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Discuss the following elements of electric motor drive systems
1) Four quadrant operation
2) Voltage control
3) Current control
How many kg of coal with energy content of 24 MJ/kg would be equivalent to energy used by a 100-W light bulb burning constantly for the whole year. Coal to electricity conversion efficiency is 30%.
The voltage across the capacitor, vc(t), will reach some negative constant value after a long time. If the value of the capacitor is 39 microfarads, and if iC(t) is the same as in question 3 above, find the voltage across the capacitor at t = 7 sec..
placing the compensator or zero such that it will cancel the open-loop pole at -1. For both compensators you design, show the corresponding closed-loop transfer functions and compare the transient responses (P.O. and Ts).
A peri-stimulus time histogram (PSTH) is a commonly usedformat for displaying neurophysiological data. In a PSTH, theaverage firing rate of a neuron is depicted as a function of time.Trials are aligned in time onto the occurrence of a stimulus orb..
A base-station cellular communicationsystem utilizes arrays of f/2 dipoles as transmitting and receiving antennas. Assuming that each element is lossless and that the input power to each of the f/2 dipoles is 1 watt, determine at 1,900 MHz
A computer has 16-bit instructions and 64 registers. Suppose it is required to have at least 14 instructions designed to have 2 operands from registers (e.g., add, $1, $3 puts the sum of $1 and $3 into $1.
A three phase, 25-hp, 440-V, 60-Hz, 1750 rpm, wound-rotor induction motor has the following equivalent circuit parameters:R1=0.20 ohms, X1=1.0 ohms, R2=0.15 ohms, X2=0.8 ohms, Xm=30 ohms The motor is connected to a three phase, 440-V, 60-Hz supply.
Research about origin, formation process, and age of oil. What type of biota contributed to oil formation How is that linked to marine environment being conducive to oil formation What are the prospects for offshore oil beds
How do you design a 5x32 decoder circuit by using only the minimum number of 2x4 decoders, with enable
the output voltage of battery drop from 6V .With no load to 5.2V with a load current of 400mA. calculate the internal resistance.
the electric field srength E due to an infinite line of chargeis given by E = λ/(2πrεo), where λ is the charge per unit length and r is the radial distance from the wire. a, show that this formular for E still has the units of N/C.
Let A be a Mealy machine. Which of the following transformations, if any, yield a Moore machine? Explain. 1) Adding a D flip-flop to each output (the outputs of the new flip-flops will be the new outputs of the machine).
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