Homework - Batteries Flashcards

1
Q

When a lead-acid battery is discharged, the active material on both positive and negative plates is converted to ______ ______.

A

Answer 1:
lead sulfate

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2
Q

The white powder that forms on the top of a nickel-cadmium battery that has been in service is ________ _______

A

Answer 1:
potassium carbonate

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3
Q

The active material on the positive plate of a fully charged lead-acid battery is _____ ________ .

A

Answer 1:
lead peroxide

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4
Q

The specific gravity of a fully charged lead-acid battery is approximately - .

A

Answer 1:
1.275
Answer 2:
1.300

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5
Q

If the capacity of a nickel-cadmium battery is less than it should be, or if there is an indication that some of the cells are unbalanced, the battery should be _____ ______

A

Answer 1:
deep cycled

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6
Q

During the service of a nickel-cadmium battery, the electrical leakage between the cells and the case should be checked using a __________

A

Answer 1:
milliammeter

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7
Q

The generating system in an aircraft utilizes the constant ______ method to charge a battery.

A

Answer 1:
voltage

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8
Q

A battery is a device which changes [ Select ] energy into [ Select ] energy.

A

Answer 1:
chemical
Answer 2:
electrical

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9
Q

Spilled electrolyte from a lead-acid battery may be neutralized using a solution of _________ ______ and water

A

Answer 1:
sodium bicarbonate

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10
Q

The specific gravity of the electrolyte in a nickel-cadmium battery ______ ______ change as the state of charge of the battery changes

A

Answer 1:
does not

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11
Q

If water is added to any cell of a nickel-cadmium battery, the amount and location of the cell should be recorded in the _______ _______ _______

A

Answer 1:
battery service record

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12
Q

The constant _______ charging method is the most effective method for charging aircraft batteries.

A

Answer 1:
current

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13
Q

Nickel-cadmium battery installations are required to have ___________ monitoring equipment.

A

Answer 1:
temperature

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14
Q

The capacity of a battery is its ability to produce a given amount of _______ for a specified time.

A

Answer 1:
current

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15
Q

A primary cell ____ ____ be recharged

A

Answer 1:
can not

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16
Q

When removing a battery from an aircraft, you should remove the ______ lead first

A

Answer 1:
negative

17
Q

The electrolyte level of a nickel-cadmium battery is _______ immediately after the battery charge is completed.

A

Answer 1:
highest

18
Q

The ampere-hour capacity of a lead-acid battery is determined by:

A

amount of active material
plate surface area
quantity of electroylte
temperature

19
Q

Both the positive and the negative plates of a nickel-cadmium cell are made of powered nickel plaque, fused to a nickel screen.

a. the positive plates are impregnated with [ Select ] [“nickel”, “cadmium”, “sulfuric acid”, “lead”] hydroxide

b. the negative plates are impregnated with [ Select ] [“nickel”, “lead”, “cadmium”, “sulfuric acid”] hydroxide

A

Answer 1:
nickel
Answer 2:
cadmium

20
Q

The active material on the negative plate of a fully charged lead-acid battery is ______ ______ .

A

Answer 1:
spongy lead

21
Q

The electrolyte for a nickel-cadmium battery is _______ ______ and water.

A

Answer 1:
Potassium Hydroxide

22
Q

High charging currents in nickel-cadmium batteries may cause a breakdown of the cellophane-like cell separator material, resulting in a condition known as [ Select ] or [ Select ].

A

Answer 1:
vicious cycling
Answer 2:
thermal runaway

23
Q

The five-minute discharge rate of a lead-acid battery gives _____ ampere-hours than the five-hour rate?

A

Answer 1:
less

24
Q

When installing a battery in an aircraft, you should connect the ______ lead first.

A

Answer 1:
positive

25
Q

A nickel-cadmium battery can maintain a nearly constant ______ until it is almost totally discharged.

A

Answer 1:
voltage

26
Q

As a nickel-cadmium battery nears completion of its charge, ________ of the cells will occur.

A

Answer 1:
gassing

27
Q

The electrolyte of a lead-acid battery is made up of _____ ____ and water.

A

Answer 1:
sulfuric acid

28
Q

The open circuit voltage of a lead-acid battery is approximately volts.

A

Answer 1:
2.1

29
Q

The most commonly used storage battery in light aircraft is the _____ ____ battery.

A

Answer 1:
lead - acid