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A solenoid consists of 400 turns per meter and carries a currentof .45 Amperes. A 20 turn coil is wrapped tightly around thecircumference of the solenoid. The ends of the solenoid areconnected to a
A car battery has an open-circuitterminal voltage of 12.6 volts. The voltage drops to 10.8 volts when the battery supplies 240 amps to thecar's starter motor. What is the Thevenin equivalent for thi
Suppose you have 20 identical capacitors in a series RCLcircuit. All of these capacitors are in series. How many of these capacitors much be removed so the resonant frequency is cut inhalf
A positive-sequence balanced three-phase wye-connected sourcesupplies power to a balanced wye-connected load. The magnitude of the line voltages is 150V. If the load impedance per phaseis 36+j12&Ome
a. design a half-subtractor circuit with inputs x and y and outputs Diff and B out. the circuit subracts the bits x - y and places thedifference in Diff and the borrow in B out. b. design a full- su
An FH-BPSK signal modulated with 6kbps data has a spectrum bandwidth of 20 MHz. the BPSK signal is filtered allowing only two spectral components on either side of the carrier find the maximum numbe
A DS-SS system requires 40 db of CW rejection of an interfering signal. it uses an 8-stage shift register m-sequence generator and transmits 1.5 kbps binary message data an a 2 GHz carrier. What clo
A spread spectrum system has a code rate that can be switched from 500 kbps to 1.5 Mbps in 100 k steps. If the message rate is 1.3 kbps and the processing gain is 1050. What step should the code be
Design a logic circuit to control electrical power to the engine ignition of a speed boat. Logic output I is to becomehigh if ignition power is to be applied and is to remain lowotherwise. Gasoline
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