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Flashcards in Batteries Deck (61)
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1

The definition of a battery

A device that converts chemical energy into electrical energy

2

Which type of battery cells are rechargeable and which aren't?

Primary cell are not rechargeable Secondary cells are rechargable

3

Why are secondary cell batteries called "storage batteries"?

Secondary cells do not produce electrical energy. They store it in chemical form

4

Each cell in a Lead-acid battery produces how much voltage?

2.1V

5

The 2 main purposes for an aircraft battery

1. To provide backup emergency electrical power 2. To provide power for starting an engine

6

Identify

1. Casing

2. Annode

3. Cathode

4. Electrolyte

7

Identify

1. Casing

2. Positive terminal

3. Negative terminal

4. Cel divider

5. Positive electrode (lead dioxide)

6. Negative electrode (lead)

7. Sulfuric acid and water

8

When a primary cell is fully charged, the potential differnce between the two electrodes is approximately

1.5V

9

In a closed circuit, as the transfer of electorns from the postive electrode to the negative electrode continues through the electrolyte, what eventally happens to the negative electrode in a primary cell battery?

It dissovles in the electrolyte

10

Oxidizing is the process of

loosing electrons

11

Identify (carbon-zinc)

1. Metal cap

2. Carbon rod

3. Zinc Case

4. Manganese Dioxide

5. Ammonium chloride

6. Metal bottom

12

The annodic, cathodic and electrolytic materials for an Alkaline battery

1. zinc annode

2. Manganese dioxide cathode

3. Potassium hydroxide electrolyte

13

How can the composition of the electrolyte and electrodes and the chemical energy inside the electrolyte be restored?

Passing a charging current throught the battery in the reverse direction of discharge

14

The capacity of a battery cell is the measure of

How much current the battery can provide for a specific period of time

15

What must the charging voltage be while recharging a secondary cell battery?

Greater than the potential differnce between the electrodes

16

Capacity of a battery is measured in 

Ampere hours

17

The determining factor of the capacity of a battery

Surface area of the electrodes (plates)

18

A cell with a capacity of 80 Ah should produce 

80 amps for 1 hour 

or

40 amps for 2 hours

or

8 amps for 10 hours

19

The 3 ways that battery cells can be connected in 

1. Serries

2. Parallel

3. Series-parallel

20

The total voltage in a battery where the cells are connected in series

The sum of the individual cell voltages

21

Desribe the total voltage and battery capacity of multiple battery cells arranged in series

the voltage will be the sum of the individual cells but the capacity will remain the same 

22

Desribe the total voltage and battery capacity of multiple battery cells arranged in parallel

The total voltage will that of 1 cell, but the capacity will be the sum of the individual cell capacities 

23

If two 12V, 80Ah batteries are connected in series, how will they act?

As a battery with 24 V output, 80 Ah

24

If two 12V, 80Ah batteries are connected in parallel, how will they act?

They will act as one battery with 12V out put, at 160Ah

25

The 2 type of secondary cell batteries used in aviation

1. Lead acid

2. Alkaline

26

The nominal voltage of each cell of a lead acid battery is

2 volts

27

Is the nominal voltage the same as the actual voltage

Most of the time, no buut close enough

28

How are the cells in a lead acid battery arranged?

In series

29

The annode of a lead acid battery is made of

lead peroxide

30

The cathode material in a lead acid battery is made of

spongey lead