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Suppose 0.730 kg/s of oil at 1.20 MPa and 20.0°C enters a system at 8.00 m/s and exits the system at 0.800 MPa, 40.0°C, and 4.00 m/s. The exit is 4.00 m below the inlet.
The specific weight of the oil is 6000. N/m3 , which is a constant throughout the system. The specific heat of the oil is constant at 1.21 kJ/(kg · K). Determine
(a) the heat transfer rate and
(b) the entropy production rate of this system if its boundary temperature is maintained constant at 40.0°C.
a defibrillator supplies a maximum energy dosage of 20 jouls, and the maximum voltage of 8 volt. suppose it is desired to charge the capacitor from an ideal DC current source, and they want to do it in less than 80 seconds.
Problem 1. In a city full of sunshine there are a number of people. They can either drive their cars (to work or elsewhere), which can cause pollution and traffic jams, or they can ride bicycles (which is not problematic, given that in that city it a..
Design an npn current mirror for this purpose. Neglect the base curents.
Assume that we make an enhancement to a computer that improves some mode of execution by a factor of 10. Enhanced mode is used 50% of the time, measured as a fraction of the execution time when the enhanced mode is in use.
A motor connected to a 220V(rms), 60Hz voltage source is marked as drawing a current of 13.5Amps(rms), with a power factorof 0.72 lagging and an efficiency of 83%. Suppose that the motor operates according to these specifications.
Plot the square-wave approximation by summing the series through the seventh harmonic.
It is believed that the etching may alter surface crack geometry (i.e., reduce crack length and increase the tip radius). Compute the ratio of the original and etched crack tip radii for an eightfold increase in fracture strength if two-thirds of ..
Design a digital circuit that can be attached to a school bill which can work automatically from 7:00 AM to 12:45 PM, and it has the following features: 1- Rings for 5 seconds. 2- Start ringing 7:00 AM to announce for the field gathering. 3- Rings 7:..
Find and plot the density of Z = X + Y.
Capture the following system behavior as an HLSM. The system counts the number of events on a single bit input B and always outputs that number unsigned on a 16-bit output C, which is initially0. An event is a change from 0 to 1 or from 1 to 0.
A new 24-bit processor is being designed for operation in a cell phone (you can assume the word-size is 24 bits). Suppose the following memory values are being stored in memory that is organized where each location is 8-bits wide (byte addressable..
A single-phase, half-wave SCR circuit is used to control the power consumption of an inductive load. The resistive component of the load is 5 Ohm. The source voltage is 120 V (rms). When the triggering angle is adjusted to 60 degrees
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