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A 1 F capacitor is being charged through a 100 Ohm resistor. How long will it approximately take for the capacitor to reach about 63% of its final charge.
Derive the dynamic model and average value circuit of a buck converter assuming the ESRs of the inductor and capacitor are not equal to zero.
A series-resonant RLC circuit has R = 80 ?, L=25mh, and C=10pF. A) Sketch and label the circuit. B) Find fo, the resonant frequency. C) At what frequency is impedance a minimum D) What is the magnitude of the impedance at this frequency
A 340 V, 6 pole dc Shunt motor has the following parameters: Rating: 35 kW Current: 122 A Speed: 1000 rpmArmature resistance: 0.35 Ohm Sunt field resistance: 150 Ohm Friction&Windage loss: 1.2 kW
A 1.8-kW electric heater takes 15 min to boil a quantity of water. If this is done once a day and power costs 10 cents/kWh, what is the cost of its operation for 30 days
A 23-kVA, 2300/230-V, 60-Hz, step-down transformer has the following resistance and leakage-reactance values: R1 = 4 ohm, R2 = 0.04 ohm, Xl = 12 ohm, and X2 = 0.12 ohm. The transformer is operating at 75% of its rated load.
In the presentation, the presenter, Mr. Rob Tucker discussed three types of disturbance mitigation responses or measures. List the three mitigation types and give a short definition of each of the mitigation type.
If the EM wave of 10 kW transmitted is hitting a truly reflecting building at 20o and 5m from normal, the coefficient of reflection is r=0.5, at which location the reflected ray is max and its power density at 5m in that direction
g. What happened to all the power delivered to the resistors h. If the resistors are available with wattage ratings of 1/2 W, 1 W, 2 W, and 5 W, what minimum wattage rating can be used for each resistor
The Y-Connected synchronous motor whos nameplate is shown in Figure 1 has a per-unit synchronous reactance of 0.9 and a per-unit resistance of 0.02. a.) What is the rated input power of this motor
The transmit antenna gain is 2.1dB, and the receive antenna gain is 1.6dB. The received is 18Km away from the transmitter. The receiver has a Noise Figure of 8dB, Bandwidth 1.7 MHz and the Data Rate is 640K bps. You may assume T0 = 290K.
For a circuit we would like to implement, there are two control signals: x and y. If xy = 01, an 8-bit value R is incremented by 1 and control goes to a second state. If xy = 10, R is cleared to zero and control goes from the initial state to a th..
In a certain crystalline material the vacancy concentration at 25*C is one-fourth that at 80*C. At what temperature would the vacancy concentration be 3 times that at 80*C 2. Suppose one attempts to add a small amount of Ni to Cu in an effort to cr..
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