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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.
Assume the acceptable deviation is +- 5.8%. Thus, a nominal rms voltage of 120 V will range from 113 to 127 V. Suppose the line to line voltage at Customer A is 13.8kV, the load at customerA consumes complex power (1.2+j1.2)x 10^6 W.
The shaft output of a three-phase 60- Hz induction motor is 80 KW. The friction and windage losses are 920 W, the stator core loss is 4300 W and the stator copper loss is 2690 W. The rotor current and rotor resistance referred to stator are respec..
Why very high resistance wire is used is field windind and low resistance wire is used in armature winding in DC shunt machine?
F(a,b,c,d,e) = Σ m(0, 1, 2, 6, 7, 8, 16, 17, 19, 20, 25, 26, 29, 31) + Σ d(3, 5, 18, 27) (a) Find the essential prime implicants of F and indicate the minterm which makes each one essential.
What is the purpose of system calls and how do system calls relate to the Operating system and to the concept of dual-mode operation
a sequential circuit has one input (X) and one output (F). The circuit examines groups of four consecutive inputs and produces an output F=1 if the input sequence 0101 or 1001 occurs. The circuit resets after every four inputs.
A voltage of 100 VDC is applied across a resistor, and the temperature of the resistor is measured. Which of the voltage waveforms shown in the figure, when applied across the resistor, would produce that same temperature - What is the value of t..
A volume charge density of K Coulombs per cubic meter resides uniformly within the material of a long cylindrical shell whose inner radius is 1 m and whose outer radius is 3 m. Find D and E in all regions.
When 2 or more nodes sharing the same communication link transmit at the same time, what will happen What then would be an important problem to address when designing a multipoint direct link network such as an Ethernet
Simulate the proportional fair scheduling algorithm for tc large and compute the performance of each user for a range of y from 1 to 100. You can assume the use of capacity-achieving codes.
The pairwise error probability analysis for the i.i.d. Rayleigh fading channel has led us to the product distance (for time diversity) and generalized product distance (for transmit diversity) code design criteria. Extend this analysis for the i...
A n-type Si wafer is doped with Nd=1e15/cm^3, find the level of acceptor doping we need to convert the wafer from n-type to p-type, with a target hole density p=5e15/cm^3. also ni = 1e10/cm^3
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