WorksheetsLV08
Total questions: 30
Worksheet time: 15mins
One advantage of power assisted steering over manual steering on a light vehicle is:
A low steering box ratio reducing the number of turns
A high steering box ratio increasing the number of turns
A low steering box ratio increasing the number of turns
A high steering box ratio reducing the number of turns
When cornering a vehicle with electronically controlled air suspension will:
immediate air pressure to air springs on inside of bend
air pressure to air springs inside bend after short delay
air pressure to springs outside of bend after short delay
Immediate air pressure to springs on outside of bend
How would the thrust angle be set on a light vehicle?
Gauges on rear wheels, adjusting parallel to centre line
Gauges on same side adjusting parallel to centre line
Gauges on front wheels adjusting equal from front of vehicle
Gauges on front wheels adjusting parallel to centre line
A coil Spring is subjected to three forces during normal operation. These forces are:
Compressive, tensile and torsional
Shear, bending and compressive
Tensile, compressive and shear
Compressive, shear and torsional
A test on an ABS wheel sensor shows open circuit. An acceptable repair would be to:
Replace the sensor and wiring back to the nearest connector
Cut out damaged section of wiring and splice in new section
Replace wiring nearest connector sensor,splicing at sensor
Replace both sensors on same axle as the supplied in pairs
An ABS control unit calculates that a wheel is about to lock up by:
Sensing the deceleration force of the vehicle
Sensing a sudden drop in DC voltage from a wheel sensor
Sensing a sudden drop in speed from vehicle tachograph
Sensing a sudden drop in AC voltage from a wheel sensor
ABS light on round left corner. Fault code intermittent incompatible speed signal NSF sensor?
Poor connection NSF sensor when suspension extends
Poor connection NSF sensor each time suspension compresses
Unequal air gaps NSF and OSF sensor causing voltage to drop
Excessive play in front wheel bearing causing sensor to move
If the pump should fail in a hydraulic power assisted steering system:
The mechanical steering system must still operate
Engine will automatically go into reduced power mode
Steering lock will engage to prevent vehicle being used
Immobiliser will prevent vehicle being used until repair
When checking resistance in ABS modulator valve it's essential that:
The brake Pedal is not pressed
The wiring harness is connected to the pump
The wiring harness is disconnected from the pump
The vehicle ignition is switched off
Electronic brake force distribution (EBD) when applied to a light vehicle:
Controls brake force at rear wheels when unladen
Controls brake force at wheels by slip ratio of tyres
Controls brake force at wheels measuring load of axles
Controls brake force at wheels through road surface temp
The wave form created from an inductive wheel speed sensor is a
square wave
sine wave
spike wave
wobble wave
The acronym EBD stands for
Electronic brake force distribution
electric brake department
elastic brake disc
epicycle brake drive
excessive play felt at the steering wheel could be caused by:
worn track rod
broken spring
worn balljoint
worn steering knuckle
what kind of voltage is produced by an inductive wheel speed sensor?
AC voltage
DC voltage
AC/DC voltage
ABCD voltage
Oversteer is when
the rear slip angle is smaller than the front slip angle
the front slip angle is smaller than the front slip angle
the front slip angle is smaller than the rear slip angle
you lose the back end and crash
Ohms is a unit of measurement for:
Resistance
volts
Amps
Watts
Amps is a unit of measurement for:
electrical pressure
electrical current
electrical shock
electrical wattage
Volts is a unit of measurement for
electrical resistance
electrical current
electrical pressure
where do you view the vehicle to check camber angle?
At the side
At the front
At the rear
At the top
Where do you view the vehicle to check the caster angle?
At the front
At the rear
At the top
At the side
1. When checking for a defective ABS sensor, which of the following methods is used?
a) Connect an ohmmeter across the sensor output pins; reading should be 200 ohms
a) Connect an ammeter across the sensor output pins; reading should be 10 amps
a) Connect an oscilloscope across the sensor output pins and rotate the wheel
a) Connect a voltmeter across the sensor output pins; reading should be +/- 5 volts
1. As part of the MOT test, which THREE checks are carried out on a power steering system?
a) Static inspection, vehicle road test, play under load
a) Lock to lock check; play under load, hydraulic pump filter condition
a) Play under load, hydraulic system pressure, static inspection
a) Play under load, lock to lock check, static inspection
1. One cause of a vehicle having excessive front wheel tyre wear would be:
incorrect steering geometry
a) four wheel steering is fitted
a) steering torque sensor is inoperative
a) incorrect rear wheel camber
1. The component that senses the driver’s turning effort in an EPAS system is the:
a) torque sensor
a) power steering pump
a) steering speed sensor
a) flow control valve
It is normal practice for the ABS computer to have
a) very limited self-diagnosis capacity
a) a large self-diagnosis capacity
a) no modulator control
a) a manual bypass function
1. In a multiplexed system:
a) a data bus carries signals to and from control units
a) the supply voltage is very high
a) each sensor uses a separate ECU
a) more wire is required than conventional systems
1. Negative offset suspension is:
a) where an imaginary line extended through the steering axis meets the ground behind the extended vertical axis through the wheel centre
a) where the steering axis cuts the wheel axis below the wheel centre plane
a) the distance on the ground when viewed from the side, between the tyre contact point and king pin centre line
a) where the steering axis cuts the wheel axis above the wheel centre plane
1. In relation to the legal requirements affecting companies, what is the meaning of the abbreviation 'EPA'?
a) Extreme Pressure Act
b) Employees Protection Act
a) Environmental Protection Act
a) Employers Protection Act
1. If the braking system suffers brake fade this will:
a) give shorter stopping distances
a) reduce the fluid level
a) give longer stopping distances
a) give brake judder
Diagram represents wave form from inductive ABS sensor. As wheel speed increases the:
Voltage remains the same and frequency the same
Voltage increases and frequency increases
Voltage increses and frequency remains same
Voltage remains same and frequency increases
