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Two long parallel wires A and B carry steady currents i a and i b , respectively, in the same direction . The distance between the wires is d. The wires exert forces on each other. Are the forces attractive or repulsive? What is the magnitude of the force per unit length on each wire?
Box 1 contains 5 red, 6 white, and 9 blue balls. Box 2 contains 7 red, 8 white, and 4 blue balls. A ball is withdrawn at random from Box 1 and placed in Box 2. Then, a ball is taken at random from Box 2.
A single phase 1750 RPM moter operating at rated power has a power factor of 0.75 lagging. the line voltage is 208 VAC @60 Hz and the line current is 27A. Assuming 83% is a reasonable efficiency for moters of this size
Given that Xi, Yi and Ci represent the addend bits and carry-in at position i, i.e. Stage i, specify and compare the logical expressions for Si and Ci+1, i.e. the sum and carry-out from Stage i, between the one-bit half adder, the one-bit full add..
the discrete-time systems, where y[n] and x[n] are, respectively the output and the imput sequences, determine whether or not the system is (1) linear, (2) causal, (3) stable, and (4) shift-invariant: y[n] = x[n+3];
A 100Ω load needs 10mA to operate correctly. Design a practical power source to provide the needed current. The smallest source resistance you can practically design for is 50Ω, but you can add any other series resistance if you need to.
Sketch the four band diagrams across all MOS structures in equilibrium (VG = 0 V) and sketch the four band diagrams exactly at threshold (VG = VT), as the surface is inverted. Is the threshold voltage VT >0 or
Signal generator's internal impedance is purely resistive andhas an open circuit 3.5 V. When the generator is loaded with 22ohms of resistance, its terminal voltage drops to 2.8 volts. What is the generators output impedance (pure resistance )
Cars arrive at a toll plaza at the rate of 60 cars per hour. There are four booths, each capable of servicing 30 car per hour. Assume a Poisson distribution for arrivals and an exponential distribution for service time.
What is the minimum Eb/Ieff (bit energy over effective noise energy) to yield P(e)
a. A WLAN uses the 1-Mbps IEEE 802.11 infrared standard and the 16-PPM modulation scheme. Compute the period of transmission (time between bits). b. What is the average time between pulses (1 values) and the corresponding average rate of pulse tran..
Four frequencies are applied at the input of a non-linear amplifier. Write down all of the frequency components at the output of the non-linear device. Write down only the first three harmonics.
It is required to design an equivalent analog filter using a digital filter and other appropriate components. Thesampling frequency is fsamp= 20 kHz and the attenuation (α)specifications of the filter are as follows: α > 42 dB for 0 4000 Hz.
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