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Determine the normalized impedance at λ/8 from the load if (a) its normalized impedance is 2 +j, (b) its normalized admittance is 0.2 - j0.5, (c) the reflection coefficient at load is0.3 + j0
A cylindrical wire of silicon has a radius of 1 mm and a length of8 cm. If a voltage of 5V is applied between the ends of the bar andμe = .11 m2/Vs, μh = .04m2/Vs, Ne = 1020electrons/m3 and Nh
A disk located at 0 < ρ < 1, z = 1 has a uniform chargedistribution with ρS = 200 pC/m2. A30μCμ point charge is located at the origin. Determine the force acting on the point cha
We have a load with an impedance given by Z=30+j40 ohms. The voltage across this load is V =1500sqrt(2)<30degrees V. Is the load inductive or capacitive Determine the power factor, power,reactive
Assume an analog (1st Generation) dual mode mobile phone that is designed to operate in both the 900 MHz and 1900 MHz band which has been allocated for cellular networks. The mobile phone is using a
A 1φ, 440 V, 80 kW load, having a lagging power factor of0.8 is supplied through a feeder of impedence 0.6 + j1.6 Ω anda 1φ, 100 kVA, 220/440 V, 60 Hz transformer. The equivalent imped
an ordinary flashlight battery is found to have a potential of 1.4 V when disconnected and a potential of 1.2V vhen connected to a resistance that has a producing a current of 0.004 A. what is the i
If a sonusoidal waveform has a frequency fo=1,010Hz and is sampled with fs=100Hz, what value of fa is perceived from the samples
A horizontal conductor that is part of a power line carries acurrent of 7200 A from south tonorth. Earth's magnetic field (60.0 µT) is directed towardthe north and is inclined downward at 70&d
If the voltage across a capacitor is a square wave, predict the resulting current waveform (draw the voltage and current waveforms). Repeat the process when the voltage across the capacitor is a sin
In a balanced three-phase wye-wye system, the source is anabc-sequence set ofvoltages. Zline=1+j1.8Ω, Zload=14+j12Ω, and the load voltage on the a phase isVAN=398.1<17.99oVrms. Find t
A random signal X can be observed only in the presence of independent addictive noise N. The observed quantity is Y = X + N.The joint probability density function of X and Y is f(x,y) = K exp[-(x2 +
What refractive index and what thickness do you need to make aquarter-wave anti-reflection coating between air and silicon at10GHz At λ0= 10μm Assume undoped silicon with losses negligible
An ECG lead is oriented such that its electrodes are placed onthe body in positions that pick up an electromyogram from the chestmuscles as well as the electrocardiogram. Design a circuit thatsepara
determine the most cost-effective implementation by;selecting cables sizes and supply voltages and appropriate insulation. Assume copper wire is 3x as expensive as auminum wire and every AWG size in
A circuit has in series an electromotive force given b E(t) = 5sin 100t V, a resistor of 10 Ω, an inductor of 0.05 H, and acapacitor of 2 x 10-4 farads. If the initial current andthe initial c
Sometimes, the series combination ofthese two devices is used to provide constant current to the LEDfrom a variable voltage. Sketch the overall volt amperecharacteristic to scale for the parallel co
The equivalent circuit for a typical automotive battery charging system is a three-phase delta-connected source which represents thestator coils of the alternator. a) Sketch the load voltagevoltage
An LTI system has an impulse response h(t) = e^(t) u(-t),where u(t) is the unit step signal. (a) Give a differential equation description for the system. (b)Suppose that an input signal is given as
In general,dimes should be given before nickels, e.g., if there are at leasttwo diis left, these should be given with a singlenickel, rather than five nickels. There is definitely a possibility that
What are the most common insulators used for extremely high voltages. Explain your answer with, at least, two points foreach insulator. Hint. they can withstand much highertemperatures than rubber i
on an oscilloscope grid, the vertical axis is set to 1V/division, and the horizontal (time) axis is set to 1 ms/division.The postion of the CRT trace has been adjusted so that zero volt(ground) corr
Design a buffer circuit to measure the voltage on a small capacitor using a bipolar transistor and a DVM. Design a similar circuitusing a FET transistor. Which is better and why
Consider four logical input lines(A,B,C, and D) to represent a fourbit decimal integer. The decimal value of this four bitinteger is to be shown on a seven segment display. You are todesign a functi