griffiths w e hill c r and judge g g 1993 learning and practicing econometrics john willeys amp sons
Đề cương chi tiết học phần Kinh tế lượng (Học viện tài chính)
... Griffiths, W. E, Hill, C. R and Judge G G (1993) , Learning and Practicing Econometrics, John Willeys & Sons Salvatore, Dominick and Reagle Derrick (2002), Statistics and Econometrics, McGraw -Hill ... lượng, Nhà xuất Kinh tế Qu c dân Damodar N Gujarati (2004), Basis Econometrics, 4th edition, McGraw -Hill Irwin (cuốn sách c phiên tiếng việt Chương trình giảng dạy kinh tế Fulbright biên dịch) Griffiths, ... Dougherty, Christopher (2002), Introduction to Econometrics, Oxford University Press Chính sách môn h c yêu c u kh c giảng viên - Lên lớp đầy đủ - Làm tập nghiên c u tài liệu theo hướng dẫn giáo...
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Chương trình Giảng dạy Kinh tế Fulbright Niên khoá 2004 2005: Thẩm định đầu tư phát triển
... Manufacturing Industries in Argentina”, unpublished Ph D disertation, University of Chicago, 1971 Harberger, Arnold C. , and Wisecarver, Daniel L., “Private and Social Rates of Return to Capital ... Stern, Joseph J The Appraisal of Development Projects: A Practical Guide to Project Analysis with Case Studies and Solutions, New York, Praeger, 1975 Glenn P Jenkins & Arnold C Harberger 16 Hiệu ... Daniel L., "The Endowed Wealth of Nations Versus the Internal Rate of Return," Development Discussion Paper 75, Harvard Institute of International Development, July 1979 Michael Roemer and Stern,...
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McGraw-HillDictionary of Engineering Second Edition McGraw-Hill 2003 pptx
... building construction, chemical engineering, civil engineering, control systems, design engineering, electricity and electronics, engineering acoustics, industrial engineering, mechanics and mechanical ... services ix Copyright 2003 by The McGraw -Hill Companies, Inc Click Here for Terms of Use mechanical engineering—The branch of engineering concerned with energy conversion, mechanics, and mechanisms ... desired manner as time progresses design engineering—The branch of engineering concerned with the design of a product or facility according to generally accepted uniform standards and procedures,...
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Boston University/ Met College Administrative Sciences: McGraw-Hill/Irwin doc
... some of the accounting procedures that are used in practice No new accounting concepts are introduced The procedures described here provide the mechanical means for making it easier to record and ... the employee: Wage Expense 150 Accrued Wages 150 Recorded revenues to be apportioned among two or more accounting periods As was the case with recorded costs, these amounts were initially recorded ... sales revenues, cost of sales, selling expenses, and so on Revenue and expense transactions are recorded in their respective temporary accounts as the period progresses This procedure creates...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 1 Part 1 pot
... divided up into four regions Let R1 be the reluctance of the left-hand portion of the core, R2 be the reluctance of the center leg of the core, R3 be the reluctance of the center air gap, and R4 ... reluctance of the right-hand portion of the core, R4 be the reluctance of the right-hand air gap, and R5 be the reluctance of the center leg of the core Then the total reluctance of the core is RTOT ... twice the current in part (a)? (c) What are the reluctances of the central and right legs of the core under the conditions in part (a)? (d) What are the reluctances of the central and right legs...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 1 Part 2 ppt
... values could be selected for the flux density in part (a), and other numbers of turns could be selected in part (c) These other answers are also correct if the proper steps were followed, and ... impedances are given referred to the high-voltage side of the transformer (a) Find the equivalent circuit of this transformer referred to the high-voltage side (b) Find the per-unit equivalent circuit ... supplied by the source (b) Assume that the switch shown in the figure is closed, and calculate the current I, the power factor, and the real, reactive, and apparent power being supplied by the source...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 1 Part 3 ppsx
... that the apparent power rating of each transformer must be 231 kVA The ratings for each transformer in the bank for each connection are given below: Connection Primary Voltage Secondary Voltage Apparent ... three power factors The first row of I contains the lagging currents, the second row contains the unity currents, and the third row contains the leading currents 40 re = 0.85; im = sin(acos(re)); ... Lagging % Unity % Leading % Calculate VS referred to the primary side % for each current and power factor aVS = VP - (Req.*I + j.*Xeq.*I); % Refer the secondary voltages back to the % secondary...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 1 Part 4 pot
... reactive power Q, and apparent power S supplied by the generator What is the power factor of the generator? (c) With the switch closed, find the real power P, reactive power Q, and apparent power ... peak value of the input voltage were to decrease Then the time that it takes capacitor C1 to charge up to the breakover voltage of the DIAC will increase, and the SCR will be triggered later ... the beginning of each half cycle, the voltages across the DIAC and the SCR will both be smaller then their respective breakover voltages, so no current will flow to the load (except for the very...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 1 Part 5 ppsx
... b c c b b c c a a b 88 Conducting SCR (Positive) SCR3 SCR1 SCR1 SCR2 SCR2 SCR3 SCR3 Conducting SCR (Negative) SCR5 SCR5 SCR6 SCR6 SCR4 SCR4 SCR5 Triggered SCR Firing Angle SCR5 SCR1 SCR6 SCR2 ... happens when the capacitor charges up to a high enough voltage to decrease the current below IH If we ignore resistor R (because it is so much larger than RLOAD), the capacitor charges through resistor ... flow out of the rectifier almost constant Therefore, this circuit is a current source inverter The rectifier and filter together produce an approximately constant dc voltage and current across...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 1 Part 6 pps
... There are two plots here, one showing the entire spectrum, and the other one showing the close-in frequencies (those under 1000 Hz), which will have the most effect on machinery Note that there ... mechanical power consumed by the loop is equal to the amount of electrical power created by the loop This machine is acting as a generator, converting mechanical power into electrical power 4-2 Develop ... reference frequency Note that the only change between this program and that of part a is the frequency of the reference "fr" % Sample the data at 20000 Hz to get enough information % for spectral...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 1 Part 7 doc
... (a very large power system) if desired (a) What are the conditions required for paralleling the emergency generator with the existing power system? What is the generator’s rate of shaft rotation ... acceptable, because Generator has exceeded its power limits (d) To improve the power sharing among the three generators in (a) without affecting the operating frequency of the system, the operator ... increase the terminal voltages of the system without changing the power sharing between the generators 5-9 Three physically identical synchronous generators are operating in parallel They are...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 1 Part 8 ppt
... the motor’s efficiency at full load and unity power factor? (c) If the field current were increased by percent, what would the new value of the armature current be? What would the new power factor ... field current must be increased Since the power supplied to the load is independent of the field current level, an increase in field current increases E A while keeping the distance E A sin δ constant ... Three of these generators are each supplying a steady 75 MW at a frequency of 60 Hz, while the fourth generator (called the swing generator) handles all incremental load changes on the system while...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 1 Part 9 pot
... The higher the frequency, the faster B S sweeps over the stator, and the higher the armature reaction voltage Estat is Therefore, the armature reaction voltage is directly proportional to frequency ... the maximum reactive power—the maximum stator current and the maximum rotor current We will have to check each one separately, and limit the reactive power to the lesser of the two limits The ... power from or supplying reactive power to the power system? (d) Calculate the real power P and reactive power Q supplied or consumed by the machine under the conditions in part (c) Is the machine...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 1 Part 10 pps
... original rotor circuit was R2 / s , and s the resistance in the Thevenin equivalent circuit is RF The power consumed by the Thevenin equivalent circuit must be the same as the power consumed by the ... factor (d) The stator copper losses PSCL (e) The air-gap power PAG (f) The power converted from electrical to mechanical form Pconv (g) The induced torque τ ind (h) The load torque τ load (i) The ... MATLAB program to calculate the output-power versus speed curve is shown below % M-file: prob7_9b.m % M-file create a plot of the output pwer versus speed % curve of the induction motor of Problem...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 2 Part 1 pptx
... current However, since the line current for the original delta connection was times the phase current, while the line current for the Y starter connection is equal to its phase current, the line ... while the loop is under the pole faces When the loop goes beyond the pole faces, eind will momentarily fall to V, and the current flow will momentarily reverse Therefore, the average current flow ... To determine the starting code letter, we must find the locked-rotor kVA per horsepower, which is equivalent to finding the starting kVA per horsepower The easiest way to find the line current...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 2 Part 2 ppt
... Calculate the effective field current with and without % armature reaction Ther term i_f_ar is the field current % with armature reaction, and the term i_f_noar is the % field current without armature ... speed regulation? Calculate and plot the torquespeed characteristic for this motor (Neglect armature effects in this problem.) Note: Figure P9-4 shows incorrect values for RA + RS and RF in the ... Note: 9-8 Figure P9-3 shows incorrect values for RA and RF in the first printing of this book The correct values are given in the text, but shown incorrectly on the figure This will be corrected...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 2 Part 3 docx
... DC Motor Torque-Speed Characteristic'); grid on; The resulting torque-speed characteristic is shown below: 241 The extreme speeds in this characteristic are due to the very light flux in the ... the effective field current for each armature % current (Note that the magnetization curve is defined % in terms of shunt field current, so we will have to % translate the series field current ... calculate the internal generated voltage for % each armature current e_ a = v_t - i_a * r_ a; % Calculate the effective field current for each armature % current i_f = v_t / (r_ f + r_ adj) - (n_se...
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(McGraw-Hill) (Instructors Manual) Electric Machinery Fundamentals 4th Edition Episode 2 Part 4 pptx
... the dc machine is now decreased by percent What effect does this change have on the real power supplied by the motor-generator set? On the reactive power supplied by the motor-generator set? Calculate ... effect does this change have on the real power supplied by the motor-generator set? On the reactive power supplied by the motorgenerator set? Calculate the real and reactive power supplied or consumed ... internal generated voltage E A of the dc machine? How large is the internal generated voltage E A of the ac machine? (b) The field current in the ac machine is now increased by percent What effect...
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