Homework - Batteries Flashcards
When a lead-acid battery is discharged, the active material on both positive and negative plates is converted to ______ ______.
Answer 1:
lead sulfate
The white powder that forms on the top of a nickel-cadmium battery that has been in service is ________ _______
Answer 1:
potassium carbonate
The active material on the positive plate of a fully charged lead-acid battery is _____ ________ .
Answer 1:
lead peroxide
The specific gravity of a fully charged lead-acid battery is approximately - .
Answer 1:
1.275
Answer 2:
1.300
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 _____ ______
Answer 1:
deep cycled
During the service of a nickel-cadmium battery, the electrical leakage between the cells and the case should be checked using a __________
Answer 1:
milliammeter
The generating system in an aircraft utilizes the constant ______ method to charge a battery.
Answer 1:
voltage
A battery is a device which changes [ Select ] energy into [ Select ] energy.
Answer 1:
chemical
Answer 2:
electrical
Spilled electrolyte from a lead-acid battery may be neutralized using a solution of _________ ______ and water
Answer 1:
sodium bicarbonate
The specific gravity of the electrolyte in a nickel-cadmium battery ______ ______ change as the state of charge of the battery changes
Answer 1:
does not
If water is added to any cell of a nickel-cadmium battery, the amount and location of the cell should be recorded in the _______ _______ _______
Answer 1:
battery service record
The constant _______ charging method is the most effective method for charging aircraft batteries.
Answer 1:
current
Nickel-cadmium battery installations are required to have ___________ monitoring equipment.
Answer 1:
temperature
The capacity of a battery is its ability to produce a given amount of _______ for a specified time.
Answer 1:
current
A primary cell ____ ____ be recharged
Answer 1:
can not
When removing a battery from an aircraft, you should remove the ______ lead first
Answer 1:
negative
The electrolyte level of a nickel-cadmium battery is _______ immediately after the battery charge is completed.
Answer 1:
highest
The ampere-hour capacity of a lead-acid battery is determined by:
amount of active material
plate surface area
quantity of electroylte
temperature
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
Answer 1:
nickel
Answer 2:
cadmium
The active material on the negative plate of a fully charged lead-acid battery is ______ ______ .
Answer 1:
spongy lead
The electrolyte for a nickel-cadmium battery is _______ ______ and water.
Answer 1:
Potassium Hydroxide
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 ].
Answer 1:
vicious cycling
Answer 2:
thermal runaway
The five-minute discharge rate of a lead-acid battery gives _____ ampere-hours than the five-hour rate?
Answer 1:
less
When installing a battery in an aircraft, you should connect the ______ lead first.
Answer 1:
positive
A nickel-cadmium battery can maintain a nearly constant ______ until it is almost totally discharged.
Answer 1:
voltage
As a nickel-cadmium battery nears completion of its charge, ________ of the cells will occur.
Answer 1:
gassing
The electrolyte of a lead-acid battery is made up of _____ ____ and water.
Answer 1:
sulfuric acid
The open circuit voltage of a lead-acid battery is approximately volts.
Answer 1:
2.1
The most commonly used storage battery in light aircraft is the _____ ____ battery.
Answer 1:
lead - acid
