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1. Discuss the phenomenon of dispersion.
2. Discuss the concept of group velocity with the aid of an example.
3. What is a dispersion diagram? Explain how the phase and group velocities can be determined from a dispersion diagram.
Determine the periods and find exponential fourier series coeffecients of functions. A.) f(t) = 2(cost)(cos2t) B.) g(t) = 3 + 2e^-j2t + 2e^j2t + 2cos4t C.) h(t) = 4
There is a device that requires 2 Volts to run. The internal resistance of the device is 6^6. There are two batteries that canbe used to run the device. One puts out 6Volts and the other putsout 3Volts and each puts out 1 Amp.
Note that your program should check to see if the desired bit-error probability is possible for the given JSR and SNR.
Determine the power levels in dBm and in dBW.
A square wave has the following properties: Period(T)=8mS, Vmax= 25V, Vmin=-96V, Duty cycle=7%. The voltage of the wave falls across a resistor of Rload=74Ωs.
Design an EKG amplifier interface to a 6811/6812. The biopotential is a ±5-mV signal measured between the left and right arms using silver-silver chloride electrodes. A third electrode is placed in the right leg and is used as a reference.
The load resistances of op amps range from a few Ohms to a couple of hundred Ohms. What would happen if the load resistance is very low and approaches that of the output resistance of the op amp
A long cylindrical wire has a radius equal to 2 cm and carries a current of 80 A uniformly distruibuted over its cross-sectional area. Find the magnetic energy per unit length within the wire.
A de servomotor drives the .r-axis of an NC milling machine table, the motor is coupled directly to the table lead screw, whose pitch = 6.25 mm.
We have v1(t)=10cos(wt+30degrees). The current i1(t) has an rms value of 5A and leads v1(t) by 20s. (The current and the voltage have the same frequency) Draw a phasor diagram showing the phasors.
DeSign a Miller integrator with a time constant of 0.1 s and an mput reSistance of 100 kfl. A dc voltage of - I volt IS applied at the input at time 0, at which moment tI" = -10 V. How long does it take the output to reach 0 V') + I 0 V
Given the narrow audio bandwidth of a telephone transmission facility, a nominal SNR of 56DB and a distortion level of
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