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An experiment consists of tossing a fair coin four times in succession. What are the possible outcomes? Now count up the number of outcomes with three heads. If the outcomes are equally probable, what is the probability of three heads?
A telephone switching board can handle 120 phones. Assuming the following, and determine the outgoing traffic intensity and the number of channels
Calculate the current in the output of the source before and after the installation of the new device and The temperature sensor output is a voltage which is equal to the temperature sensed by the sensor. Design an electric circuit which can get th..
The voltage drops across three resistors in series are measured 10V, 15V, and 25V. If the largest resistor is 47 ohms, what is the value of the smallest resistor?
Design a 4-bit binary incrementer using HALF-ADDERS as building blocks. The circuits implements A+1=S where A and S are 4-bit binary numbrers. The circuit has 4 inputs A3A2A1A0 and 5 outputs : S3S2S1S0 and overflow C4. Draw the circuit diagram wit..
Telephone channels and PCM analysis, The analog to digital converter (ADC) used in a telephone system outputs 8 bit words. The digital words are transmitted as a serial stream to form a PCM voice signal
What is the effect of a frequency difference between the carrier and local oscillator on output quality? Show mathematically.
Determine whether the follow signals are period and for those that are find the fundamental period. F: x(t) = cos(t)u(t) G: x(t) = v(t) + v(-t) where v(t) = cos(t)u(t) I: x[n] = cos((1/5)(pi)(n)) * sin((1/3)(pi)(n))
Suppose that data are stored on a 1.4-Mbyte floppy diskettes that weight 30 g each. Suppose that an airliner carries 10,000 kg of those floppies at a speed of 1000 km/h over a distance of 5000 km. What is the data transmission rate in bits per sec..
Important information about Frequency Divider, Design a frequency divider circuit that will output three pulse frequencies: 25 kHz, 10kHz, and 2.5kHz. Assume that only a 150 kHz CMOS compatible signal is available for the divider input
A pulse compression radar transmits rectangular chirp pulses with bandwidths of 500 MHz. What is the approximate slant-range resolution after Dolph-Chebyshev frequency weighting that results in 30-dB sidelobes
Discuss the trade-offs between fiber optic and satellite communication in terms of costs, signal capacity, signaling method, interference, likelihood of failure and repair issues, multipoint capability, reconfiguration capability, and noise.
A silicon NPN bipolar junction transistor is to be used as an amplifier. What are the required bias conditions for this to occur If the emitter voltage is -3V, pick an acceptable base voltage and an acceptable collector voltage for the transistor ..
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