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The dielectric of a 20 μF capacitor has a resistance of 65 M Ω . This capacitor is fully charged from a 120 V d.c. supply. Calculate the time taken, after disconnection from the supply, for the capacitor to become fully discharged.
Find the force the electron exerts on a dust particle, charged with a total charge of 3.2 x 10-19 C (two protons) and located at a distance R from the electron.
A switch turns the voltage source on and off. Evaluate the voltages across each of the capacitors and determine whether the energy changes due to the switch being turned on or off.
Design a buck converter that has an output of 12 V from an input of 18 V. The output power is 10 W. The output voltage ripple must be no more than 100 mV p-p. Specify the duty ratio, switching frequency, and inductor and capacitor values.
The power consumption of asingle-phase electric load fed from a 120 volt source representedby: P(t) = 100 (1-e-t/10) KW where t is the unit time inhours. Compute the energy consumed by the load over the period of 24 hours.
Replace all the current sources by a single current source. Find the source voltage Vs.
The sinusodial modulating wave m(t) = (Am)cos(2*pi*fm*t) is applied to a phase modulator with sensitivity kp. The unmodulated carrier wave has frequency fc and amplitude Ac. Determine the spectrum of the resulting phase-modulated wave
a. Design a 3 bit combinational circuit 2's complimenter. (the circuit generates the 2's compliment of the input 3-bit binary number). [Show all work leading to the circuit implementation]
This washing machine would have a fill cycle to one level, a 10 second wash cycle, a 10 second rinse cycle and then drain. Include a start button, low level switch, high level switch, an agitator motor, a fill valve and a drain valve.
Write a 1,000-word essay about your chosen career. In this essay, you will include information gathered through research of external sources and your personal thoughts about your chosen career. You will use the entire writing process, from establishi..
In a transmission system the star side of a star/delta transformer is HV side, while in a distribution system the star side is the LV side. Explain.
A telephone switching board can handle 120 phones. Assuming the following, and determine the outgoing traffic intensity and the number of channels
A given signal f(t) is multiplied by this periodic signal. Determine an expression describing the spectrum and the time waveform of the resulting amplitude-modulated signal if all componets except those centered at + Wc
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