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given a "black box" with two terminals. You play around with the box for a while and make the following observations:
(i) The output voltage from the box is sinusoidal.
(ii) The peak magnitude of the open-circuit voltage at the terminals is 5 V.
(iii) When you connect a 50 resistor across the terminals, the peak magnitude of thevoltage across the resistor is 2.795 V.
(iv) If you short the terminals, the peak magnitude of the current through the short circuitis 100 mA.
Find the power available from the "black box."
Determine log10 0.2 = log10 18/90, and compare to log10 18 - log10 90.
(a) Find the maxterm expression for F. Express your answer both in decimal and algebraic form. (b) Use a Karnaugh map to find the minimum sum-of-products form for F'. (c) Find the minimum product-of-sums for F.
a sinusoidal voltage has a peak value of 15V, a frequency of 500Hz, and crosses zero with a positive slope at t=0.1 ms. write an expression for the voltage using a cosine function in terms of t and constant pi.
Capacity, Data and Transfer Rates, Access Time of Disk Drive, A hard disk drive has 10 disks and 18 surfaces available for recording. Each surface is composed of 200 concentric tracks and the disks rotate at 7200 r.p.m.
Students should type up, assemble and emulate the BIN2ASCII program which converts the value entered in R3 from Hexadecimal to ASCII. This should be done by dividing R3 by 10 (decimal) and converting the remainder to ASCII
For much of the last century, the annual growth rate of energy utilization in the world was 3.5% per year. At present, the rate of global energy usage is approximately 15 TW. When considering only coal, oil, and gas.
Help with problem in Control signal processing class, Consider the unity-feedback control system whose open-loop transfer function is
At the end, the wave totally reflects with a pi phase shift, and the reflected wave now interferes with the incident wave to yield a standing wave pattern over the line length.a) Determine the standing wave pattern for the voltage in the line.
A second-order control system has the closed-loop transfer function T(s)=Y(s)/R(s). The system specifications for a step input follow. Show the permissible area for the poles of T(s) in order to achieve the desired response.
(a) A Ge bar 0.1 cm long and 100 m2 in cross-sectional area is doped with 1×1017 cm-3 gallium. Find the current at 300 K with 10 V applied. (b) Upon a steady illumination uniform excess carriers are generated in the Ge bar.
Use the fact that x = 2 and y = 0 at t = 0 to determine the appropriate value of the arbitrary constant in the solution set.
If the breakdown voltage increases with temperature at a rate of 40 mV/"C, find the break-down voltage of the diode at room temperature, assuming that the space-charge resistance is 10 C& independent of temperature.
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