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Determine and compare the intrinsic impedance, attenuation constant, and skin depth of copper [σcu =5.80 × 10^7 (S/m)], silver[σag=6.15 × 10^7 (S/m)], and brass[σbr=1.59
with karnaugh maps, find a minimal sum-of-products expressionfor each of the following logic functions. Indicate thedistinguished 1-cells in each map a) F = ΣA,B,C,D (1,4, 5, 6,11, 12,13,14,15)
the binary exponential back-off algorithm is defined by IEE802thus:" The delay is an integral multiple of slot time. The numberof slot times to delay before the nth retransmission attempt ischosen a
Your boss asks you to contruct a temperature sensorfor measuring the ambient temp outside (-30degreee celcius<= T<= 40 deg. c). You decide to base operation on the change inresistance accociat
(a) An average hole velocity of 10^3 cm/sec results when 2 v is appliedaccross a 1 cm-long semiconductor bar. What is the mobilityof the bar (b) name the two dominant carrier scattering mechanisms i
A 400-kV transmission line has a hot-weather power rating of1400 MVA. If the transmission line is operating in cold weather, itis rated for 2200 MVA (at 400 kV). The transmission line is undercold w
For a coaxial line with inner conductor radius a and outerc onductor radius b, V = V0 at ρ = a and V = 0 atρ = b. Find the potential distribution by solving Laplace'sequation. Also find capa
Determine the maximum and minimum values of the magnitude response. How many peaks occur in the magnitude response in the frequency range from zero to 2π. What are the locations of the peak and d
The equation y[n] - p y[n-1] = x[n] can be used to describe the value y[n] of a new investment by setting p = 1 + r/100 where r is the interest rate per period, expressed in percent.
Two components of linear distortion produced by transmitting asignal through an LTI (linear time invariant) system: Amplitude distortion - the frequency components of the input signalare transmitted
(a) If E=Exax andH=Hyay, begin with Maxwell's equations and determine the second order partial differential equation thatEx must satisfy. (b) Show that Ex=E0 cos (ωt-βz) is a solution of t
A 10kW, 230V, 50 Hz, three-phase induction motor has full-loadefficiency of 86%, and power factor of 88%. It is supplied by a three-core cable 100mlong, having conductors of cross sectional area 16
Two infinite sheets of charge lie parallel to each other, separatedby a distance d. The upper and lower sheets have surfacecharge densities ρsa and ρsb[C/m2], respectively. find the voltage
An NMOS operating in triode region withVds=0.1V conducts 60μA for Vgs=2V.The device conducts 160μA forVgs=4V. Calculate Vt. If Kn'=25μA/V2 , what is the device W/L What current would flow f
Vgs is the switchcontrol voltage. Find the switch on-resistance Rds and the voltageVds obtained when Vgs=5V and Id=1mA. If μp=0.5μn what must bethe PMOS device W/L to provide the same NMOS on-
a square wave of 1000Hz is introduced into an ideal band passfilter (bandwidth = 100Hz) that is tuned to 5000Hz. Thesignal output has an amplitude of 0.1V. The filster is thenreturned to 9000Hz. Ske
Study code acquisition in frequncy hopping spread spectrum communication systems.Describe and explain why it is necessary. Design and demonstrate a code acqusition method.
An indecisive student contemplates whether he should stay home ortake his final exam, which is being held 2 miles away. Starting at home, the student travels half the distance to the exam venue befo
The results of open-circuit and short-circuit tests on asingle-phase, 25kVA 440V / 220V, 60Hz transformer are as follows: Open-circuit test (primary open-circuited, with instrumentation on the seconda
Design a decade counter using the excess 3 code for decimal digits. Use NAND gates and the indicated flip flop types for a D flipflop.
You are hired by a leading credit card company, Ford Chase Bank. One of their directos, Julie Hollas wants you to perform a small calculation for her. A customer wants to charge a Japanese robot t
Assuming that the current through and inductor is i l(t) = 10exp(-t/3). Find at what time this current dropped by 50percent of its initial value.
Construct an inverting Dc integrator circuit using a jumperwire to act as the switch across the feedback capacitor. Notice that the input voltage is 0 V, so the output voltage shouldnot change, even
The particle moves through one-quarter of a circle in a time of 2.30E-3 s, at which time it leaves the field heading due south. All during the motion the particle moves perpendicular to the magnetic
If Nand gates are used throughoutand a ripple-carry design is used, calculate the delay through the adder, assuming all inputs are presented at the same instant, and counting D seconds per gate. Whi