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WorksheetsLead-Acid Battery and Alternator Quiz
Total questions: 16
Worksheet time: 8mins
What is the primary function of a lead-acid battery in a car?
To start the car and run accessories when the engine is off
To power the car's engine continuously
To convert AC to DC
To regulate the car's speed
How many cells does a 12-volt lead-acid car battery have?
Ten
Eight
Six
Four
What are the two main components of each cell in a lead-acid battery?
Copper and zinc plates
Aluminum and iron plates
Lead and lead dioxide plates
Nickel and cadmium plates
What is the composition of the electrolyte bath in a lead-acid battery?
70% water and 30% sulfuric acid
65% water and 35% sulfuric acid
80% water and 20% sulfuric acid
50% water and 50% sulfuric acid
What happens when the lead plates in a battery are completely coated in lead sulfate?
The battery recharges faster
The battery explodes
The battery is depleted
The battery becomes more efficient
What is the role of an alternator in a car?
To cool the engine
To provide fuel to the engine
To convert mechanical energy into electrical energy
To store electrical energy
What type of current does an alternator produce?
Alternating current (AC)
Static current
Direct current (DC)
Pulsating current
What is the purpose of the diodes in an alternator?
To decrease current
To store energy
To stop the current from alternating
To increase voltage
What is the typical voltage range produced by an alternator?
13.5 to 15 volts
10 to 12 volts
20 to 22 volts
16 to 18 volts
What happens if too much power is pumped into a battery?
The battery charges faster
The battery becomes more efficient
The battery cools down
The battery can fry
What is the function of a voltage regulator in a car's electrical system?
To store excess electricity
To increase the battery's capacity
To determine how much electricity passes to the battery
To convert DC to AC
What is the result of the chemical reactions in a lead-acid battery?
Formation of lead sulfate
Creation of copper oxide
Generation of zinc ions
Production of hydrogen gas
What can happen if a lead-acid battery is not properly vented?
It can freeze
It can lose charge
It can explode
It can overheat
What is the purpose of a descaling or reconditioning mode in some battery chargers?
To change the battery's shape
To decrease the battery's weight
To break up sulfate scaling
To increase the battery's voltage
What is the main reason cars use alternators instead of DC generators?
Alternators are cheaper
Alternators produce more electricity at idle
Alternators are smaller
Alternators are easier to maintain
What is the main component that drives the alternator?
The fuel pump
The battery
The crankshaft
The radiator
