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A four-pole induction motor drives a load at 2500 rpm. This is to be accomplished by using an electronic converter to convert a 400-V dc source into a set of three-phase ac voltages. Find the frequency required for the ac voltages assuming that the slip is 4 percent. The load requires 2 hp. If the dc-to-ac converter has a power efficiency of 88 percent and the motor has a power efficiency of 80 percent, estimate the current taken from the dc source.
An OpAMP has a GBWP of 100MHz and a slew rate of 10V/us and AVoc = 160dB at DC. Assume VCC = +/- 15 Volts. a. If the opamp is configured as a non inverting amplifier with voltage gain of 50.
What is the main operation when a comparator cascade with an active third order low pass filter, with a feedback of output to input.
Ethree-phase, 5 hp, 208 V, 60 Hz induction motor runs at 1746 rpm when it delivers rated output power. (a) Determine the number of poles of the machine. (b) Determine the slip at full load. (c) Determine the frequency of the rotor current.
Design a discrete time Echo filter in order to process the demo signal Splat, using Fs = 8192 Hz. The filter should pass the original signal unchanged and the first echo should be located at 0.7 seconds with 10% attenuation
120V, 60 Hz source is connected to a distribution line whose resistance, and inductive reactance is 0.001Ohm, j0.002 Ohm, respectively. Single phase, 10HP, 120V, 0.85 pf. motor and 4Kw, 120V heater are connected in parallel.
Assume that only input combinations representing 0-9 can occur as inputs, so that combinations 1010 through 1111 are don't cares. Design your circuit using two, three, and four input NAND gates and inverters.
a) Explain the difference between a segment and a datagram. b) In virtual circuit networks, does a packet keep the same VC number on each of its links along its path from source to destination.
Design a high pass AC filter that meets the amplitude response of the bode plot in the given image. Use reasonable values for the components. Draw the circuit schematic showing all component values. Draw the bode plot phase response for the design..
A particular diode was measured to have VD = 0.62 V at ID = 5.895 mA. Determine the following: a) the reverse saturation current IS. b) VD for a forward current of 100 mA. Assume VT = 25 mV.
Design a passive first-order RC low-pass filter with a cutoff frequency fH = 10 kHz. Derive the step response and voltage transfer function.
The following heat engines produce power of 95,000 kW. Determine in each case the rates at which heat is absorbed from the hot reservoir and discarded to the cold reservoir. A Carnot engine operates between heat reservoirs at 750 K and 300 K.
A 100µF capacitance is connected in parallel with the series combination of 10-mH inductance and a 1 ohm resistance. Calculate the impedance of the combination in polar form for angular frequencies of 500, and 1000 radians per second?
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