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In each of the three phases in a balanced delta- connected load is composed of a 10mF capacitor in parellel with a series-connected 470 ohm resistor and 4mH inductor combination, assume a phase voltage of 400 V at 50 Hz. a) calculate the phase current b) the line current. c) the line voltage . d) the power factor at whic the source operates e) the total power delivered to the load.
Absorption loss of metal shielding, A plane metal shield offers an absorption loss of 30 dB at a frequency of 10 kHz to normally incident radiated emission.
Ziegler-Nichols Open Loop Tuning Often, when working with a faster loop, many people will opt only for a PI control philosophy
Maximum Amount of Channels A Link Can Carry, A microwave radio link operates over a bandwidth of 400 MHz at C band. The link carries a number of channels of data using FDMA.
Inflation in years 1-5 equals 3.1 percent, 2.2 percent, 1.6 percent, 1.3 percent, and 1.1 percent, respectively.
Place the relay in the Collector circuit, the resistor in the Base circuit and the diode in parallel with the relay to provide a path for current due to energizing the relay.
We use the time constant to characterize transients in electric circuits. In physics, the half-life is often used to characterize the exponential decay of physical quantities such as radioactive substances.
What is frequency sensitivity of the demodulator? What is the value of A_m for which the carrier component is reduced to zero for the second time
What is the total power density and total available current density between wavelength of 280 and 1240 nm for the AM0 and AM1.5 spectra. Assume each photon generates on electron-hole pair. You will need AM1.5 and AM1.0 spectra.
1) Modern technology has produced a small 1.5-volt alkaline battery with a nominal stored energy of 150 joules. For how many days will it power a calulator that draws a 2-mA current 2)The current entering the positive terminal of an element is
Calculate the electron and hole densities in an n-type silicon wafer (Nd=10^17 cm^-3) illuminated uniformly with 100 mW/cm^2 of red light (Eph = 1.8 eV). The absorption absorption coefficient of red light in silicon is 10^-3 cm^-1.
Determine the phase angle between the inverter fundamental voltage,VC1, and grid side voltage such that the power delivered to the grid is 10 kW and the fundamental current leads VS by 150°. Calculate the reactive power to the grid and draw the ph..
Three-phase inverter has Y-connected load of 10 ohm and 23mH inductance. The inverter frequency is 60Hz and the dc input voltage is 200v. Calculate line voltage rms? , Phase voltage, rms?
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