Motor Trade Theory N1 — Document
April 2019 — N1 — Motor Trade Theory
N1
2019
Nated Engineering
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Q1— Section header —
1.1Choose the answer from the possible options given. rite nly the letter (A
1.1.10\the ANSWER BOOK
1.1.1may cause injury or harm to persons or property is unplanned and uncontrolled and caused by unsafe acts or conditions, resulting in harm to persons or property
1.1.2Write down which safety sign indicates a radiation hazard
1.1.3is used to insert piston rings into cylinder ring groove cleaner
1.1.4is in direct contact with the cooling water. requires water to be fitted. is the opposite of dry liner.
1.1.5This component controls the lateral movement of the crankshaft Release bearing Main bearing Big
1.1.6To check the evenness of the cylinder head mating surface, should be use d. straight edge and plastic gauge straight edge and feeler gauge
1.1.7Before fitting new rings to a used cylinder bore, the cylinder must be deglase using a eamer
1.1.8The four stroke engine cycle was developed by Nikolaus Otto Ottoman
1.1.9In the four stroke cycle, ignition takes place at the end of the stroke. st
1.1.10In the two stroke cycle, the cycle is completed after the crankshaft made
1.2Indicate whether the following statements are TRUE or FALSE Choose the answer and write only 'True' o 'False' next to the question number (1.2.1
1.2.10\the ANSWER BOOK.
1.2.1Petrol engines use spark plugs to ignite the air fuel mixture.
1.2.2A major advantage of front engine front wheel drive is improved traction.
1.2.3All diesel engines operate on two stroke cycle. 11040651
1.2.4Fuel injection systems have replaced carburettors on modern vehicles.
1.2.5The main reason fo r having oil clearance on crank journal bearings is to ensure a proper fit.
1.2.6The function of the oil pump is to maintain the required oil pressure in the engine lubricating system.
1.2Internal oil leaks cannot cause excessive oil consumption.
1.2Piston type oil pumps do not create much pulsation.
1.2One of the reasons of coolant additives is to allow the water to warm up more quickly
1.220
Q2— Section header —
2.1Name the FIVE categories of safety signs and name the geometric shapes of these signs (5 2\
2.2Name THREE types of pliers that can be used to cut wires (3\
2.3Explain how an error of parallax occurs when taking a reading
2.4Name ONE other error that can occur during measuring (1\ [16]16
Q3— Section header —
3.1Most passenger vehicles utilise a single dry plate clutch configuration State TWO functions of the assembly. (2
3.2Fully explain the operation of a helical clutch assembly.
3.3Explain the reason for the small indentations on some piston crowns
3.4Name , in the correct sequence, the components of a side camshaft in an overhead valve operating system
Q4— Section header —
4.1Explain the main difference in construction between the two stroke low peed diesel engine and the two
4.2Which component in the rotary engine serves the same fun ction as the piston in a piston type engine? (1\
4.3Over time the layout of engine has changed to improve t raction and space utilisation. Draw TWO simple sketches to indic
4.4When an engine overheats, the reasons could be related to mechanical defe cts or cooling system defects. State FOUR cooling system related defects that can cause overheating. (4\ [15]15
Q5— Section header —
5.1Some later model cars will sound a buzzer to indicate low oil pressure. What are the test conditions for the buzzer to sound? (3\
5.2State FOUR mechanically related defects that can cause low oil pressure. (4\
5.3The dry sump design allows for t he engine to be mounted lower. Explain the difference between wet sump and
5.4Draw a si mple, labelled sketch of a full flow lubrication system. (5\ [16]16
Q6— Section header —
6.1On diagnosing a hard starting complaint, you found the battery el ectrolyte level to be too low. Explain how this low level affects the operation of the battery.
6.2How does the electrolyte temperature influence the pecific ravity reading?
6.3Give the information indicated by the tyre marking 205/45 V R 17.
6.4What is the main constituent used in tyre manufacturing [13] TOTAL 10013
Topics Identified
1
Business Plan
Mark Allocation
Total100 marks
Sections20 + 16 + 20 + 15 + 16 + 13 = 100 marks
Paper information
TitleDocument
SubjectMotor Trade Theory
LevelN1
Document typeQuestion paper
Year2019
MonthApril
Pages6
Downloads2
Examination context
Decade2010s
Years ago7y
SeasonAutumn (SH)
Start dayMonday
Exam periodApril 2019
Days since exam2,749
About Motor Trade Theory examination preparation
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