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WorksheetsLV13 IMI MOCK TEST
Total questions: 56
Worksheet time: 6mins
Which component is the synchromesh hub?
A
B
H
P
How would you check for clutch slip?
Road test moving up and down the gear ratios without engaging the clutch.
In 1st gear listen for noise as you release clutch.
Handbrake on in 1st gear. Raise engine speed as you release the clutch.
Handbrake on in 3rd gear. Raise engine speed as you release the clutch.
When measuring transmission electronic control component resistances you would use a:
Multimeter set to VDC
Multimeter set to amps
Multimeter set to ohms
Multimeter set to VAC
ATF fluid is discolored and smells burnt. One possible cause could be slipping clutches.
True
False
When checking current consumption of transmission electronic control components you would use:
A tachometer
An ammeter
A heavy duty discharge tester
A voltmeter
Which components is the speed drive gear?
A
M
P
O
A CVT belt has:
A flat profile aluminium belt that transmits through friction.
A vee profile rubber belt that transmits drive through torsion
Extending steel belt that transmits the through compression.
A vee profile steel belt that transmits drive through friction.
Whilst carrying out gearbox overhauls you should:
Replace gearbox bearings.
Replace all the gearbox gaskets.
Tighten all bolts using a torque wrench.
All answers shown.
When measuring transmission electronic control components voltages you would use:
A multimeter set to VDC
A multimeter set to amps
A multimeter set to ohms
A multimeter set to decibles
When checking the input and output values of a transmission electronic control components you would use:
A hydrometer
A heavy duty discharge tester
A multimeter or oscilloscope
A pressure gauge
A compressed clutch spring is said to contain:
Kinetic energy which becomes potential energy when released.
Static energy which becomes potential energy when released.
Kinetic energy which becomes latent energy when released.
Potential energy which becomes kinetic energy when released.
When does the torque converter lock-up clutch begin to engage?
When the impeller and turbine are rotating at significantly different speeds to maximize torque multiplication.
When the vehicle is stationary and the turbine is not rotating
When the impeller and turbine speeds are very close, with only a small amount of slip remaining
Only when the impeller and turbine are rotating at exactly the same speed before clutch application
The automatic transmission stall test is used to check the torque converter operation and transmission slip
True
False
When traction control senses wheel slip it will:
Reduce RPM and brake both wheels.
Automatically brake the parallel driving wheel.
Stop the ABS modulator working.
Limit the engine RPM and brake the slipping wheel.
A CVT gearbox uses:
Epicyclic gearing
Belt and variable pulley arrangement
4, 5 or 6 gear ratios
Variable gear teeth
An oil pressure or vacuum test on an automatic gearbox will indicate:
Torque converter pressure
Pump return pressure.
The pressure applied to each brake band during selection.
Pedal pressure.
Single plate clutches are the best option for high power compact engines.
TRUE
FALSE
The final drive should be filled with
SAE30
EP90
Hygroscopic Fluid
SAE 5W-15
An overdrive gear is when :
Torque output reduced, Speed output increased
Torque output increased, Speed output reduced
Torque output reduced, Speed output reduced
Torque output increased, Speed output reduced
Transmission components mainly withstand:
Tensile loads
Torsional loads
Linear loads
Low loads.
Item B's one way clutch has seized. What effect will this have?
Difficulty moving away up a gradient
Poor acceleration moving from rest
Poor fuel economy and a reduction in top speed
All of the answers shown.
Which components make up reverse gear?
A,G
M,N
E,D,K
P,Q
The signal to the solenoid valves in an electronic transmission system is sent from:
Pattern select switch
Speed sensor
Throttle position sensor
ECU
What is the most likely cause of a rumbling noise when depressing the clutch pedal? (engine running)
Clutch plate
Release bearing
Flywheel
Input shaft
Engine running, in neutral and the clutch is not in use. A noise is heard what is the most likely cause?
Input shaft bearing
Worn friction lining
Worn release bearing
Output shaft bearing
A worn syncromesh baulk ring can cause gears to crash when being engaged.
True
False
Which of the following is one possible cause of an oil leak from a differential ?
blocked breather
over-inflated tyres
low oil level
excessive oil in the engine
What would cause a manual sequential gearbox to jump out of 3rd gear?
A slipping clutch
Worn selector balls and springs
Excessive differential free play
All answers shown
Which 2 letters indicate the differential sun gears (Side gears)?
M & N
O & N
P & Q
A & G
A gearbox has a tendency to select two gears at once, what is the most likely fault?
Damaged layshaft
Worn synchromesh baulk ring
Faulty interlock device
Worn clutch friction plate
What is the average life of an automatic gearbox?
150,000
300,000
25,000
189,000
What transmission fault could cause the following light to illuminate?
Stretched clutch cable
Worn friction plate
Faulty shift solenoid
Incorrect tyre sizes
How would you check the hydraulic oil pressure on an automatic gearbox?
Torque convertor pressure gauge
Pedal pressure test gauge
An oil pressure test gauge and suitable adapter
Oscilloscope and ammeter set to VDC
What fault would there be on the clutch if there was no free-play in the operating mechanism?
Judder
Drag
Slip
Fade
Which 2 letters indicate the pinion and ring gear ?
M & N
O & N
P & Q
A & G
When identifying a 4WD transmission system fault a technician should be aware that:
Wind-down occurs between front and rear driveline units
Transmission will only allow up changes on hard road surfaces
Wind-up occurs between front and rear driveline units
Transmission will only allow down changes off road surfaces
Which component, when engaged, allows maximum tractive force?
Transfer box
Differential lock
Differential
Overdrive gear
ONE advantage of using a CVT transmission is:
It uses epicyclic gearing making it very compact
4, 5, or 6 possible gear ratios
To increase the complexity
Infinite number of possible gear ratios
What is the purpose of the grooves on the conical surface of a synchromesh baulk ring?
Smaller contact area to reduce friction between surfaces
Provide rapid breakdown of the oil allowing synchronization
Better lubrication of the friction faces prevent overheating
To prevent the engagement of more than one gear at a time
Which one of the following can be used as a third differential on a 4WD system.
Viscous coupling
Transfer box
Synchroniser hub
Hookes joint
A worn synchromesh baulk ring can cause :
The gears to crash when being engaged
Difficulty when disengaging gears
Excessive vibration on overrun
Noisy reverse
Planetary gears are held in place by a :
Sun gear
Planet carrier
Ring gear
Turbine
A typical gear ratio for 4th gear, in a five speed gearbox is:
0.56: 1
1.00: 1
1.43: 1
2.07: 1
Which one of the following statements is correct?
Actuators send electrical signals to the ECU
Sensors receive electrical signals from the ECU
Fibre optic cables transmit light signals along glass fibres
Electrical resistance is measured in watts
The maximum torque multiplication in a torque converter is around:
2.2:1
1:1
4:1
14.7:1
In a multiplexed vehicle wiring system;
The supply voltage is very high
The data bus carriers signals to and from ECUs
More wire is required than conventional system
The bus terminates at bath street
An epicyclic gear can produce:
2 forward gears and reverse
3 forward gears and reverse
4 forward gears and reverse
5 forward gears and reverse
The picture shows a type of fluid coupling. Component 'A' in the diagram is the:
Impeller and has curved blades
Stator and is attached to a one-way clutch
Turbine and has straight blades
Turbine and has curved blades
The picture shows a simple epicyclic gear train. In an automatic gearbox it is conventional practice for the epicyclic gear train shown to:
Provide two reverse gears and one forward gear
Provide two forward gears and one reverse gear
Be coupled with a fluid flywheel to provide torque multiplication
Be coupled with other epicyclic gear trains to provide more forward gears
There is a constant driveline noise that occurs at all speed, what is the cause?
Half shaft bearing
Pinion and crown wheel worn
Side bearings worn
Planet gears worn
The stator is seized inside the torque converter, What effect would this have on the vehicle?
Difficulty accelerating
Difficulty going up hills
Poor fuel consumption
All answers
A single plate clutch would be a suitable for a compact vehicle.
True
False
Fluid contamination on a clutch would cause:
Slipping
Judder
Drag
All answer
How would you check for a slipping clutch ?
Apply handbrake and place in top gear , bring engine up to speed and gently release the clutch
Apply handbrake and place in neutral , quickly release clutch and increase throttle
Apply handbrake and place in 3rd gear , bring engine up to speed and gently release the clutch
Apply handbrake and place in 1st gear , quickly release clutch and increase throttle
In an epicyclic gear set, how is reverse gear typically achieved?
By locking the sun gear and driving the ring gear
By holding the planet carrier and driving the sun gear
By driving the sun gear and holding the ring gear
By releasing all components
How is neutral achieved in a epicyclic gearset?
By locking both the sun gear and ring gear
By allowing all components to rotate freely without being held
By driving the planet carrier and holding the ring gear
By locking the sun gear and planet carrier
