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a) What are the FIVE requirements for synchronizing the alternator tot he grid?
b) What should happen once the synchronous alternator is synchronized? At that very instant, what should happen if the above five conditions are met?
c) What is so important about the size of the system to which you have just synchronized the alternator that makes the infinite bus consept so important to the ability to dispatch power
Explain why the short-circuit method for determining the Thevenin resistance of a circuit cannot be applied if the circuit does not contain any independent current or voltage sources.
Find the characteristics equation and the corresponding roots for the following ODEs and identify its case a) y" + 6Y' + 9y=0 b) 10y" + 18y' +5.6y=0 c) 10y" + 50y' + 65y =0 Slove the intial value problem a) problem 2a) with y(0)=2 and y'(0)=-5
a.) What isthe minimum sampling frequency to avoid aliasing b.)If the sampling frequency of fs=2500 samples/sec is used how many samples must be taken to give a frequency resolution of 10Hz
Each of the capacitance units is built of 4 similar 100V capacitors. Determine the capacitance of each capacitor.
Include worked solution, a discussion of any differences in the theoretical and measured values and screenshots that show your measurements and paste them into a document
A chopper is used to control the power flow from a dc source voltage of 125-V to a battery whose voltage is 240-V. The power transferred is 60 kW. Determine the duty cycle and the average input current.
Efficiency in a power transformer is 98.6 percent when loaded such that its copper losses are five times its core losses. Calculate the per unit resistance of this transformer.
Each pole of a 100kW, 250v flet-compound generator has a shunt field of 2000 turns and a series field of 7 turns. If the total shunt field resistance is 100 ohms, calculate mmf when the machine operates at rated voltage.
A liquid level system converts a 4-10 m level into a 4-20mA current. Design a three mode controller (PID im assuming) that outputs 0-5 volts with 50% PB, 0.03 min integration time, and 0.05 min derivative time. Fastest expected change time is 0.8 ..
For a mixture of ethane 60%, acetylene 20%, and benzene 20% total mass of 250 kg is loaded into a reactor obeying the Carnot cycle, we want to know which produces more work when reacted with 25% fuel, 60% O2, 15% CO2 for 30 cycles.
Design a PLC program and prepare a typical I/O connection diagram and ladder logic program for the following motor control specifications:1) A motor must be started and stopped from any one of three start/stop pushbotton stations.
Analysing spectrum anlyser output, A spectrum analyzer is connected to an unknown signal. The spectrum analyzer displays the power level of signals in dBm vertically and frequency horizontally. The spectrum of the unknown signal creates the follow..
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