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WorksheetsLV03.2 Remove and Replacing Electrical Units and Components MF
Total questions: 18
Worksheet time: 12mins
The alternator stator is found
In the slip ring
In the rotor
In the rectifier
In the casing
To power a heavy duty 12 volt starter motor, you may need to connect two 12 volt batteries:
In parallel
In the boot
In series/parallel
In series
In a vehicle alternator the rectifier pack:
Converts DC to AC
Converts AC to DC
Has a zener diode
Regulates the voltage
If R1 fails in this lighting circuit what will happen to R2 and R3?
They will both stay lit
Only R2 will stay lit
Only R3 will stay lit
Both will go out
What is the maximum amperage this meter can measure?
10A
3A
400A
200A
To avoid damaging an ammeter you should only connect it:
In parallel with circuit components
In series with circuit components
Between positive and negative
Between negative and positive
How should a voltmeter and ammeter be connected to measure the resistance in a switch?
The voltmeter and the ammeter should both be connected in parallel with the switch
The voltmeter and the ammeter should bothe be connected in series with the switch
The ammeter should be connected in parallel and the voltmeter in series with the switch
The voltmeter should be connected in parallel and the ammeter in series with the switch
The light from a front fog light is dim. Which of the following is NOT a possible cause of the fault?
Corroded earth connection
Corroded light reflector
Open circuit supply cable
Corroded supply cable
When the starter switch is operated the pre-engaged starter motor turns the engine very slowly. Which of the following is NOT a possible cause of the fault?
A corroded battery connection
A loose starter cable
A partially discharged battery
A defective roller clutch
The diagram shows three resistors. If the resistor R1 is 1 ohm, R2 is 0.5 ohm and R3 is 1.5 ohm, what is the reading on the ammeter (A) when the switch is closed?
9 Amps
4 Amps
3 Amps
36 Amps
What is the optimum charging voltage for a vehicle with a 12V electrical system?
12.8
13.6
14.4
16.2
An ammeter is connected in series with a 12 volt lamp and shows a current flow of 2amp. What is the power rating of the lamp?
6 Watt
6 Ohms
24 Ohms
24 Watts
The diagram shows two resistors R1 & R2. What is the reading at voltmeter labeled V and the current draw of the resistor?
24 volts 24 amps
12 volts 4 amps
6 volts 4 amps
3 volts 24 amps
By connecting a voltmeter across the battery terminals and observing the reading whilst cranking over the starter motor you can:
Calculate the current used
Calculate the volt drop
Measure the compression ratio
Test the alternator
In an electrical circuit electrons flow:
When there is a battery connected
Where there is a potential difference
When there is a number of electrons present
Where there are wires connected
What type of engine would be in this vehicle?
V6 3Ltr
Inline 4 rotary forced induction
Inline 4 cylinder 1.6Ltr
Flat 6 normally aspirated
What is the measurement of electrical pressure?
Calories
Watts
Volts
Ohms
The diagram shows two resistors R1 & R2. What is the reading on the ammeter labeled A2 and the voltmeter labeled V?
A2 = 2 amps, V = 12 volt
A2 = 6 amps, V = 12 volt
A2 = 6 amps, V = 3 volt
A2 = 4 amps, V = 3 volt
