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Describe the energy for:
(a) a free electron;
(b) a strongly bound electron; and
(c) an electron in a periodic potential. Why do we get these different band schemes?
a. Functionally, how do closed-loop systems differ from open-loop system b. State one condition under which the error signal of a feedback control system would not be the difference between the input and the output.
A thin-walled tube of 20-mm diameter passes hot fluid at a mean temperature of 45°C in an experimental flow loop. The tube is mounted horizontally in quiescent air at a temperature of 15°C. To satisfy the stringent temperature control requirements..
Find the type and impedance in ohms of the series circuit elements that must be in the closed container of given figure for the indicated voltages and currents to exist at the input terminals.
design and implement an access control circuit for my research lab. There are two inputs - a key card swipe on the door that produces an ID in the 0.7 range, and a day/night sensor that is 1 during the day, and 0 at night.
One other racer was 5.00 m ahead when the winner started to accelerate but he was unable to accelerate and traveled at 12.4 m/s until the finish line. How far ahead of him in meters did the winner finish?
A temporary fault occurs at the location in the figure. The fault impedance is 200∠80° Ω. Compute the voltage sag at the load side. Assume the end of the feeder was unloaded before the fault.
A circuit consisting of a coil with inductance 10mH andresistance 20ohms is connected in series with a capacitor and a generator with an rms voltage of 120V. Find: a.)the value of the capacitance that will cause the circuit to be in resonance at 15..
Consider the casual LTI system where the output relates to the input by the following differential equation: dy(t)/dt + 2y(t) = x(t) a) Determine the frequency response H(jw).
Write an assembly program to add 10 8-bit numbers saved in the RAM location 1-10H. If the sum causes an overflow, the result should be saved in the memory location 11H otherwise it should be saved in location 12H - Write and assembly code to subtr..
The RS-232 serial port on a personal computer is transmitting 2400-bit/sec data using a polar NRZ line code that has a peak value of 12 V. Assume that binary 1's and 0's are equally likely to occur.
Assume that vout(t) = Acos(2π ft), and nd an expression for vin(t). Use the results of part (a) to find an expression for the transfer function H (f) = Vout/Vin for the system.
A digital communications system is being designed with the goal of transmitting 32 kbits/s over a channel having a bandwidth of 8 kHz. Determine (a) the number of encoding levels required and (b) the minimum signal-to-noise ratio required in the c..
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