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at 60 Hz, a series LCR circuit contains reactances Xl= 20 ohms and Xc= 14 ohms and resistance = 10 ohms. what is the impedance at resonant frequency?
a). Develop a function with the name myAMmod to modulate the message signal. Use a carrier frequency fc=200hz. Plot the magnitude spectrum of the message signal and the modulated signal and explain the difference between them.
A wattmeter connected into the line gives a reading of 2765W. If a capacitor have a reactance of 30ohms is connected in parallel with the motor. Calculate the total reactive power absorbed by the capacitor and motor.
An infinitely long wire is placed in a space with relative permeability of 9000 carrying current of 1.9 A in the +y direction. What is the magnitude of the magnetic flux density at (0.03,0,0) [meters] in units of Tesla
a three phase motor operates at 70% efficiency, out of a 60Hz 480V balanced system of voltages. the motor takes a line current of 70A at a lagging power factor 65%. if the motor is rotating at 3500 rpm, and neglecting fraction, what is the torque ..
The load on a 460-V, 60-Hz, Y-connected, balance three-phase source consists of three equal Y-connected impedances of 100+j100 ohms, and three equal Delta-connected impedances of 300-j300 ohms. Compute the line current, power, and power factor for..
A link is transmitting 10 Mbps in a bandwidth of 10 MHz using 1 mW of power. (Box 1) What change will you do to double the data rate and why (Box 2) How can you use the link if the noise were larger than the signal
a) Using a table of the Gaussian distribution, determine an exact value for P[|X-n|>=2.5sigma] b) What is the upper bound on P[|X-n|>=2.5signma] given by the Chebyshev inequality
An ideal abrupt silicon pn junction has a \(N_{A} = 2 x 10^{17} cm^{-3} , N_{D} = 2 x 10^{15} cm^{-3} , \) 1) With derivation steps, calculate internal potential barrier V0 at 300K and 400K, respectively
Suppose that OFDM is used with 15 kHz subchannels. (Two subchannels are used as guard channels on either side of the band.) Specify an OFDM symbol rate and modulation format for each subchannel that can achieve the target rate.
1) 70 lbs/hr of steam at 300 psia, 500oF passes through a turbine which expands it to a pressure of 30 psia. If the turbine operates with an efficiency of 70%: a) What is the temperature of the steam leaving the turbine b) What is the quality (% v..
If X is a normal random variable with standard deviation 4.00, and if the probability that X is more than 5.52 is .1271 (as shown below), then what is the mean of X? (Note: the diagram is not necessarily to scale.)
1) What is the dynamic range for an 8-bit ADC 2) A device that responds to a small current or voltage change by activating a mechanical switch allowing a larger amount of current flow is a: a) transistor. b) transducer. c) solenoid. d) relay.
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