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WorksheetsAutomotive Electronics
Total questions: 20
Worksheet time: 9mins
The ECU in the electronic control system, receives signals from the sensors and determines the opening time for the injectors land which also controls the injection volume
True
False
The fuel is injected into the inlet manifold of each cylinder at _____________ timing.
same
different
unpredictable
none of the mentioned
The function of the ignition system is to _____________ the flame propagation process.
Stop
Initiate
Balance
None
In battery ignition system, the energy required for producing spark is obtained from a _____________ battery.
6v to 12v
12v to 24v
24v to 30v
None
The purpose of the spark advance mechanism is to assure that under every condition of engine operation, ignition takes place at the most favourable instant in time.
True
False
In a spark ignition engine combustion which is initiated between the spark plug electrodes spreads across the combustible mixture.
True
False
The main task of battery in automobile is to
Supply electricity to the alternator
Act as a reservoir or stabilizer of electricity
Supply electricity to the vehicle&electrical system at all times while the engine is running
Supply a large amount of power to turn the starter motor when the engine is being started
In an alternator, which component controls the output?
Voltage regulator
Cut out relay
Current regulator
Diode
What is the material of an alternator frame?
Cast iron
Brass
Copper
Aluminum
At the start of the engine, the charging voltage is _______
Lower
Higher
Same
Zero
The purpose of the dynamo in an automobile is to
Supply electric power
Convert mechanical energy to electrical energy
Partly convert engine power into electric power
Continually recharge the battery
The starting system includes
A battery, a starter, and an ignition switch
A battery, a distributor, and an ignition switch
A battery, a starter, and a distributor
A distributor, a starter, and an ignition switch
The induction coil steps up low voltage current of 6 or 12 volts to high voltage current upto about
10,000 volts
17,000volts
25,000volts
35,000volts
3-In ignition coil, the ratio between the number of turns of primary and secondary windings is about
1 to 50
1 to 100
1 to 200
1 to 400
The distributor serves the following purposes in the ignition system
It operates break and make mechanism
It distributes high tension current to spark plug at correct time
Both A and B
None
11-A solid state switch, known as Thyristor is employed in
Battery coil ignition system
Magneto Ignition system
Electronic Ignition system
Capacitive discharge Ignition system
The following is (are) the advantage(s) of Electronic Ignition system
Produces maximum output voltage
Better starting with cold engine
Less possibility of arcing at spark plug
All of the above
The flywheel and the pressure plate bind the clutch disc between them so that the engine and the transmission can be engaged.
Yes
No
The main function of intake manifold is that it
promotes the mixture of air and fuel
reduces intake noise
Cools the intake air to a suitable temperature
Distributes intake air equally to the cylinders
If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is called
Detonation
Ignition
Pre-ignition
Rumble
