Electricity 2 Flashcards
What is a battery?
A device that converts chemical energy into electrical energy.
Name the two types of cells of a battery?
Primary Cells
Secondary Cells
What would the hydrometer reading be for a fully charged Lead Acid Battery?
1.275 - 1.300
During an installation of a battery into an aircraft, when should the negative terminal be connected?
After the positive
What is “deep cycling” or equalization of a battery?
Removes the memory of a nicad battery
What will a measured discharge test tell the mechanic?
State of Charge
How do you check the state of charge for a lead acid battery?
Measured Discharge Test
What happens to the electrolyte in a lead acid battery during discharge?
More susceptible to freezing
What is used to check specific gravity of a lead acid battery?
Hydrometer
How many volts per cell are in a NiCad Battery?
Between 1.55 & 1.80
How many volts per cell are in a lead acid battery?
2.1
What are two ratings found on aircraft battery?
Voltage & Amp Hour Capacity
What is used to neutralize a NiCad battery’s Electrolyte?
Baking Soda & Water
What is used to neutralize a lead acid battery’s electrolyte?
Bicarbonate / Baking Soda
If batteries are connected in parallel with each other, what increases?
AMPS
What three factors affect the capacitance of a capacitor?
The Size of the Conductor
The Size of the Gap Between Them
The Dielectric
What letter is used to represent capacitance?
C
How does a capacitor store electrical energy?
In the electric field between opposingly charged plates.
Transformers work off of what electrical principle?
Electromagnetic Induction
What happens to inductive reactance if frequency is increased?
Short Circuit