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A 250V rms system is supplying three parallel loads. One draws a 20kW at unity power factor, a second uses 25kVA at PF=.8 lagging, and the third requires a power of 30kW at a lagging PF of.75
What is the total power and apparant power supplied by the source? Also, at what PF does the source operate?
Design a op-amp summer to produce the output voltage Vo=2v11-10v12+3v13-v14. Assume the largest resistor value is 500k ohms, and the input impedance seen by each source is the largest value possible.
An electron is moving with a velocity of 2*10^6 cm/s. Determine the electron energy (in eV)), momentum, and de Broglie wavelength (in angstrom).
The read arm of a computer disk drive has the transfer function of G(s) = 1000/s^2. Design a digital controller that has a bandwidth of 100 Hz and a phase margin of 50 degrees. Use a sample rate of 6kHz.
The range of an analog signal is 2 Vpp, and the samples of this signal are being quantized. The quantizer-output word size is 10 bit. What is the quantization interval Q
Show that there are by developing an algorithm to generate them in base R, and use algebra to show that numbers generated by your algorithm will have the digit-reversing property. Then generate examples in binary
A 75 kW, 8 pole star connected induction motor operates froma 415 V, 50 Hz supply and draws 140 A when supplying full load.Determine: 1. the synchronous speed Ns;
an ordinary flashlight battery is found to have a potential of 1.4 V when disconnected and a potential of 1.2V vhen connected to a resistance that has a producing a current of 0.004 A. what is the internal resistance of the battery
An input signal of 10V at 0degrees and a frequency of 1592Hz is applied to a series RLC circuit with resistor R=100ohm, inductor L= 40mH, and a capacitor C=0.5uF. The value of the total circuit complex impedance is
A Gaussian source with mean zero and variance 1 is to be transmitted via a channel that can provide a transmission capacity of 1 bit per each source output. a) what is the minimum mean-squared-error achievable
how big will be inductance of coil if it is connected in series with resistor 30 omega on AC circuit with input voltage with RMS value U1=(220+2*1.7) V and frequency 50 Hz if power factor of the circuit is 0.6
Draw the circuit and discuss the operation of SA type ADC. Determine the conversion time of an SA-ADC for 12-bit resolution,at 2.5 MHz.
Suppose that you wish to offer a voice over IP wireless service. The target packet error rate (or drop rate) is 10^3 and you determine that if the signal is confined to within a coherence band, about 20% of the packets are dropped due to fading.
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