 2) Find the forced and natural responses of the system using frequency domain methods. 3)Find the 0+ conditions for the system's step response and impulse ..
Three identical constant pitch thin helical coils (having a pitch 3mm, axial length 450mm and inner diameter 20mm) are positioned along a common axis. The axial distance between the first and the second is 55mm
Draw a relay construction diagram and briefly explain the operation of a relay.
Write a MATLAB script to implement the linear congruential algorithm to generate 5000 pseudo-random variates in the interval (0,1). Use the following parameters: seed=17; A=1103515245; M=2147483648; C=12345.
The exponential Fourier series coecients for a signal x(t) are: ak= { 1.57 when k=0, 0 when k is even and k doesnt equal 0, ((-1)(k-1)/2)/k when k is odd} Determine the following: (a) Plot the spectrum of the Fourier series.
(1) What does the words leads and lag represent in factor In waveform (2) How would you change the power factor if you needed to
The output response for a system is given as Vo(t) = A(1-e^-at)sin(ωt). Is this a proper representation for an output response given that it contains a sinusoidal term? Fully explain your answer.
The power amplifier for a car stereo amplifier has a rated output power of 750 watts when operating at room temperature. Assuming a Class B amplifier with the maximum theoretical efficiency is used,
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