WorksheetsMotor Vehicle MV2 152 Mock
Total questions: 24
Worksheet time: 12mins
On a four stroke engine how many revolutions would the crankshaft turn when the camshaft completes one revolution?
0.5
1
1.5
2
How many main bearings are there on a four-cylinder engine?
3
4
5
6
The three main types of oil pumps that could be used on a modern diesel engine are
gear, lift and eccentric vane
rotor, lift and eccentric vane
gear, rotor and eccentric vane
gear, crescent and eccentric vane
Which one of the following tests would be the best way to diagnose a badly sealing exhaust valve?
Block test
Emissions test
Cylinder leakage test
Coolant pressure test
Which one of the following should be used to check a cylinder head for flatness?
DTI gauge
Engineer’s rule
External Micrometer
Straight edge and feeler gauges
What is the term given for the distance travelled by the piston in a combustion engine?
Bore
Stroke
Top dead centre
Bottom dead centre
What percentage of oil is filtered in a full flow lubrication system, when the engine is warm, and the filter is clean?
25%
50%
75%
100%
Where would manufacturer’s tolerances be sourced from?
Job card.
Labour times.
Service check list.
Workshop manual.
Which test equipment could be used to manually check the engines, oil flowing force?
Low oil test kit.
Digital multimeter.
Pressure relief valve tester.
External oil pressure tester.
Which one of the following pieces of equipment can be used to check for crankshaft end float?
DTI gauge.
Micrometer.
Straight edge.
Vernier gauge.
When referring to oils, what do the initials ‘EP’ stand for?
Extra pressure.
Excess pressure.
Extreme pressure.
Extended pressure.
What would cause the engine oil pressure warning light to stay illuminated?
Oil level is correct.
Oil pressure is low.
Oil requires changing.
Oil pressure is correct.
Electric engine cooling fans are controlled by
a thyristor
a transistor
a thermistor
a thermostat.
Which component maintains engine optimal operating temperature?
Radiator.
Thermostat.
Water pump.
Pressure cap.
Which one of the following is the main reason for using electrically operated cooling fans?
The cost is cheaper.
The engine is quieter.
Increases fuel economy.
Decreases the fuel efficiency.
What is the most efficient method of checking for a suspected faulty head gasket?
A coolant hydrometer.
A variable boost gauge.
A combustion leak test kit.
An external oil pressure gauge.
Where is the best place for air temperature be measured to ensure an air conditioning system is operating efficiently?
Facia vents.
Engine air intake.
Expansion valve outlet.
Intake plenum chamber.
What precautions need to be taken when replacing a heater matrix?
Drain the vehicle’s engine’s oil.
Drain the coolant from the system.
Pressurise the system prior to removal.
Ensure engine is at running temperature.
What method of heat transfer is used in a heater matrix?
Thermal.
Radiation.
Conduction.
Convection.
Name the three common types of heat transfer within a vehicle engine cooling system?
Conduction, convection, and passive.
Conduction, convection, and radiation.
Convection, concentrated, and radiation.
Conduction, concentrated, and radiation.
Which one of the following does an expansion tank allow for?
The coolant to siphon off.
The screen wash to contract.
The antifreeze to contract due to the thermostat.
The coolant to expand and contract due to heat.
A badly worn cam lobe would cause what to occur?
A valve to open late and close late.
A valve to open early and close late.
A valve to open late and close early.
A valve to open early and close early.
What could be the most likely cause an engine to have a number of damaged valves?
An oil pump failure.
A snapped cam belt.
A damaged big end bearing.
An incorrect valve clearance.
If a thermostat is stuck open it would cause the engine to run at
at fixed temperature
at cooler temperatures
at optimum temperatures
at extremely higher temperatures.
