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A power transistor for which Tjmax=180degrees Celsius can dissipate 50Watts at a case temperature of 50degrees. If it is connected to a heat sink using an insulating washer for which the thermal res
A voltage source V(t)=100cos(6Π109t - 45(degrees))(V) is connected to a series RLC circuit. If R = 10MΩ, C = 100pF, and L = 1H, use phasor notation to find the following: a.) i(t) b.) Vc(t)
A capacitor in an RC circuit with R = 5.00 W and C = 6.00 mF is being charged. What is the time required for the capacitor voltage to reach 86.5 percent of its steady-state value
e^-x=(1/e^x)=1/(1+x+(x^2/2)+(x^3/3!)+...) and compare with the true value of 6.737947*10^-3. Use 20 terms to evaluate each series and compute true and approximate relative errors as terms are added.
use an ideal op amp to design an inverting integrator with an input ressistanceof 10 kilo ohm and an integration time constant of 10^-3. What is the gain magnitude and phase angle of this circuit at
a high power FM station of frequency 96.9 MHz has an antenna height of 1200 feet. If the signal is to be recieved 60 miles from the station, how high does the listener need to mount their anntena in
an amplifier with 40dB of small signal , open circuit voltage gain ,an input resistance of 1 Mega ohm , and an output resistance of 10 ohm , drives a load of100 ohm. What voltage amd power gain (exp
Write the phasor expression I for the following current using a cosine reference a.)i(t) = I0cos(ωt - π/6): b.) i(t) = I0sin(ωt + π/3):
What is the main operation when a comparator cascade with an active third order low pass filter, with a feedback of output to input.
Consider two signals that have the same frequency. When the amplitude of the first signal is at its maximum, the amplitude of the second signal is at half its maximum from the zero level. What is th
a particular electric utility charges customers different rates depending on their daily rate of energy consuption 0.05khw up to 20 kwh and 0.1 kwh for all energy usage above 20 kwh in any 24 hour p
A given cable has characteristic impedance Z0 = 100 Ohms. At a given position on the line, the voltage amplitude is 1 V. Draw a sketch (a snapshot at a fixed time) of the forward-traveling voltage a
a) Why is it that if the power system of interest is physically smaller than the wavelength, we can represent it as a lumped-parameter system b) Why a long wavenenth requires a gigantic antennas
In a swamped common-emitter BJT amplifier, as shown below, if Vcc = 12 V, R1 = 8.2 k , R2 = 10 k , Rc = 500 , RE = 1 k , VBE = 0.7 V, and = 100, what is the transistor's emitter current
1. The net charge through a cross section of a circuit element is given by q(t)=2t+t^2 C. As usual, t is in seconds. Find the current through the element in amperes. 2. the current through a g
The controlled variable in a closed-loop system is the direction of a robot arm. Initially, it is at 50o; then it is commanded to go to 15o. When the error is 10o for the first time, what is directi
An analog LTIC system with impulse response function h(t) = u(t+1)-u(t-2) is presented with an input x(t) = t(u(t) - u(t-2)). (a). Determine and plot the system output y(t) = x(t)*h(t)
Consider the half-wave rectifier below. Assume the transformer output has amplitude 10.0 V and the diode forward voltage drop is zero. (a) What is the average output voltage (b) What's the RMS outpu
Suppose users share a 1Mbps link. Also suppose that the traffic generation process of each user alternates (independently of the other users) between periods of activity (active modes), when the use
The repulsive force one exerts on the other when they are 20cm apart is 1.35 X 10-4 N. after the balls are touched together and then represented once again to 20cm, now the repulsive force is found
Discuss why it is important to understand how interpret data from op amp datasheets. How might this skill be used when designing op amp circuits.
Discuss why it is important to consider the Gain Bandwith Product (GBW) and the Slew Rate (SR) when selecting an op amp for a particular application. What other factors are important and why.
A CCD camera chip of dimensions 7x7 mm, and having 1024x1024 elements, is focused on a square, flat area, located 0.5m away. How many line pairs per mm will this camera be able to resolve. The camer
A body attached to earth ground by an electrical conductor is at zero electrical potential. A charge of 25 C is added to the body. What is the potential of the body now. Explain.
Lets assume that one electron is removed from each atom and these electrons are all removed from the penny to a distance such that the force of attraction between the positively charged penny and th