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A 200-V, 60-Hz, 10-hp single-phase induction motor operates at an efficiency of 0.86 and a power factor of 0.9. What capacitor should be placed in parallel with the motor so that the feeder supplying the motor will operate at unity power factor?
Consider the two-pole two-phase induction motor having two windings displaced 90° in space shown in Figure.The fields produced by the windings are given by Ba = Kia(t) cos(θ ) and Bb = Kib(t) cos( θ-90°). The two-phase source produces currents giv..
Application: Potential due to a charged disk. A thin disk of radius a carries a surface charge density ps = P0. Find the potential at a distance tI, on the axis of the disk (directly above its center) in free space.
A uniform electric field of magnitude 690 N/C exists between two parallel plates that are 3.88 cm apart. A proton is released from rest at the positive plate at the same instant an electron is released from rest at the negative plate.
Many ink-jet printers have six cartridges for different colored ink: black, cyan, magenta, yellow, light cyan and light magenta. A multibit signal in such a printer indicates selection of one of the colors. Devise a minimal length code for the sig..
Consider an ideal op-amp in inverting amplifier configuration with feedback impedance Rf=7ohms and an input impedance consisting of a series RL: Ri=9ohms and Li=5H. Let h(t) be the impulse response of the overall amplifer.
Determine the maximum bit rate for an FSK signal with a mark frequency of 48Khz, a space frequency of 52Khz, and an available bandwidth of 10kHz.
A collector modulated transmitter has a supply voltage of 48 V and an average collector current of 600 mA. What is the input power to the transmitter. How much modulating signal power is needed to produce 100 percent modulation.
Consider the following pilot (or training symbol) based scheme that converts the non-coherent communication into a coherent one by providing receiver CSI. The first symbol of the block is a known symbol and information is sent in the remaining sym..
A 10-cm high and 20-cm wide circuit board houses on its surface 100 closely spaced chips, each generating heat at a rate of 0.08 W and transferring it by convection to the surrounding air at 40°C.
For each of the following application: A) Wireless home AC remote.B) Nuclear Power plant monitoring system.
A coiled tungsten wire of diameter 50um and length 10cm is glowing at a temperature of 2000°C within an evacuated light bulb. Determine the irradiance of the filament and the fraction of irradiance within the visible range of wavelength.
What is the error-correcting coding overhead that will be added to each signal - what spectrum is required for each of the sensor signals?
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