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Common radio uses two modulation schemes - they are AM and FM.Explain very briefly what the FM scheme is. How does itdiffer from AM? What are the advantages of each scheme?
A 50-Ohm line is terminated by a (60 +j60) Ohm load. An adjustable shorted shunt stub is placed 0.23 Lambda from the load. What is the smallest standing wave ration that can be achieved between the generator and the line by adjustment of the stub ..
R3 connects to point N in the center with current going upward and R1 is to the left of this at the top and then it down to V1, with the current going from R1 to V1. To the right you have R2 across from point N and then V2 is down from this. The c..
A 10kVA, 200/400V 50Hz single-phase transformer gave the following test results. O/C test: 200V, 1.3A, 120W, on l.v. side. S/C test: 22V, 30A, 200W on h.v. side. (a) Calculate the magnetizing current and the component corresponding to core loss
A transmitter transmits an AM sinal with a carrier frequncy of 1530kHz. When an inexpensive radio receiver (which has a poor selectivity in its RF-stage bandpass filter) is tuned to 1530kHz, the signal is heard loud and clear.
The armature of a simple DC generator is rotating at a speed of 188.5 rad/s. If the armature consists of 3 turns per coil, and a current is flowing in the field coils such that the field coils produce a flux of 0.0333 Wb
Are these signals periodic, find their fundamental period T and their fundamental frequency, otherwise prove that they are non-periodic x(t)= 4 cos(12 t+400) + sin(16 t) x(t)=cos4t +3e-j12t x(t)= ej(10t+p/3) x(t)= ejt +ej3t +sin(6t)
Consider four logical input lines(A,B,C, and D) to represent a fourbit decimal integer. The decimal value of this four bitinteger is to be shown on a seven segment display. You are todesign a function to turn on one segment of the display.
F(A,B,C,D)=Σ(0,2,3,4,6,7,10,11) and G(A,B,C,D)=Σ(0,4,8,9,10,11,12,13) Consider that the functions are to be implemented as part of the same circuit. Show k-maps that reduce the total number of gates needed. How many gates are required
A silicon bar is 2 micro meters long and has 100 micro meters squared cross section. It is doped with 1x10^17 cm^3 arsenic. a) Find the current with 1V applied at room temperature b) How long does it take for an electron to drift from one end of the ..
Three series-connected capacitors, C1, C2 and C3, with capacitances 10uF, 15uF and 27uF respectively, are connected in parallel with a 15uF capacitor and a 150V DC source. Calculate: a) Equivalent capacitance of the circuit
The resistance per 304.8 m of copper wire uses in the extension cord of AWG 14,12,10,8 and 6 are 2.58,1.62, 1.02, 0.64 and 0.41 respectively. Assume a 2% allowable voltage drop. Show all working .
Solar Cell Consider a GaAs PN junction solar cell with the following parameters. Na=10^17 cm^-3, Nd= 2*10^16 cm^-3, Dn=190 cm^2/s, Dp=10 cm^2/s, Tn0=10^-7s, and Tp0=10^-8s.
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