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Modulation increases transmission range. I thought that main reason for modulation is antenna size and sharing of common channel via FDM. I can't get the reason behind the range extension? Can anyone help me in that regard?
An underdamped sensor with a static sensitivity of K=1, undamped natural frequency of omega=1400 rad/s, and damping ratio of zeta=0.5 is used to measure a sinusoidal signal with a frequency of 6 kHz.
A votage pulse of amplitutde 10V begins at 5-sec and lasts for 20 msec,which is short compared with the respponse times and time constants of the system.This impulse si then passed through and integrator.
A 100-μF capacitor is initially charged to 100V. We want 90percent of the internal energy to remain after one minute. What is the limit on the leakage resitance for the capacitor.
A voice frequency massage signal (fmax=B= 4 kHz) is transmitted by three binary systems: PCM (μ = 255), DPCM (α = 10), and DM. The bit rate required is Rb = 120 kbps, and m_p2/(m2 (t))= 2 a) Determine the SNR in output of each systems in dB.
a) Under equilibrium conditions and T>0 K what is the probability of an electron state being occupied if it is located at the Fermi level b) If Ef is positioned at Ec, determine numerically the probability of finding electrons in states Ec-kT
A square wave has a max value of 22 volts, a min value of -46 volts, and a frequency of 44 Hz. Note that it is not centered around the t-axis. what is its rms voltage?
The dielectric constant of LiF is 9.27 at low frequencies and approaches 1.9 at high frequencies. What are the percentage contributions of electronic and ionic polarization to the low-frequency polarization
The probability function of the amount of soft drink in a can is f(x) = 4cx for 11.5
A particular inverting amplifier with nominal gain of -100 V/V uses an imperfect op amp in conjunction with 100-k ohm and 10-M ohm resistors. The output voltage is found to be +9.31 V when measured with the input open and +9.09 V with the input gro..
If you have a purely inductive load with a reactance of 2/377 O connected to the 120Vrms 60 Hz (i.e., f = 377 rad/sec) AC line, what value of capacitor (in Farads) must be put in parallel with it to set the power factor to one
A transistor amplifier has a midband gain of -120, a high cutoff frequency of 36KHz, and a bandwidth of 35.8 KHz. In addition, the actual response is also about -15 dB at f=50Hz. Write the transfer function Av for the amplifier.
A circle, centered at the origin with a radius of 2 units, lies in the xy plane. Determine the unit vector in rectangular components that lies in the xy plane, is tangent to the circle at (√3,1,0), and is in the general direction of increasing val..
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