DC Electrics - Batteries Quiz

What is the purpose of a battery in an aircraft?

• To provide an emergency source of power

• To store fuel

• To cool the engine

• To provide lighting

What does a primary cell consist of?

• Two electrodes immersed in an electrolyte

• A single electrode

• A chemical reaction without electrodes

• A battery pack

What happens when the electron transfer ceases in a primary cell?

• The cell is fully charged

• The cell is recharged

• The cell is discarded

• The cell continues to work

What is the capacity of a cell measured in?

• Ampere hours (Ah)

• Volts

• Watts

• Ohms

What is the theoretical current a cell with a capacity of 80 Ah should provide?

• 8 A for 10 hours

• 80 A for 1 hour

• 4 A for 20 hours

• 16 A for 5 hours

What is the capacity of a single cell battery when used on its own?

How is the total voltage calculated for cells in series?

What happens to the specific gravity (SG) of a lead acid cell when it is discharged?

What is the SG of a fully charged lead acid cell?

What is the off load voltage of each cell of a lead acid battery?

• 2 volts

• 2.2 volts