Automotive Electronics

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