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WorksheetsFAA General-Battery
Total questions: 19
Worksheet time: 10mins
If electrolyte from a lead-acid battery is spilled in the battery compartment, which procedure should be followed?
Apply boric acid solution to the affected area followed by a water rinse.
Rinse the affected area thoroughly with clean water.
Apply sodium bicarbonate solution to the affected area followed by a water rinse.
Which statement regarding the hydrometer reading of a lead-acid storage battery electrolyte is true?
The hydrometer reading does not require a temperature correction if the electrolyte temperature is 80°F.
A specific gravity correction should be added to the hydrometer reading if the electrolyte temperature is below 59°F.
The hydrometer reading will give a true indication of the capacity of the battery regardless of the electrolyte temperature.
A fully charged lead-acid battery will not freeze until extremely low temperatures are reached because
the acid is in the plates, thereby increasing the specific gravity of the solution.
most of the acid is in the solution.
increased internal resistance generates sufficient heat to prevent freezing.
What determines the amount of current which will flow through a battery while it is being charged by a constant voltage source?
The total plate area of the battery.
The state-of-charge of the battery.
The ampere-hour capacity of the battery.
The method used to rapidly charge a nickel-cadmium battery utilizes
constant current and constant voltage.
constant current and varying voltage.
constant voltage and varying current.
The purpose of providing a space underneath the plates in a lead-acid battery’s cell container is to
prevent sediment buildup from contacting the plates and causing a short circuit.
allow for convection of the electrolyte in order to provide for cooling of the plates.
ensure that the electrolyte quantity ratio to the number of plates and plate area is adequate.
Which condition is an indication of improperly torqued cell link connections of a nickel-cadmium battery?
Light spewing at the cell caps.
Toxic and corrosive deposits of potassium carbonate crystals.
Heat or burn marks on the hardware.
The presence of any small amount of potassium carbonate deposits on the top of nickel-cadmium battery cells in service is an indication of
normal operation.
excessive gassing.
plate sulfation.
What is the likely result, if any, of servicing and charging nickel-cadmium and lead-acid batteries together in the same service area?
The electrolytes in each battery are the same, so there are no significant differences.
The nickel-cadmium would not be affected, but the lead-acid battery could become contaminated.
Contamination of both types of batteries would occur.
Which of the following best describes the operating principle in a nickel-cadmium battery installed in an aircraft?
At full charge, the electrolyte will be at its lowest level and should be filled.
To completely charge a nickel-cadmium battery, some gassing must take place; thus, some water will be used.
When positive plates slowly give up oxygen, which is regained by the negative plates, the battery is charging.
The electrolyte of a nickel-cadmium battery is the lowest when the battery is
being charged.
in a discharged condition.
under a heavy load condition.
The electrolyte of a nickel-cadmium battery is highest when the battery is
in a fully charged condition.
in a discharged condition.
under a no-load condition.
The end-of-charge voltage of a 19-cell nickel-cadmium battery, measured while still on charge,
must be 1.2 to 1.3 volts per cell.
must be 1.4 volts per cell.
depends upon its temperature and the method used for charging.
During discharge, nickel-cadmium batteries will show a lower liquid level than when at full charge because
A—a chemical action causes the electrolyte to evaporate through the vents.
B—current leakage from individual cells causes a rise in temperature.
C—the electrolyte becomes absorbed into the plates.
How can the state-of-charge of a nickel-cadmium battery be determined?
By measuring the specific gravity of the electrolyte.
By a measured discharge.
By the level of the electrolyte.
What may result if water is added to a nickel-cadmium battery when it is not fully charged?
Excessive electrolyte dilution.
Excessive spewing is likely to occur during the charging cycle.
No adverse effects since water may be added anytime.
In nickel-cadmium batteries, a rise in cell temperature
causes an increase in internal resistance.
causes a decrease in internal resistance.
increases cell voltage.
Which of the following best describes the contributing factors to thermal runaway in a nickel-cadmium battery installed in an aircraft?
High internal resistance intensified by high cell temperatures and a high current discharge/charge rate in a constant potential (voltage) charging system.
Low internal resistance intensified by high cell temperatures and a high voltage discharge/charge rate in a constant current charging system.
Low internal resistance intensified by high cell temperatures and a high current discharge/charge rate in a constant potential (voltage) charging system.
When a charging current is applied to a nickel-cadmium battery, the cells emit gas
A—toward the end of the charging cycle.
B—throughout the charging cycle.
C—especially if the electrolyte level is high.
