ASA AMT General Oral Exam Questions &
Answers 2025/2026 | FAA A&P Oral & Practical
Prep | Complete Study Guide.
what is the basic unit of voltage
the volt
what is the basic unit of current
the amp
what is the basic unit of resistance
The ohm.
which law of electricity is the most important for an aircraft mechanic to know
Ohm's law
what are the five sources of electrical energy
magnetism chemical energy light heat and pressure
what are the three elements of Ohm's law
voltage current and resistance
what four things affect resistance of an electrical conductor
the material the cross-sectional area the length and the temperature
how can you tell the resistance of a composition resistor
By a series of colored bands around one end of the resistor.
what three things must all electrical circuits contain
a source of electrical energy a load to use the energy and conductors to join the source and the
load
what is the purpose of a capacitor
To store electrical energy in electrostatic fields.
what is the basic unit of capacitance
,The farad.
why should electrolytic capacitors not be use an AC circuit
they are polarized. an electrolytic capacitor will pass current of one polarity but will block the
current of the opposite polarity
what is meant by inductance
The ability to store electrical energy in electromagnetic fields.
what is the basic unit of inductance
The Henry
what is meant by impedance
The total opposition to the flow of alternating current.
how can you find the polarity of electromagnet
hold the electromatic in your left hand with your fingers and circling the coil and the direction
the electrons flow your thumb will point to the North End of the electromagnet
in what units is impedance measured
In ohms
what is the basic unit of electrical power in a DC circuit
The watt.
what is meant by a kilowatt
1,000 watts.
what happens to the current in a DC circuit if the voltage is increased or the resistance Remains
the Same
the current increases
We have an expert-written solution to this problem!
what are the three types of DC circuit's with regard to the placement of the various circuit
components
, series parallel and series parallel
how many cells are there in a 24 volt lead-acid battery
12
what is the specific gravity of the electrolyte in a fully charged lead acid battery
between 1.275 and 1.3
We have an expert-written solution to this problem!
what is the range of temperatures of an electrolyte in a lead acid battery that does not require
that you apply a correction when measuring its specific gravity
between 70 degrees and 90 degrees Fahrenheit
what instrument is used to measure the specific gravity of the electrolyte in a lead acid battery
a hydrometer
how is a lead acid battery compartment treated to protect it from corrosion
paint it with a tar base paint or polyurethane enamel
what is used to neutralize spilled electrolyte from a led acid battery
a solution of bicarbonate of soda and water
how high should the electrolyte level be in a properly serviced led acid battery
only up to the level of the indicator in the cell
what precaution should be taken in maintenance shop for both let acid and nickel cadmium
batteries are serviced
the two types of battery should be kept separate and the tools used on one type should not be
used on the other
why is a hydrometer not used to measure the state of charge of a nickel cadmium battery
the electrolyte of a nickel cadmium battery does not enter into the chemical changes that occur
when the battery is charged or discharged its specific gravity does not change appreciably
what is used to neutralize spilled electrolyte from A nickel cadmium battery
Answers 2025/2026 | FAA A&P Oral & Practical
Prep | Complete Study Guide.
what is the basic unit of voltage
the volt
what is the basic unit of current
the amp
what is the basic unit of resistance
The ohm.
which law of electricity is the most important for an aircraft mechanic to know
Ohm's law
what are the five sources of electrical energy
magnetism chemical energy light heat and pressure
what are the three elements of Ohm's law
voltage current and resistance
what four things affect resistance of an electrical conductor
the material the cross-sectional area the length and the temperature
how can you tell the resistance of a composition resistor
By a series of colored bands around one end of the resistor.
what three things must all electrical circuits contain
a source of electrical energy a load to use the energy and conductors to join the source and the
load
what is the purpose of a capacitor
To store electrical energy in electrostatic fields.
what is the basic unit of capacitance
,The farad.
why should electrolytic capacitors not be use an AC circuit
they are polarized. an electrolytic capacitor will pass current of one polarity but will block the
current of the opposite polarity
what is meant by inductance
The ability to store electrical energy in electromagnetic fields.
what is the basic unit of inductance
The Henry
what is meant by impedance
The total opposition to the flow of alternating current.
how can you find the polarity of electromagnet
hold the electromatic in your left hand with your fingers and circling the coil and the direction
the electrons flow your thumb will point to the North End of the electromagnet
in what units is impedance measured
In ohms
what is the basic unit of electrical power in a DC circuit
The watt.
what is meant by a kilowatt
1,000 watts.
what happens to the current in a DC circuit if the voltage is increased or the resistance Remains
the Same
the current increases
We have an expert-written solution to this problem!
what are the three types of DC circuit's with regard to the placement of the various circuit
components
, series parallel and series parallel
how many cells are there in a 24 volt lead-acid battery
12
what is the specific gravity of the electrolyte in a fully charged lead acid battery
between 1.275 and 1.3
We have an expert-written solution to this problem!
what is the range of temperatures of an electrolyte in a lead acid battery that does not require
that you apply a correction when measuring its specific gravity
between 70 degrees and 90 degrees Fahrenheit
what instrument is used to measure the specific gravity of the electrolyte in a lead acid battery
a hydrometer
how is a lead acid battery compartment treated to protect it from corrosion
paint it with a tar base paint or polyurethane enamel
what is used to neutralize spilled electrolyte from a led acid battery
a solution of bicarbonate of soda and water
how high should the electrolyte level be in a properly serviced led acid battery
only up to the level of the indicator in the cell
what precaution should be taken in maintenance shop for both let acid and nickel cadmium
batteries are serviced
the two types of battery should be kept separate and the tools used on one type should not be
used on the other
why is a hydrometer not used to measure the state of charge of a nickel cadmium battery
the electrolyte of a nickel cadmium battery does not enter into the chemical changes that occur
when the battery is charged or discharged its specific gravity does not change appreciably
what is used to neutralize spilled electrolyte from A nickel cadmium battery
