L3 Electrics start check

What is the purpose of the alternator?

• provide electric power when engine off

• provide electric power when engine running

• provide electric power when starting

• provide electric power when vehicle stationary

Answer explanation

Alternator provides electrical power when engine is running.Alternator provides electrical power when engine is running.Alternator provides electrical power when engine is running.Alternator provides electrical power when engine is running.

When does the Battery provide power

• When a large amount of power is needed

• When electrical systems need power to function

• The battery provides power when the engine is stationary

• The battery provides power when the engine is running

What active materials are the battery plates made of?

• carbon and ferrous sulphate

• positive is lead peroxide and negative is porous lead

• positive is peroxide and negative is lead

• positive is lead and negative is porous

The electrolyte solution is made of

• Lysergic acid

• distilled water

• formic acid

• sulphuric acid

If a battery has 6 cells,How many volts is a cell in side battery?

• 2

• 4

• 6

• 12

A battery discharging occurs when

• A load is not present

• A load is placed across the battery terminals

• when the engine is running

• As required, if the battery is in working order

Charging occurs as ?

• Current flows out of the battery

• Current flows into the battery

• without any requirement

• provided there is a fuse

Electrolyte chemical reaction when discharging

• Electrolyte hydrogen combines with positive plate oxygen to form water

• Electrolyte sulphate combines with lead on plates to form lead sulphate

• Current flow reverses chemical action

• Electrolyte chemically reacts with lead plates.

Charging batterries chemical reaction changes

• Electrolyte chemically reacts with lead plates.

• Sulphate is forced back into electrolyte and combines with hydrogen, while oxygen returns to the positive plate to form lead peroxide.

• Process continues while voltage is applied, until all lead sulphate is converted

• Electrolyte sulphate combines with lead on plates to form lead sulphate

The unit of measurement for pressure is

• volts

• amps

• ohms

• watts