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(1) A current source of value 2cos(2t) A is used to power a string of 2W lightbulbs. If you wanted to replace this current source with a DC one, but have the same power drop, what DC current should you apply (one decimal place needed)?
(2)A voltage source of value V=120cos(4t+pi) is applied to a resistor of value 10ohms. What is the average power dissipated in the resistor (integer number needed)
(3)A square wave voltage source with a peak value of 120V has a current of value 1A rms. What is the maximum average power this source can output?
(4)A voltage source of value V=6*sqrt(2)*cos(4t+45) is applied to a network of inductors, resistors and capacitors. You measure the current to be 1*cos(4t). What is the average power dissipated in the network (integer number needed)?
A transmitter operates with a carrier frequency of 2.0 MHz. It is amplitude modulated by two tones with frequencies of 1300 and 2300Hz. What frequencies are present in the output signal
The input analog signal is bandlimited to 3900 Hz. The overall frequency response is required to satisfy the following: Gain > -1.33 dB for frequencies less than 1, 333.33 Hz Gain
a. The mass of an electric car is 900 kg including the passengers. A single motor mounted on the front wheels drives the car, and the radius of the wheel is 0.3 m. The car is going downhill at a speed of 50 km/hr, and the slope of the hill is 30 d..
An ordinary broadcast television channel has a bandwidth of 6 MHz. How many FM radio stations (with a bandwidth of 200 kHz each) could be accommodated in one television channel using FDM
An ideal reheat Rankine cycle operates between the pressure limits of 10 kPa and 8 MPa, with reheat occurring at 4 MPa. The temperature of steam at the inlets of both turbines is 500°C, and the enthalpy of steam is 3185 kJ/kg at the exit
Autocorrelation and Tao, question from my ECE 302 class regarding the mean of a random process given a particular autocorrelation function in terms of tao.
Calculate the electrostatic energy that is stored in the structure if the intermediate space is filled with a dielectric whose relative dielectric constant is 10 and a voltage is applied between the conductors creating an electric field.
A perfect conductor 2m long is moved at a speed of 36 Km/hr through a magnetic field having a flux density of 1.0 T. If a 1 resistor is connected across the ends of the conductor, calculate: (a) The induced voltage (b) The current in the circuit
For a Wien-bridge oscillator Given R = 20Kohm and C = 10nF what is the frequency of oscillation Given a required frequency of oscillation of f = 3kHz and R = 5kohm, what should the value of C be
Can protons every flow through current? Even though in the overwhelming majority of cases the current flowing through a material is dominated by the movement of electrons"
Using the LM555 data sheet, make an estimate of the maximum fundamental operating frequency in the astable mode.
Find the characteristics equation and the corresponding roots for the following ODEs and identify its case a) y" + 6Y' + 9y=0 b) 10y" + 18y' +5.6y=0 c) 10y" + 50y' + 65y =0 Slove the intial value problem a) problem 2a) with y(0)=2 and y'(0)=-5
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