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An amplifier with an open-circuit voltage gain of -1000 and an output resistance of 100 Ω feeds a resistive load of 900 Ω. Negative feedback is provided by connection of a resistive voltage divider across the output and one-fiftieth of the output voltage fed back in serieswith the input signal. Determine the voltage gain with feedback. What percentage change in the voltage gain with feedback would be produced by a 50 per cent change in the voltage gain of the basic amplifier due to a change in the load? The loading effect of the feedback network can be neglected.
A DC shunt motor connected to a 120-v line runs at a speed of 1200 rpm when the armature current is 18A. The armature resistance is .1 ohms. Assuming constant field flux, what is the speed when the armature is 50A?(Hint : Speed is directly porport..
Design a half-wave rectifier power supply to deliver an average voltage of 9V with a peak to peak ripple of 2V to a load. The average load current is 100mA. Assume that ideal diodes and 60Hz. ac voltage sources of any amplitudes needed are avail..
A wind speed sensor generates an output voltage that ranges between 10 to 55 mV when the wind speed varies from 0 to 120Km/Hr.The output of the sensor is connected to an Analog to Digital Converter (ADC) through a signal conditioning circuit.
A sled of mass m is given a kick on a frozen pond. The kick imparts to it an initial speed of 1.60 m/s. The coefficient of kinetic friction between sled and ice is 0.110. Use energy considerations to find the distance the sled moves before it stop..
a. Determine the frequency and the period of x(t) b. Given another signal, y(t)= sin(3/4(t+1)+3/8), is y(t) identical to x(t) Why c. Given a discrete time signal x[n] = cos(3/4(n+1/2)+1/4) is it periodic Why
The waveform output by the signal generator in part (b) is changed so that the rectangular pulses have the same width but no longer are periodic. They occur at random intervals of time. Explain in words how the display on the spectrum screen would..
Create a program using AsmIDE, which utilizes the Fox 11 68HC11 microcontroller board: Speech timer where max time is 5 minutes Use the switches for:
Write a 500 - 550 word essay on the blackout, what caused the blackout, and any governmental regulations that were a result of the blackout and report. Reference at least one source in addition to the report, and format according to APA standard..
How many liters of chlorine gas, Cl2, can be obtained at 40C and787 mmHg from 9.41 g of hydrogen chloride, HCl, according to the following equation 2KMnO4(s) + 16HCl(aq) à 8H2O(l) 2KCl(aq) 2MnCl2(aq) + 5Cl(g)
For the purposes of the plot you may as well take the speed c, the height of the triangle at time 0, and the half width of the base all equal to 1. Make your plots for lots of times ranging from t = -4 to 4.
Light-emitting diodes - Dot Matrix VS. 7-segment Display - Why used Led dot matrix?
A voltage source Vs = 10 V is in series with a resistor of 10 kOhm. If the source transformation theorem is applied, what will the value of the current source be in mA
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