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An audio amplifier system, using a noinverting op-amp circuit, needs to have a small-signal bandwidth of 20kHz. The open-loop low-frequency voltage gain of the op-amp is 10^5 and the unity -gain bandwidth is 1 MHz. What is the maximum closed-loop voltage gain that can be obtained for these specifications?
An Ericson cycle operates on 0.227 kg of nitrogen from 650oC to 92oC. If 68kJ of heat is added during the isothermal expansion process, determine a) the overall expansion ratio; b) the heat transferred to the regenerator
assuming k>0 what is steady state the response of the above system due to an input of the form , x(t) = 2sigma(t)+u(t). where sigma(t) denotes unit impulse function and u(t) denotes unit step function
A message signal 0.01e^(-5000*t^2) phase modulates a carrier signal 3 cos(240000 pi t) with a modulation constant 600*sqrt(e). (a) Determine the expression, the power, and the bandwidth of the modulated signal.
Describe and explain drift current and diffusion current in a PN junction in thermal equilibrium. What causes each. In which directions are the electrons, holes, electron current, and hole current flowing for each effect
Computer security is not an issue for organizations alone. Anyone whose personal computer is connected to a network or the Internet faces a potential risk of attack. Identify all the potential security threats on a personal computer.
A series circuit has a 1k(ohm) resistance and a 1k(ohm) inductive reactance. v1= 1 vrms a. what is the impedance of the circuit in rectangular form b. the frequency is given as 1kHz, what is the inductance of the coil L= c.
Three positive point charges, each with q = 3 nC, are located at the corners of a triangle in the x-y plane, with one corner at the origin, another at (2 cm, 0, 0), and the third at (0, 2 cm, 0). Find the electric field, E', at the origin.
Each single phase transformer has an identical number of turns in the primary and secondary windings. If a line-to-line voltage of 480V is applied on the wye windings, compute the line-to-line voltage on the delta windings.
When the input x(t) = 5u(t) is applied to a linear second-order circuit the response of the state variable is y(t) = 10e^(-100t)-5e^(-200t) + 5. Design a simple RLC circuit that would produce all of these responses.
A system is needed to measure flow, which continuously cycles between 20 and 30 gal/min with a period of 30 sec. The required output is a voltage varying from -2.5 to +2.5 V for the cycling flow range. The sensor to be used has a transfer function..
Construct the straight line Bode plot of the gain. Is this a low-pass, high-pass, bandpass, or bandstop function Estimate the cutoff frequency and the passband gain. Note that s = jw. This problem uses the letter T for system function.
Use computer graphics/ or by hand to illustrate 6-pole stator winding of an AC machine. For wt = 0 and wt = 180o show the phasor diagram of phase currents, polarity of currents in individual conductors, and the flux paths.
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