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Q. Afixed-biasmethod is illustrated in Figure. Assuming ICBO to be small compared to IBQ and ICQ, find RB such that the operating point corresponds to ICQ = 14 mA, VCEQ = 7 V, when VCC = 12 V and the silicon BJT has a nominal β = 70. Also determine RC.
Explain electric polarization. Electric polarization : This polarization density is the vector field such expresses the density of permanent or induced electric dipole momen
What is basic requirement of semiconductor laser? Draw its label diagram and explain its working with necessary theory. Write down the applications of semiconductor laser.
Q. (a) An audio amplifier with R i = 10 k, R o = 0, and ¯A(ω), as shown in Figure (a), is used in the circuit shown in Figure with R S = 1 k,R L = 16 , and C = 0.2 µF. Sk
Q. If the line of Problem 15.1.3 is made of copper whose resistivity ρ = 1.72×10 -8 ·m, determine the maximum length that can be used if losses are not to exceed 3 dB when f = 3
List the addressing modes supported by 8051. 1. Register addressing 2. Direct addressing 3. Register indirect addressing 4. Immediate addressing 5.Register addres
Electrical circuits and systems : Electrical systems allow energy to be conveniently delivered from the point of supply to the point of application - e.g. electric railways, ca
1. Why must a modem be used to transmit binary data through a PSTN? (1) Use sketches and additional text to describe the following modulation methods. (a) Amplitude shift key
Compute the Fourier Transform of the following function: f(x) = exp( - x 2 /(2σ 2 )) cos (2πx/k) where σ and k are constants. What is the minimum sampling rate required
Q. Obtain a block diagram of a shift-left/right register using D flip-flops. Q. Design a 4-bit universal shift register. Q. (a) Show a block diagram of an SRFF connected to s
Q. Show that the image frequency for an FM station does not fall in the range of 88.1-107.9 MHz, regardless of the choice of high- or low-side local oscillator.
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