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The so-called Si-function is the pulse response of an ideal "rectangular" filter. It is also a practically ideal band-limited LF-signal which contains all the amplitudes up to cut-off frequency at (virtually) the same strength.
(a) Switch on DASYLab and select the circuit in Illustration 48. A Si-function is produced and its spectrum displayed. Using the formula component change the form of the Si-function and the effect on the spectrum by experimenting.
(b) Make sure that the ripple content of the Si-function is identical with the highest frequency of the spectrum.
(c) You wish to measure the properties of a high-quality low-pass filter but you only have a normal oscilloscope to observe the Si-like pulse response. How can you deduce the features of the filter from this?
An inductor has a negligible resistance and an inductance of 200 mH and is connected in series with a 1 k resistor to a 24 V, d.c. supply. Determine the time constant of the circuit and the steady-state value of the current flowing in the circuit.
The quantization step size or resolution, ?, if the signal range is 5 volts;
For the system described by the following equations, with the input x(t) and output y(t), determine which are invertible systems and which are noninvertible. For the invertible systems, find the input-output relationships of the inverse system.
A player win $1 dollar if he throws two heads in succession,otherwise he loses two quarters. If the game is reported 50times, what is the probability that the net gain or loss exceeds $1 dollar
The transfer function of a discrete time system is given by H H(z) = z/(z-0.5) The system has a sampling rate of 100 Hz. Calculate the frequency response of the system at 25 Hz input frequency as a complex number in both rectangular and polar f..
Plot the values of Im and E2 superimposed on the log-log plot shown on a previous page (134) in the lecture notes. Is the 600:5 CT in saturation or not?
Find the type and impedance in ohms of the series circuit elements that must be in the closed container of given figure for the indicated voltages and currents to exist at the input terminals.
If the armature resistance is 0.3 ? per phase, and the generator supplies 60 A to a purely resistive Y-connected load of 3 ? per phase at this field current setting, determine the voltage regulation under these load conditions.
A lower leg being exercised. It has a 49-N weight attached to the foot and is extended at an angle with respect to the vertical. Consider a rotational axis at the knee, as indicated. (a) When = 87°, find the magnitude of the torque that the weight..
Draw the flowchart of a program controlling the supply valve to a water tank. The valve should be energized when the water level falls to 1.0 m and should be de-energized when the water level rises to 1.5 m.
Voltage drop across R6 = 12 ohm resistor
1) Which has greater efficiency DC Machine operating as MOTOR or GENERATOR 2) What happens when an AC supply is given to a DC Machine
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