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An AC induction motor is rated at 900 rpm, 200V, 60HZ 3-phase. If reduce the motor speed by reducing the line frequency to 20HZ, what should be the line voltage?
A production plant has a requirement for a counter that will count 4,000 times before recycling and starting over. How many flip flpos are required?
Can protons every flow through current? Even though in the overwhelming majority of cases the current flowing through a material is dominated by the movement of electrons"
In a balanced three-phase wye-wye system, the load impedance is 10 +j1 Ohms. The source has phase sequence abc and the line voltage Vab = 220 Vrms /30°. The load voltage is VAN = 120 Vrms /0°.
An insurance company has made you the following retirement offer. If you pay them $100,000 now, you will receive payments of $8000 a year for 10 years. After this they will pay you $9000 a year in perpetuity (for ever).
Consider an AlGaAs based heterostructure laser diode which has an optical cavity of length 200 microns. The peak radiation is at 870 nm and the refractive index of GaAs is about 3.7. What is the mode integer m of the peak radiation
Apple A5 die size is 122mm^2 when fabricated in 45nm technology. Assume they purchase 300mm wafers at a foundry for $ 2.5K /wafer. Assume a yield of 70%. What is Apple's approximate die cost?
Contains basic function in MATLAB files. Write MATLAB script(s) to plot the basic signals below in two subplots. The upper subplot should be a continuous waveform (don't do g) and the lower subplot should be a discrete plot.
how to determine the sensitivity of junction depth to changes in furnace temperature by calculating (dxj/xj)/(dT/T) for a drive diffusion.
Discuss whether this is still true today, and what factors are moving wireless NICs into a more dominant role, if any.
In the differential amplifier shown in the schematic, R1 = R2 = 10 k ohm; R3 = R4 = 100 k ohm. Assume the ECG voltage at V1 = 100 mV, and the ECG voltage at V2 = - 100 mV. There is a power line interference of 200 mV at both input sites.
a) If the internal resistance of a voltmeter is 100x bigger than the output impedance of a circuit, what is the loading error b) If the internal resistance of an ammeter is 10x smaller than the output impedance of a circuit
The voltage across a 0.2 H coil is given. What is the sinusoidal expression for the current?
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