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A factory currently has 6 large induction motors connected to4.16-kV switch gear supplied radially from a single transformer. A plant expansion is planned in which 4 morelarge 4-kV motors must be added to the system. The current switch gear can not supply all 10 motors, because both the switch gear bus rating and the transformer rating would be exceeded. Propose a 4.16-kV system design to accommodate the new and existing motors.
How do the short length and medium length transmission line models differ and why Draw the equivalent circuit of a medium-length transmission line
An amplifier has a gain of 10 and follow a bandpass filter filter where the loss in the in the center of the bandpass is 0.05. What is the combined gain/loss of the two cascaded blocks at the center frequency of the filter
The PCI bus found in many computers transmits 64 bits per clock cycle at 33MHz. How does the bandwidth of the PCI bus compare to the serial FireWire (IEEE 1394) serial bus specification, which is 400 Mbits per second
Design an 8th order, type 1, FIR low-pass filter having a cutoff frequency of 8Hz for a signal acquired using 64Hz sampling rate.Use the window method with a hamming window. Note that youdon't need matlab to solve this exercise.
A 75 hp, 60 Hz, 2300 V, 20 A, 2 pole, wye connected, design B induction motor with code K delivers rated horsepower at 3500 r/min. Assume the phase angle of the locked-rotor impedance is 75 degrees.
Determine the probability that the receiver correctly receives the codeword for the first time on the k-th transmission. Also determine the average number of transmissions until the receiver correctly receives the codeword.
1. Draw the frequency spectrum at the output of the first balanced modulator. 2. If the filter is a low pass filter, draw the frequency spectrum at the output of the filter and amplifier.
Calculate: a. The rated primary and secondary currents b. The secondary voltage if it is connected at full load of 2000 kW c. The voltage regulation from no-load to full load. Voltage regulation is given by: (E(no-load)-E (full-load))/E(full-load)..
A rectangular pulse v(t) has a magnitude of 1.0 volts and duration 5 μs. The pulse is multiplied by a sine wave x(t) at a frequency of 2.0 MHz. a. Write down an expression for the spectrum of the signal y(t) = x(t) x v(t).
a) determine the wave equations for all three regions b) what is K for each region c) using matrix algebra, determine the coefficients to the wave eaquation in region 2
A pn junction diode and the base-emitter junction of an npn BJT have the same physical structure and doping level. The twoare connected in parallel and energized to the same voltage. If the diode current is 5mA and the BJT has a β of 50
Why is the "drop out" current less than the "pick up " current in a relay and why is this an important and common feature in a relay
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