Worksheets152 revision #4
Total questions: 30
Worksheet time: 15mins
What is the top of a piston called?
Expansion gap
Skirt
Crown
Ring
Which is the most common firing order?
1,3,4,2
1,2,3,4
4,2,1,3
4,3,1,2
Why should manufacturers instructions be used when carrying out engine repairs.
Repair completed before recommended time
Car is repaired quickly
Components are replaced correctly
Car is returned on time
An engine fitted with an Intercooler will have
Lower power output
A decreased volumetric efficiency
Increased volumetric efficiency
Reduced drag
An unusual noise emitting from the engine area would indicate
A possible fault
Excessive fuel consumption
A lack of power
A faulty radiator
What is the common valve adjustment rule on an 8 valve engine?
Rule of 6
Rule of 8
Rule of 9
Rule of 12
What is torque the measurement of?
Speed
Pressure
Output speed
Turning force
Which of the following will increase an engine's compression ratio?
Fitting larger big ends
Reducing the piston size
Increasing the piston height
Fitting smaller connecting rods
What is the capacity per cylinder of a 2.2 litre 4 cylinder engine.
220 ml
550 ml
600 ml
700 ml
What does TDC stand for
Turbo Diesel Car
Top Diesel Compression
Top Dead Center
Top Diesel center
Which of the following will cause an engine to overheat
Thermostat stuck open
Inlet valve over adjusted
restriction in heating pipes
Exhaust manifold gasket leaking.
Which of the following will cause the engine to rattle on start up when cold?
Incorrectly adjusted valve tappets
Excessively worn cam followers
Under adjusted valve clearance
Incorrectly adjusted drive belt
Which component delivers oil from the sump to the oil pump?
Oil Pressure Valve
Oil Strainer
Oil gallery
Oil Pump
Two types of common flow oil filter are
Semi-flow and by-pass
Full-flow and by-pass
By-pass and boundary
Full-flow and boundary
Engine oil thickness is classified by its
Viscosity
temperature
adhesiveness
Velocity
SAE stands for
Specification of automotive engines
Specification of automotive engineers
Society of automotive engineers
Society of aviation engineers
Prior to replacing an engine's main shell bearings, they should be
Lubricated with engine oil
refitted dry
Tightened with a ratchet
Left to soak overnight in oil
One examination method for an engine's lubrication system is
Block testing
Cylinder leakage test
Examination for external leaks
Pressure testing the cooling system
How should a technician check for a successful repair of a replacement head gasket
Check screen wash for external leaks
Run the engine until normal operating temperatures
Check engine oil pressure
Carry out coolant pressure test
API stands for
Automotive petroleum institute
American Petroleum Institute
American petroleum insurance
Automotive Paraffin institute
Oil Emulsification will signify an
External oil leak
Internal oil/coolant leak
External coolant leak
Internal pressure relief valve
What sensor measures water temperature
Thermostat
Oil pressure switch
Radiator core
Coolant temperature sensor
A cooling system is fitted with a pressurized cap in order to
Increase the coolant flow around the system
Increases the coolants boiling point
Lower the flow rate around the cooling system
Decrease the coolants boiling point
What must be taken into account when working on a vehicle's cooling system?
Pressure and time
Heat and pressure
Time and pressure
Weight and pressure
Heater matrix cores are manufactured from
Solid core tubes
Solid reflective tubes
Galvanized steel
Hollow cores with fins
In order to check the correct operation of a heater, the vehicle should be run until it
Has reached operating temperature
Has reached half operating temperature
Is at full throttle
Is idling when cold
Thermal conductivity is the amount of heat a particular substance can carry through it times by
Weight
Length
Temperature
Time
Adding a ratio of 70/30, antifreeze to water will raise the boiling point by
1 Degree C
5 Degree C
7 Degree C
13 Degree C
The cooling system design is called a
Thermo Siphon
Thermo expansion
Thermostatic contraction
Thermister expansion
Low oil pressure would be caused by
An internal cylinder leak
An external coolant leak
A stuck open pressure relief valve
Oil with a high viscosity rating
