Technical_English_3_-_WB (Technical_English_3 WB тетрадь), страница 9

Oneend of each of these is in contact with one of the rotatingslip rings , and the other end is connected to the(8) _ _ _ _ __ShaftAn electrical generator converts mechanical energy intoelectrical energ . An AC generator, or altemator, is used in apower tation to create AC current. A generator consists of a( I ) per anent magnet . with concave cylindrical(_)\ hich produce a radial magneticfield: and an (3).

~ ith a solid steel bar,which i called an (4)and which hasa ( -)of copper \ ound around it. The42As the (9)rotates , the armature rotatesabout its axis and cuts across the force lines of the magneticfield. If the outer terminals of the armature are connected toan external power circuit , an electric current flows throughit.

During the first half tum, the coil cuts across the field nearthe magnet 's (10)and the lower slipring becomes positively charged . When the coil cuts near the(11 )during the second half turn , thelower slip ring becomes negatively charged . Thus in onerotation of the coil, the current changes its direction twice(alternating current). The faster the coil turns , the greaterthe frequency (in Hertz) of the current produced by thegenerator. In a direct current (DC) generator (not illustrated),a split-ring (12)is used to produce aunidirectional current.Section 21Label items 1-6 in the diagIam w ith the words in the box.kellyswiveldstnlg drill collardrill bitcasingThe mud circulation system2 Read this text and label items A-F in the diagram in I , using the w ords in italics.An oil well is cleaned out by means of a special Jiquid called 'drilling mud' w hich ipumped down the drill string into the well hole.

This liquid cools the drill bit, pick uppieces of rock (rock cuttings) and carries them up the weB hole to the top.The mud pump sucks the drilling mud from large open tanks (called 'mud pits') andpumps it through a hose, through the kelly and then down the drill string to the drillbit. There the mud collects the rock cuttings and carries them up through the spacebetween the drill string and the casing.

At the top of the well, the mud and cutting arecarried away through the mud return line.Now the mud flows into the shaker, w hich separates the mud from the rock cu . aThe mud goes back into the mud pits and is reused . The rock cuttings go into the'!reserve pit.3 Write the general words in the box unde r the illustrations to make technical compoundnouns.arm face field headreaction shoe sleevejacketsockmouldingpadplantplatepulseo-.l.~--,reflected pulsewellrockchemicalreflectedJK.leverprotectiveinsulating,- ,~.D I1 In entions1 Compare the differences between these two sports cars.

Modify comparisons 1-4below in a gene ral way and comparisons 5-8 in a specific way, using the prompts.RoadsterGT Sport1 Acceleration (0-100 kph / sees)7.95.92 Fuel economy (kilometres per litre)15.811.63 Stability*********4 Suspension*********5 Top speed (kph)1772486 Power (brake horsepower)1572467 Storage space (Iitres)1502908 Price (€)23,80934,182Examples:ISThe GT Sport accelerates a great deal faster than the Roadster.The maximum speed of the GT Sport is 71 kph faster than the Roadster's.123GT Sport / accelerate / great deal / fast / RoadsterRoadster / lot / economical / GT SportGT Sport / little / stable / RoadsterRoadster's suspension / slightly / good / GT Sport'smaximum speed / GT Sport / 71 kph / fast / Roadster 'sRoadster's engine / two thirds / powerful / GT Sport'sGT Sport's storage space / twice / large / Roadster'sGT Sport / 50% / expensive / Roadster45678..2 Write eight more sentences about the cars in 1, using the prompts.

Modify yourcomparisons in a general or specifi c way as appropriate.1 acceleration / worse The Roadster's acceleration is much worse than theGTSport's.2345678two thirds / fue lunstableless comfortabletwo thirdsone and a half timeshalf30%3 Write personal answers to these questions about travelling by bus, train or car, usinggeneral or specific comparisons.Example: I At weekends, I use the bus much more often. On weekdays, I use the traintwice as often as the bus.1 Which means of transport do you use more often on weekdays and at weekends?2 In our experience, how do they compare in terms of comfort, convenience, costand speed?44Design2 Buildings1&1i¥I Listen to the descriptions.

Write the description number next to the•picture.2 . . . Listen and write notes in the table about buildings A-C in 1.A Burj KhalifaB Taipei 101C Shanghai WondFinancial Cenb'e1 CityDubai2 CountryTaiwan3 Height4 Dept h of foundations80II5 Storeys6 Floor area7 Shaperectangular open; gat tap8 Use9 Further details3hotel,designed tawithstandearthquakes andstrong windshighest obse miodecICheck the answers for 2. Then, for each of lines 3-6 of the table write two sentencesusing superlative forms .

Use easily or by far where appropriate.3Burj Khalifa is by far the tal/est bu;/d;11!Jve -34455663 Sites1 Read the Com extJads from emails with descriptions of buildings. Match them with fourof the buildings A-H below. Complete the descriptions, using the words in the boxes.vertical rectangular diagridThe administration building has an angled frontelevation with an angled roofiine. There isa large window of coloured glass, divided intosections bymetal bars.

Bothsides of the window come down in a broken_ _ __ _ pattern .The academic block is a bUilding with a taperingpOinted end, one elevation of stone and one'elevation ofglass panels. Onthe nearest corner, there is a----post up to the corner of the roof, which has a- - - - - pattern along the side.4 PictureThe campus library is an irregu lar-sided building in brick,steel and glass. The ground floor elevation is glass andbrick. The twohave rear elevations of brick,and front elevations of glass; these wings are at rightangles to each other. The frontbetweenthe two wings are three-sided and are constructed ofglass and steel.

Theytowards the top, andlook like part of an eastern temple.0.curve d IrregularinclinedThe research. centre is adjacent to a park with talltrees. The bUilding is ofh.irI fls ape, with anregu ar Oor plan. The floor areas reduce in size asyou go up the three storeys. Two of the metal roofscurve down to become- - - - - side elevations.The first floor lobby, with. dI- - - - - smoked glassWin ows, ooks rather like an observation lounge.2 Check the answers for I. Then write four similar descriptions for the remainingbuildings, using the prompts. For each one, describe the plan of the building, itselevation and some visible details.A Department building: semi-circular / circular / elevation / tapering / metal / top /observation loungeC Student hostel: concrete / vertical / columns / elevation / windowsE Assembly room: three storey / six-sided / rectangular / natural stone / roof terrace /stone framework / conical pyramid / linked / walkways / two levelsH Research centre: rectangular / metal / perpendicular / columns / elevations / glassand brick / left / conical / bicycle racksII4 Word listNOUNS (products)NO UNS (build ings)ADJECTIVESADJECTIVES(shapes)accelerationaluminiumadjacentc ircu larappliancearchitectcompactcurvedconsumptionbeautyextensivecurvilinearlumenconcretefluorescentdiagonalstabilityelevationhatchedd iagridwattfunctionalityhorizontalVERBSinnovationincandescentdoughnutshapedbulgestoreyoptionalellipticalinspireADVERBSoverallinclinedtaperapproximat elypurpose-builtovalby farsail-likeperpendiculareasilystablepointedrough lystructuralsemi-ci rcularvirtuallyverticaltaperedzigzag11Label these pictures with adjectives of shape from column 4 of the Word list.243L::0/,.'U'~~(95eointed687009;j)10~cg2Find adjectives in the Word list that are the opposite of the words in italks.1 a compulsory check2 a limited area3 a very large car4 an unstable building5 a blunt instrument3&?Dand the adjectiYesListen to and repeat the nouns in column of the \oromore thanin column 4.

Underline the syllable with the main stress in each \ urdone syllable.II1 SpecuJation1Complete this ero s\ ord .123456789~1011234567pressing together so that the volumeis reducedthe force of one object striking anotherremoval of surface material by rubbinga break into two or more piecestemporary bending due to compressionexpansion or contraction because ofexcessive heat or cold (2 words)discovery and examination of facts aboutsomething8 damage caused by continuedloading (2 words)9 disintegration due to a chemical reactionwith water and oxygen10 sudden falling down (of a structure)I I a pulling or stretching force.:'Vertical word: the topic of this section2These statements were made after investigations into disasters.