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Q. What do you mean by Noise?
In any communication system there are usually two dominant factors that limit the performance of the system:
1. Additive noise, generated by electronic devices that are used to filter and amplify the communication signal.
2. Signal attenuation, as the signal travels through a lossy channel. A simple mathematical model of a channel with attenuation and additive noise is shown in Figure. If the transmitted signal is s(t), the received signal is given by
r(t) = αs(t) + n(t)
where α < 1, and n(t) represents an additive random noise process corrupting the transmitted signal. Physically, the additive noise may arise from electronic components and amplifiers at the receiver of the communication system, or from interference encountered in transmission as in the case of radio-signal transmission. The effect of signal attenuation is to reduce the amplitude of the desired signal s(t) and, thus, to render the information-bearing signal more vulnerable to additive noise.
Signal attenuation in many channels can be offset by using amplifiers to boost the signal level during transmission. However, the amplifier also introduces additive noise in the process of amplification, thereby corrupting the signal. The additional noise must also be taken into consideration in the design of the communication system.
Q. Afixed-biasmethod is illustrated in Figure. Assuming ICBO to be small compared to I BQ and I CQ , find RB such that the operating point corresponds to I CQ = 14 mA, V CEQ = 7
a) Diagram FMS layout configurations with labeling. b) what are the basic components of FMS?Discuss in briefly. c) Describe the function of material handling system.
A three-phase transposed line is composed of one ACSR conductor per phase with flat horizontal spacing of 11 meters as shown in Figure (a). The conductors have a diameter of 3.625
Molecular Chain (MIT, Princeton, Colorado) Consider a one-dimensional chain consisting of N molecules which exist in two configurations, α, β, with corresponding energies and
Q. What do you mean by Sign Bit? The sign bit is like simple as it gets 0 denotes a positive number and 1 denote a negative number and flipping the value of this bit flips the
hi PA DS:1234 = AB PA DS:1235 = CD if i typed mov DX,[1234H] WHAT SHOULD I GET IN DX ?
EXplain About R-2-R Ladder D/A Convertor
Q. Explain the significance of the Coupling capacitor and the RE - CE circuit. The function of the coupling capacitor is to isolate the amplifier input circuit from the source.
Three Logic Levels are used and they are High, Low, High impedance state. The high and low are normal logic levels & high impedance state is electrical open circuit conditions. Tri
what is transistor how it works?
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