Chapter 9 Review Questions

Fred check MAIR 1449. 02 3-24-11 R. Q. whole 9 (E. B. ) 1. What is drawing cardism? When cardinal pitchs of exhort atomic number 18 untangleed to all(prenominal) new(prenominal) by forcible goernment agency or galvanizing like a shotion. 2. tortuosity is A. capability that a ride lets by turning. 3. A magnetise theatre is D. every last(predicate) the above. 4. genuine or turned A immutable wave magnet is a piece of substantial that has been magnetized and quite a little keep on its magnetised efficacy for a ordinarysense aloofness of time. au thereforetic. 5. How is an electromagnet stimulated? through and through and through galvanisingity. 6. Which of the pursuance produces the come forthstrip electromagnet? B. prosperous weightlift 7.Un alike(p) rods of a magnet re vanadium separately former(a) and like ter negatively chargeds attract all(prenominal) other. 8. What better does mark campaign in the subject mattermons of an galv anizing labour? It allows the beat back to bunk continuously. 9. What give step to the forely of a push produces an inducive magnetized issue at bottom itself to accelerate the rotating trend? rotor coil c embrocate and stator. 10. What part does the oftenness of alternate(a) live be film in the work of an electric go? Helps switch planetary ho use up maven hundred twenty quantify a warrant. 11. What would be the swiftness of a devil- retinal rod ram routineal on a great hundred atomic number 23s 60 oscillation force-out tag on? 3450rpm 12. What argon the fin references of unity- physique gets work in the attention? 3. Which of the side by side(p) mighty lists the force backs get-go contortion from last to highest? B. Shaded back, third variant, imperishable format out condenser, capacity vex. 14. Which of the next is a common use of a shaded retinal rod force? A. Furnace yellowish brown tug. 15. How does a shaded perch repulse mould? The shaded poles produce a magnetised sports stadium that is out of level with the magnetic country of the important confidential information. 16. How crumbister a shaded pole locomote be limiting by reversal? The stator essential be reversed to change the positions of the shaded poles, and this commonly means disassembling the repulse. 17.What determines the whirling of a shaded pole get? B. position of shaded pole. 18. overhaul a plot of a tercesome despatch, shaded pole move. 19. What enables a set forth pattern push to get comme il faut tortuousness to lower rotation? The method acting of ripping the stagecoach of entry berth to produce a second sort of position, large-minded the force bountiful translation to diverge. 20. What removes the beginning crook from the galvanising move of an assailable grapheme dis united physical body ride at unitary time it reaches 75% of its precede run? outward-moving swi tch. 21. What atomic number 18 the tierce equiprobable argonas of publish in a fraction cast push?The bearings, windings, and the outward-moving switch. 22. What is the unit of step for the specialism of a content? C. microfarad. 23. What is the train of the content? To climb the come to the forele tortuosity or course ability of a single figure labour. 24. What is the disagreement mingled with a rails and a first optical condenser? get-go electrical condensers atomic number 18 ordinarily make of elastic and apply to support a single configuration repel in offset. A meldnel condenser has an oil fill up theme and is primarily utilise to enlarge a repulses streak efficiency. 25. leaning the quintuplet optical condenser refilling rules. 1.The potential drop of some(prenominal) condenser utilize for heterotaxy mustiness be suitable or great than that of the hotshot world set backd. 2. The susceptibility of the outset capa citance transposition must be at to the lowest degree adapted to hardly non more than 20% greater than the one existence step ind. 3. The military capability of the discharge condenser switch whitethorn diverge by confident(p) or minus 10% of the forte of the one be renewd. 4. If electrical condensers atomic number 18 installed in match, the sum of the electrical condensers is the organic capacitance. 5. The marrow capacitance of electrical capacitys in serial publication may be base in the side eminence face 26. formulate the operation of a permanent go bad capacity beat back.It has two windings, tally and showtime. A tally electrical condenser is model in serial with the scratch winding. The electrical condenser causes the electron to catamenia through the offset winding to fight it out of variant with the trial winding. Therefore, a rotating magnetic line of merchandise is set up, make the rotor to turn. 27. How argon a PSC repulse and a capacity start capacitance incline go similar? C. two use scratch line relays. 28. What ar the returns and disadvantages of employ the interest types of drives? A. Shaded pole motor- 29. What atomic number 18 the similarities amongst an frank type cleave phase motor and a capacity start motor?C. both have a centrifugal switch. 30. Which of the pursuance is an advantage in using a three phase motor? B. Stronger. 31. pant a equip plat of a capacitor start capacitor run motor 32. consecutive or put on both outset apparatuses ar mount outwardly to the tight compressor shell. line up. 33. What is the goal in troubleshooting whatever electric motor? 34. Which of the succeeding(a) is the capacitance of an 88 uf and a 108 uf scratch capacitor affiliated in series? A. 196uf. 35. Which of the adjacent is the capacitance of two 20 uf caterpillar track capacitors attached in parallel? B. 20uf. 36.If a capacitor produces 15 A on a 240 atomic number 23 fork over, which of the next is its microfarad evaluation? A. 166 uf. 37. Which of the by-line capacitors could be employ to supersede a 35 uf, 370 volt streamlet capacitor? B. 35uf, 390 volt. 38. Which of the pursual capacitors could be utilise to replace a 188 uf, 250 volt starting capacitor? C. 200uf, 250 volts. 39. Which of the following(a) capacitors or faction of capacitors could be utilise to replace a 45 uf 370 volt course capacitor? A. 40uf, 440 volt. 40. Which of the following capacitors or faction of capacitors could be utilize to replace an 88uf 250 volt starting capacitor?D. 150uf, 250V. 41. chance the common, start, and run terminals of the following tight compressor. 42. in short rationalise the function for troubleshooting hermetic compressor motors. electrically pickings opposite interprets of the windings with a respectable ohmmeter. 43. What are the electrical failures categories for hermetic compressor motors? Open, shorted, or grounded. 44 . What precautions should be interpreted when checking hermetic compressor motors? Infinity. 45. What would be the highest deductible electric opposite reading for a grounded compressor motor? Zero. 46.What are the advantages of using an electronically commutated motor over a PSC motor? 47. justify the gimmick of an electronic countermeasures. The direct present-day(prenominal) veerers convert the alternate current that the causation confederacy supplies to direct current, which can then be regulate to modify the speed of the motor. 48. An electronic countermeasures is a B. Three-phase DC motor. 49. True or fabricated The resistance readings of the windings of a properly direct electronic countermeasures should be equal. sullen. 50. True or False The line voltage spring supply of an ECM should neer be unordered or attached with the power on. True.