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A boiler used to generate saturated steam is in the form of an un-finned, cross-flow heat exchanger, with water flowing through the tubes and a high-temperature gas in cross flow over the tubes. The gas, which has a specific heat of 1120 J/kg · K and a mass flow rate of 10 kg/s, enters the heat exchanger at 1400 K. The water, which has a flow rate of 3 kg/s, enters as saturated liquid at 450 K and leaves as saturated vapor at the same temperature. If the overall heat transfer coefficient is 50 W/m2 · K and there are 500 tubes, each of 0.025-m diameters what is the required tube length?
A 230V shunt motor having an armature resistance of 0.05 W and a field resistance of 75 W draws a line current of 7 A while running light at 1120 rev/min. The line current at a given load is 46 A.
A STAIRCASE LIGHT IS CONTROLLED BY TWO SWITCHES, ONE AT THE TOP OF THE STAIRS AND THE ANOTHER AT THE BOTTOM OF THE STAIRS. A)MAKE A TRUTH TABLE FOR THIS SYSTEM
For a "Personal water craft" water is pumped from beneath the craft and discharged out the rear in a 1.25 inch diameter stream at a velocity of 75 ft/sec. Assuming that the craft and rider weighs 650lbs find the force acting on the craft and maxim..
A system is described by the impulse response h(t) given in the following problems. Compute and plot the response of the system to the input signal x(t). (a) h(t) = t; 0
Suppose a signal is sampled at 1 kHz and you compute the DFT of the signal using 1000 signal samples. What frequency in Hz corresponds to the 150th value of the DFT
Two 5 H inductors connected in series are subjected to an electric current that changes at a rate of 4.5 amps per second. How much voltage will be dropped across the series combination
Submit an excel spreadsheet with your characterization results, and a screen shot of you amplifier schematics, and your simulation result running a sin wave (Use a vsin for input).
A 5stage single pipeline computer uses the pipeline mentioned in the lecture (not the book). It resolves the direction and target of a conditional branch instruction at the end of its third pipeline stage.
The average power is not necessarily equal to the average current times the average voltage. To show this, find a voltage waveform and current waveform where each has a zero average value but their product has a non-zero value.
ECG Amplifier Project Description
What property of the space charge region contributes to the collection of charge carriers and which is not present in the neutral regions where movement and collection are by diffusion. Which resistance term does this affect, series resistance, RS,..
Sketch the theoretical torque vs. speed characteristics for a series, shunt, and compound connected DC motor. Describe what will happen if a series motor is run under no load conditions. describe what will happen if a shunt motor experiences a lo..
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