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Q. Explain AC voltage controllers?
Common applications for these controllers are found in fan, pump, and crane drives. Figure shows three-phase symmetrical ac voltage-controlled circuits for wye-connected and delta-connected stators, in which the thyristors are fired in the sequence that they are numbered, with a phase difference of 60°. The four-quadrant operation with plugging is obtained by the use of the typical circuit shown in Figure. Closed-loop speed-control systems have also been developed for single-quadrant and multiquadrant operation. Induction motor starters that realize energy savings are one of the ac voltage controller applications. However, one should look into the problems associated with harmonics.
Q. Show Capital asset pricing model? This model was developed by the William F Sharpe ( 1990 Nobel prize winner in the economy ) and john linter in 1960. The model attempt to c
Assignment
please i need to prepare thesis proposal based on the title above. analysis of recently exixting algorithm and propose an improved one. UGENTLY!!
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Give some applications of German silver. German silver is an alloy of zinc, nickel and copper. German silver is used in electrical measuring instruments.
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Can you explain how electrochemical grinding is advantageous over conventional grinding? How metal is moved in electrochemical grinding? What is the basic principle of electroch
explain the operation principle
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