MARCH 2018 Level 2 Technical Certificate in Land-Based Engineering Level 2 Land-Based Engineering Theory Exam

Transcription

1 * * MARCH 2018 Level 2 Tehnil Certifite in Ln-Bse Engineering Level 2 Ln-Bse Engineering Theory Exm Friy 16 Mrh :30 11:30 You shoul hve the following for this exmintion multiple-hoie nswer sheet pen with lk or lue ink non-progrmmle lultor This question pper is the property of the City n Guils of Lonon Institute n is to e returne fter the exmintion. Re the following notes efore you nswer ny questions You must use pen with lk or lue ink to omplete ll prts of the nswer sheet. Chek tht you hve the orret nswer sheet for the exmintion. Chek tht your nme n nite etils re printe orretly t the top of your nswer sheet. Inform the invigiltor if your nme or exmintion etils re not orret. Eh question shows four possile nswers (lettere,, n ); only one is orret. Deie whih one is orret n mrk your nswer on the nswer sheet with your pen. For exmple if you eie is orret, mrk your nswer like this If you wnt to hnge your nswer, nel your first hoie y filling in the nel ox elow the irle like this Then mrk the nswer whih you hve now eie is orret. For exmple if you now eie is orret, mrk your nswer like this Any other mrks on the form my invlite some of your nswers. Any lultions or rough working n e one on the question pper. Attempt ll questions. If you fin question iffiult, leve it n return to it lter. This pper ontins 50 questions. Answer them using the oxes numere 1 to 50 on the nswer sheet. The City n Guils of Lonon Institute 2018 ST J1 PO

2 Figure 2 4 Wht type of luth is shown in Figure 2? Figure 1 1 Wht oes wrning light C inite in Figure 1? Single plte iphrgm spring luth. Multi-plte oil spring luth. Single plte oil spring luth. Multi-plte iphrgm spring luth. The front ifferentil lok is engge. The rer PTO is engge. The rer ifferentil lok is engge. The front PTO is engge. 2 Whih one of the following woul e lsse s the min risk when jking up vehile? Explosion. Crushing. Tripping. Slipping. Figure 3 3 When rrying out visul inspetion, how is four wheel rive, ln se mhine ientifie? One live xle n two rive shfts. Two live xles n two rive shfts. Two live xles n four rive shfts. Four live xles n four rive shfts. 5 In Figure 3, ger A hs 40 teeth n ger C hs 10 teeth. This provies 4:1 ger reution 4:1 torque reution 1:4 ger multiplition 1:4 torque multiplition. 6 Whih one of the following tools woul e use to hek klsh etween gers A n C in Figure 3? Feeler guges. Mirometer. Dil test initor. Vernier lliper. 2

3 10 An otne rting is given to petrol engine oil nti-freeze iesel. 11 An EGR vlve is fitte etween the Figure 4 7 Whih one of the following is the orret spee of the output shft in Figure 4? 200 rpm. 400 rpm. 600 rpm. 800 rpm. yliner he n ritor inlet mnifol n ir filter exhust n inlet mnifols turo hrger n ir filter. 12 A trtor ynmometer onnets to the flywheel rer wheels power tke off ignosti soket. 13 In four yliner, four-stroke iesel engine, how mny egrees oes the mshft rotte through to omplete the full yle of opertion? Figure 5 8 In Figure 5, the hole lelle A is use to llow exess oil to espe lurite the rnkshft lote the shell ering lurite the mshft. 9 An oil hs SAE rting of 10W30. Wht oes the W stn for? Wetting. Winter. Wxing. Wter. Figure 6 14 Engine output is teste on ynmometer n the grph in Figure 6 is proue. Wht o the urves n represent? = power, = rpm. = torque, = power. = rpm, = torque. = power, = torque. 3 See next pge

4 15 Whih one of the following exhust gses will inrese if the engine is running hot? CO 2. O 2. CO. NoX. 16 When e to wter, nti-freeze will lower the oiling point n rise the freezing point of the wter lower the freezing point n rise the oiling point of the wter lower the freezing point n keep the oiling point of the wter the sme lower the oiling point n keep the freezing point of the wter the sme. 19 If voltmeter is onnete ross the ttery terminls whilst the engine is rnke, the reing on the meter shoul not rop elow 12 volts 10 volts 5 volts 1 volt. 20 An mmeter is onnete in series with 12 volt lmp n shows urrent flow of 3 mps. Wht is the power rting of the lmp? 4 wtts. 9 wtts. 15 wtts. 36 wtts. 17 A hrging system is teste n voltge reing of 15.2 volts is reore when the engine is t ile. Wht oes this inite? The hrging system is working n the ttery is hrge. The hrging system is working ut the retifier is fulty. The hrging system is working n the ttery is ishrge. The hrging system is working ut the regultor is fulty. Figure 8 21 Wht is the ttery voltge in the iruit shown in Figure 8? 6 volts. 12 volts. 24 volts. 150 volts. 22 A lmp is mrke 12 V 60/65 W. This mens tht Figure 7 18 Figure 7 shows solenoi. Wht is terminl A onnete to? it is single filment ul tht n e use for 60 W or 65 W output the minimum n mximum rnge of output of the filment is 60 W or 65 W it is suitle for either 6 V or 12 V system it is oule filment ul, one of 60 W n one of 65 W output. The ignition swith. The ttery. The strter motor. The lterntor. 4

5 Figure 11 Figure 9 23 Whih one of the following symols, in Figure 9, represents oil? If the eletrolyte from le i ttery is spilt on the vehile pintwork it shoul e remove using loth rke lener ol wter etergent. 26 Whih hyruli omponent is inite y A in Figure 11? Hyruli oil filter. Pressure relief vlve. Hyruli oil pump. Control vlve. 27 Wht min preution must e tken efore strting work on hyruli system? Drin the hyruli oil. De-pressurise the system. Remove the hyruli filter. Ensure it s t operting temperture. Figure 12 Figure Wht type of iruit is shown in Figure 10? Prlell. Chssis return. Series. Erth return. 28 For whih one of the following woul the equipment in Figure 12 e use to hek? The hyruli oil temperture. The hyruli oil pressure. The hyruli oil flow rte. The hyruli oil visosity. 5 See next pge

6 34 When n implement is tthe to the trtor with the three point linkge, whih link is onnete lst? Figure 13 Left. Right. Any. Top. 29 Wht oes the symol A represent in Figure 13? 35 Whih one of the following tools is use to tighten olts to the orret tightness? Single ting single ro yliner. Doule ting oule ro yliner. Doule ting single ro yliner. Single ting oule ro yliner. A rthet spnner. A ring spnner. A torque wrenh. An ir wrenh. 30 Whih one of the following will normlly e supplie with high pressure hyruli flui? Power tke off. Steering. Trnsmission. Triler rkes. Figure Wht oes the symol in Figure 14 represent? A vrile pump. A fixe pump. A fixe motor. A vrile motor. 32 Whih one of the following is the most pproprite wy to ispose of wste hyruli oil filters? By n uthorise ompny. By putting in with generl wste. By ininerting with other filters. By putting in wste oil ontiner. 33 Whih one of the following retes flow in si hyruli iruit? A hyruli motor. A hyruli pump. A hyruli vlve. A hyruli filter. 36 When heking mhinery for roworthiness, whih one of the following fults woul mke it illegl to rive on the ro? The hyruli oil level is low. The flshing eon is not working. There is re light showing to rer of vehile. The tyre tre epth is ove the legl limit. 37 When storing mhinery over winter, whih one of the following woul e suitle tion to tke? Remove the nti-freeze from the oolnt. Rise it off the groun on xle stns. Drin ll of the oil from the mhine. Grese ll of the rke linings. 38 How mny stellite signls oes GPS reeiver nee to etermine its position? When shoul the tyre pressures on n griulturl mhine e heke? When they re ol. When they re hot. When they re low. When they re wrm. 6

7 40 Why shoul turo hrge engine e llowe to ile efore inresing the engine spee? To llow the oil pressure to inrese. To llow the oost pressure to inrese. To llow the exhust gses to het up. To llow the inlet ir to expn fully. To nswer questions you must refer to Senrio 1. Senrio 1: A iesel trtor hs een rought into the workshop for servie n it hs een reporte to e poor strter, in ol onitions. The seon fult reporte is n intermittent non-strter in ll onitions. The following t is supplie to i the tehniin. Engine Front wheel nut torque Rer wheel nut torque Vlve lernes (ol) inlet Vlve lernes (ol) exhust Glow plug resistne Fuel type Fuel pressure Air filter type Engine oil type Engine oil n filter pity Coolnt pity Anti-freeze perentge Bttery Tehnil Dt 4 yliner, 8 vlve 200 Nm 350 Nm 0.15 mm 0.25 mm < 6 ohms Diesel ommon ril 2000 r Twin pper element 15W litres 8.52 litres 25% 12 v mintenne free 41 During the servie, the fuel filters must e hnge. The tehniin mkes list of tsks, however two of these tsks re not require. Whih is the orret orer of the tsks tht the tehniin must rry out? 1 Blee the fuel system. 2 Run engine n hek for leks. 3 Remove the filter. 4 Refit the filter. 5 Pre-fill the new filter. 6 Reple the sel. 3, 6, 4, 2 3, 1, 4, 6 5, 6, 4, 2 6, 3, 2, 5 42 To rry out fuel pressure test, wht oes the tehniin onnet the fuel pressure guge to? The fuel filter. The fuel tnk. The fuel ril. The fuel injetor. 43 To test the onition of the ttery, whih one of the following is the most pproprite piee of equipment to use? A universl multimeter. A hyrometer. A high rte ishrge meter. A refrtometer. 44 Aprt from the glow plugs, whih one of the following heks is lso neessry for the fult reporte on this trtor? Alterntor output. Anti-freeze strength. Corret hoke opertion. Gri heter opertion. 45 After testing the glow plugs, the following reings were reore. Whih one of the following glow plugs is unserviele? Numer 1 = 6.5 ohms. Numer 2 = 5.5 ohms. Numer 3 = 5.0 ohms. Numer 4 = 4.5 ohms. 7 See next pge

8 46 Sttement 1 The tehniin must set the rer wheel nut torque t 250 Nm. Sttement 2 The tehniin must set the nti-freeze quntity to 4.26 litres. Whih one of the following is orret for the sttements ove? 47 Whih one of the following woul use the seon reporte fult? Sttement 1 Sttement 2 True True True Flse Flse True Flse Flse A fulty set swith. Trnsmission put into neutrl. The prking rke is engge. Inepenent rke pels re lthe. 48 Whih tool shoul the tehniin use to just the vlve lernes? An internl metri mirometer. An internl imperil mirometer. A set of metri feeler guges. A set of imperil feeler guges. 49 The tehniin uses 2.5 litre oil jug to refill the engine. Is this the orret hoie of oil jug? Yes, euse it n e use 3 times to fill the engine to pity. No, euse the engine oil oes not nee hnging uring the servie. Yes, euse the engine shoul only e fille to 3.75 litres. No, euse jugs must not e use to fill the engine with oil. 50 Wht must the tehniin o to orretly servie the ir lener? Chnge oth filters. Chnge the primry filter. Chnge the seonry filter. Clen oth filters with prffin. NOW GO BACK AND CHECK YOUR WORK IMPORTANT - Are the etils t the top of the nswer sheet orret? Hve you fille in your nswers in INK in the pproprite oxes on the nswer sheet? 8