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Referring to (A.37) and the accompanying discussion, suppose that two calibrated noise sources have effective temperatures of 600 K and 300 K.
a. Obtain the noise temperature of an amplifier with these two noise sources used as inputs if the difference in attenuator settings to get the same power meter reading at the amplifier's output is 1 dB, 1.5 dB, or 2 dB.
b. Obtain the corresponding noise figures.
a. What are the cyclic frequency (in Hz) and period of this signal b. Express this signal in the Quadrature and Sine/Angle forms. c. Express this signal in terms of complex exponentials (hint - use Euler's identity equation).
A plate of 2-mm thickness is bent as shown and then used as a beam. For a vertical shear of 5 kN, determine the shearing stress at the five points indicated and sketch the shear flow in the cross section.
What are the points may be noted for understanding the division of Three Phase Current in a 3-Phase System ?
A BJT differential amplifier is biased to have 500uA dc current in each device, β = 100, RC1 = RC2 = 1Kohm, and RE = 3Kohm. Assume ro = ∞. When operating in balanced in, balanced out mode what is the maximum allowable resistor tolerance
If the amplifier is fed with a signal source having a resistance of 10 kohm, and load resistance Rl = 10 kohm is connected to the output terminal, find the resulting Av, and Gv. If the peak voltage of the sine wave appearing between base and emitt..
Convert both numbers to 4-bit values, take the 2's complement of 9 and add them. What happens to the carry out How does that compare with what happens when you subtract 8 from 9
The signal m(t)=6sin(2*pi*t) volts is transmitted using 4-bit binary PCM system. The quantizer is of the midriser type, with a step size of 1v
Suppose you have a line charge and a point charge in space. A point charge of 16nC is located at Q(2,3,5) in free space, and a unifor line charge of 5nC/m is at the intersection of the planes x=2 and y=4. If the potential at the origin is 100V, fi..
Calculate the efficiency of transmission at the IP level. Assume no options for the header and no errors. Calculate the efficiency of transmission at the data link layer. Assume no options for IP header and Ethernet-II format are used at the d..
A new project has the following predicted profits. The initial investment is $3,000,000. Yr Revenue 1 $200,000 2 $400,000 3 $600,000 4 $800,000 5 $1,200,000 6 $1,200,000 7 $1,400,000 8 $1,600,000
one question: During each cycle, the velocity v (in mm/s) of a piston is v = 6t - 6t^2, where t is the time (in sec). Find the displacement s of the piston after 0.75 sec if the initial displacement is zero.
b. To maintain one per unit voltage at rated load, find the per unit generator voltage needed. c. Find load current in amps, current through the transmission line in amps, generator current in amps, and the genertor voltage in volts.
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