WorksheetsLV08 Chassis level 3
Total questions: 19
Worksheet time: 38mins
Name
Class
Date
1.
On an inductive wheel speed sensor one way to increase the output voltage would be to
a)
Increase the sensor input voltage
b)
Decrease the sensor air gap
c)
increase the sensor air gap
d)
decrease the sensor input voltage
2.
How can an ABS sensor be tested whilst still in position on the car
a)
Connect voltmeter to sensor wires and look for a 5 volts
b)
Connect ammeter to sensor wires and look for 20 amps
c)
An ABS sensor can not be tested in situ
d)
By connecting an oscilloscope to the output wires
3.
The electronic brake force distribution system on a light vehicle controls the brake
a)
monitoring the slip ratio of the tyres on the road
b)
monitoring the load applied to the front and rear axles
c)
reducing the brake force when the vehicle is unladen
d)
monitoring road surfaces using moisture and temp sensors
4.
During traction control operation the
a)
brake is released on gripping wheel until traction found
b)
brake is applied to gripping wheel until traction found
c)
brake is applied to the slipping wheel until traction found
d)
brake is released on slipping wheel until; traction found
5.
A fault on an electronic brake force distribution system will cause
a)
the engine to produce reduced power
b)
the EDC system to shut down
c)
the electronic gearbox to select neutral
d)
the ABS to stop working
6.
During braking an insecure load on a vehicle roof will slide forward due to
a)
inertia force
b)
gravitational force
c)
normal force
d)
centrifugal force
7.
If a motor fails on an electronic power steering system
a)
the engine will go to reduced power
b)
the driver must still be able to steer the car
c)
the steering locks up in the straight ahead position
d)
the engine will stop working until the fault is repaired
8.
An ABS system calculates a wheel is about to lock by
a)
sensing the deceleration force of the vehicle
b)
sensing the sudden drop of DC voltage at the wheel sensor
c)
sensing the sudden drop of AC voltage at the wheel sensor
d)
Sensing the sudden drop of speed from the vehicle taco graph
9.
when checking an exciter ring it read this reading left from 0, if run out of 0.18mm is allowed
a)
the ring is in spec by 0.07mm
b)
the ring is out of spec by 0.78mm
c)
the ring is in spec by 0.70mm
d)
the ring is out of spec by 0.07mm
10.
One advantage of electronic Power Assisted Steering over hydraulic PAS is
a)
reduced steering rack ratio
b)
no torque steering required
c)
more fuel efficient
d)
Less steering effort required
11.
Which steering angle gives self centring after turning on a light vehicle
a)
castor
b)
swivel pin inclination
c)
camber
d)
negative offset
12.
One symptom of self levelling suspension not working on a laden estate car would be
a)
The hydraulic PAS would become lighter than normal
b)
The engine management system would reduce engine power
c)
The vehicle would tend to understeer when cornering
d)
The headlights could dazzle oncoming drivers at nighttime
13.
when checking maximum pressure of a hydraulic PAS rack and pinion system you must ensure that
a)
the steered wheels are placed on turntables
b)
The steered wheels are lifted off the ground
c)
the passenger wheel is prevented from turning
d)
Both steered wheels are prevented from turning
14.
When discussing the coefficient of friction it can be said
a)
coefficient of friction is equal whether static or dynamic
b)
Dynamic coefficient of friction is lower than static
c)
Dynamic coefficient of friction is higher than static
d)
there is no such thing as coefficient of friction
15.
A fault with a Yaw sensor will most probably cause
a)
the ABS warning light to illuminate
b)
the diesel control warning light to illuminate
c)
the electric power steering warning light to illuminate
d)
the adaptive ride warning light to illuminate
16.
The ABS modulator units function is to
a)
control the fluid pressure to each wheel when ABS is working
b)
regulate pressure to rear wheels under normal braking
c)
regulate pressure to front wheel under normal braking
d)
Hold car still when parked
17.
You can change the amount of assistance to an Electronic Power assisting system by
a)
Changing the current between the motor and the sensor
b)
Changing ratio between the column and torque control unit
c)
Changing the gear ratio between the rack and steering column
d)
Changing volts to the motor in relation to steering torque
18.
As the road wheel increases the wheel speed sensor
a)
voltage and frequency increase
b)
frequency increases and voltage stays the same
c)
Voltage and frequency stay the same
d)
Voltage increases and frequency stays the same
19.
Inductive passive ABS sensors produce
a)
DC voltage
b)
No voltage atall
c)
a high current
d)
AC voltage
100 %
