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Assume a voltage source supplies an AC voltage of amplitude V(o) between its output terminals. If the output terminals are connected to an external circuit, and an ac current of amplitude I(o) flows out of the terminals then the equivalent resistance of the external circuit is R(eq) = V(o) / I(o).
If a transformer with N(p) and N(s) turns in its primary and secondary, respectively, is placed between the source and the resistor (primary facing voltage source, secondary facing resistor), what is R(eq)?
What are the impedances of an inductor and a capacitor (of any value) at a frequency of 0 Hz (DC) and at infinite frequency. Once we know what they are , how can this information help us in analyzing a circuit.
From a simple pn junction diode, predict the expected relative magnitudes of ac capacitances in a bipolar junction transistor under normal operating conditions(base emitter junction forward biased and base collector junction reverse biased).
Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related tree frogs in South America. If reinforcement of postzygotic isolation is occurring
∂Δnp/∂t = DN∂2Δnp/∂x^2 -Δnp/τn + GL is known as the minority carrier diffusion equation for electrons. (a) Why is it called a diffusion equation (b) Why is it referred to as a minority carrier equation
A stream of air at 80 °F and 1.2 atm absolute flowing at a rate of 200 ft3/h is blown through ducts that pass through the interior of a large industrial motor. The air emerges at 500 °F. Calculate the rate at which the air is removing heat generat..
compute the fourier transform of the following signals, using the symbolic manipulator to perform the integrations. Plot the signal x(t) and the magnitude |X(&)| of the fourier transform a) x(t) =2e ^ (-4t) cos (10t) u(t)
Two full charged 8A-Hr batteries are connected in parallel and supply power to a resistive load of 2.4 ohms. The open-circuit voltage of both batteries is 6.4VDC and the internal(Thevenin) resistances are 0.24 ohms and 0.28ohms.
The configuration is shown in Figure 6.5. Use six LEDs as shown in Table 6.1 to represent the outputs. The Time in This State can be met in several ways. One method is to use a debounced switch as input, another to input a 1 Hz clock.
A random sample of 50 mathematics grades out of a total of 200 showed a mean of 75 and a standard deviation of 10. (a) What are the 95% confidence limits for estimates of the mean of the 200 grades
Treat as an ideal gas ie it obeys pV=nRT law where pis pressure, V is volume, n is # of moles, R=82.056*10-6 m3-atm/mole-K is the universal gas constant and T is the absolute temperature.
Use Smith Chart: A 100 Ohm air-coaxial transmission line is measured to have an input impedance of 100 + j100 Ohms. If the system is operated at 100 MHz and is one meter long, what is the terminating load impedance
You are hired by a leading credit card company, Ford Chase Bank. One of their directos, Julie Hollas wants you to perform a small calculation for her. A customer wants to charge a Japanese robot to his credit card.
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