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If the collector of a transistor is connected to the base terminal, the transistor continues to operate in the forward-active mode, since the B-C junction is not reverse biased biased. Determine the small-signal resistance, re=Vce/Ie, of this two-terminal device in terms of gm, rπ, and ro.
A first order lowpass filter is operating in sinusoidal steady state conditions at a frequency of 2 kHz. It is determined that the positive peak of the output is delayed by 0.1 ms compared with the positive peak of the input.
Three of the above single phase transformers are connected as a 3-phase transformer bank. The high voltage side of the transformer bank is connected in Y and the power is supplied to the transformer bank through a transmission line
Telephone channels have a bandwidth of about 3.1khz. do the following in excel. A) If a telephone channel signal to noise ratio is 1000, how fast can a telephone channel carry data?
Given: Si is doped with boron atoms; concentration of boron atoms is 1014 cm-3. Find: carrier concentration in Si at T = 300 K. (Hint: use Principle of Space Charge Neutrality) Find: Ei - position of Fermi level in intrinsic Si at T..
(a) At t = 0, the current flowing in a 0.5-H inductance is 4 A. What constant voltage must be applied to reduce the current to 0 at t = 0.2 s (b) Starting at t = 0, a constant 12-V voltage source is applied to a 2-H inductor.
When the piston is at its bottom dead center, the gas is initially at 10 psig, 65°F, and 10.5 in 3 . After compression and when the piston is at top dead center, the gas is 180°F and occupies 1.5 in 3 . What would be the new pressure of the gas in..
A pair of synchronous machines, on the same shaft, may be used to generate power at 60 Hz from the given source of power at 50 Hz. Determine the minimum number of poles that the individual machines
A 10 uH inductor is connected to a circuit such that prior to t = 0 the current through the inductor is 10 mA. After t = 0 the current through the inductor is iL(t) = 10e^(-1000t) mA where t is time in seconds. a) Determine the expression for indu..
The Dynamics of the system are determined by the second order transfer function of the sensing element , which has a natural frequency of ωn=40 rad/sec and a damping ratio =0.1.
An input signal of 10 sin (2pi 1592t+0degrees) is applied to a series RC circuit with resistor R =1000ohm and capacitor C= 0.1 uF. The current flow through the capacitor is a. 10mApk angle 90 degrees b. 5mApk angle 45 degrees
A positive point charge of magnitude q1 lies at the origin. Derive an expression for the incremental work done in moving a second charge q2 through a distance dx from the starting position (x,y,z) in the direction of -ax.
Develop a control system to fill a container with water after it is emptied through a stopcock at the bottom. The system must automatically shut off the water when the container is filled.
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