GENERAL ASA BAKER'S SCHOOL FAA ORAL QUESTIONS AND
CORRECT ANSWERS 100% VERIFIED 2026 UPDATE!!
What is the basic unit of voltage? - (ANSWER)Volt
What is the basic unit of current? - (ANSWER)Amp
What is the basic unit of resistance? - (ANSWER)Ohm
What law of electricity is the most important for an aircraft mechanic to know? - (ANSWER)Ohm's law
What are the 3 elements of Ohm's law? - (ANSWER)volts, amps, resistance
What are five sources of electrical energy? - (ANSWER)magnetism, chemical energy, light, heat, pressure
What four things affect the resistance of an electrical conductor? - (ANSWER)material, cross-sectional
area, length, temperature
How can you tell the resistance of a composition resistor? - (ANSWER)colored bands
What three things must all electrical circuits contain? - (ANSWER)source, load, conductor
What is the purpose of a capacitor? - (ANSWER)It stores electrical energy in electrostatic fields
What is the basic unit of capacitance? - (ANSWER)farad
Why should electrolytic capacitors not be used in AC circuits? - (ANSWER)It is polarized, passing the
current of one polarity while blocking the opposite polarity
What is meant by inductance? - (ANSWER)The ability to store electricity in electromagnetic fields.
,GENERAL ASA BAKER'S SCHOOL FAA ORAL QUESTIONS AND
CORRECT ANSWERS 100% VERIFIED 2026 UPDATE!!
What is the basic unit of inductance? - (ANSWER)henry
What is meant by impedance? - (ANSWER)total opposition to flow of alternating current. It is the sum of
the resistance, capacitive reactance and inductive reactance.
How do you find the polarity of a magnet? - (ANSWER)Hold the magnet in the left hand with the fingers
in the direction of electron flow. Your thumb will point to the north.
In what unit is impedance measured? - (ANSWER)Ohms
What is the basic unit of electrical power in the DC circuit? - (ANSWER)Watt
What is meant by kilowatt? - (ANSWER)1,000 watts
What happens to the current in a DC circuit if the voltage is increased but the resistance stays the same?
- (ANSWER)current increases
What are 3 types of DC circuits? - (ANSWER)series, parallel, series-parallel
How many cells are there in a 24-volt lead acid battery? - (ANSWER)12
What is the specific gravity of the electrolyte in a fully charged lead-acid battery? - (ANSWER)1.275-
1.300
What is the range of temperatures of the electrolyte in a lead acid battery that does not require that you
apply a correction when measuring its specific gravity? - (ANSWER)70-90 degrees Fahrenheit
, GENERAL ASA BAKER'S SCHOOL FAA ORAL QUESTIONS AND
CORRECT ANSWERS 100% VERIFIED 2026 UPDATE!!
What instrument is used to measure the specific gravity of the electrolyte in a lead acid battery? -
(ANSWER)hydrometer
How is a lead acid battery compartment treated to prevent corrosion? - (ANSWER)paint with a tar-
based/asphaltic paint or polyurethane
What is used to neutralize spilled electrolyte from a lead-acid battery? - (ANSWER)baking soda & water
(sodium bicarbonate)
How high should the electrolyte level be in a properly serviced lead-acid battery? - (ANSWER)Only up to
the level of the indicator in the cell (3/8" above plates or up to baffle plate)
What precautions should be taken in a maintenance shop where both lead-acid and nickel-cadmium
batteries are stored? - (ANSWER)They should be kept separate and tools should not be used
interchangeably.
Why is a hydrometer not used to measure the state of charge of a nickel-cadmium battery? -
(ANSWER)Its specific gravity does not change appreciably
What is used to neutralize spilled electrolyte from a nickel-cadmium battery? - (ANSWER)boric acid and
water
What is meant by electromagnetic induction? - (ANSWER)Transferance of electricity between two
conductors that are not connected
How many Ohms are in a megohm? - (ANSWER)1 million (1,000,000)
What part of an amp is a milliamp? - (ANSWER)1 thousandth (.001)
CORRECT ANSWERS 100% VERIFIED 2026 UPDATE!!
What is the basic unit of voltage? - (ANSWER)Volt
What is the basic unit of current? - (ANSWER)Amp
What is the basic unit of resistance? - (ANSWER)Ohm
What law of electricity is the most important for an aircraft mechanic to know? - (ANSWER)Ohm's law
What are the 3 elements of Ohm's law? - (ANSWER)volts, amps, resistance
What are five sources of electrical energy? - (ANSWER)magnetism, chemical energy, light, heat, pressure
What four things affect the resistance of an electrical conductor? - (ANSWER)material, cross-sectional
area, length, temperature
How can you tell the resistance of a composition resistor? - (ANSWER)colored bands
What three things must all electrical circuits contain? - (ANSWER)source, load, conductor
What is the purpose of a capacitor? - (ANSWER)It stores electrical energy in electrostatic fields
What is the basic unit of capacitance? - (ANSWER)farad
Why should electrolytic capacitors not be used in AC circuits? - (ANSWER)It is polarized, passing the
current of one polarity while blocking the opposite polarity
What is meant by inductance? - (ANSWER)The ability to store electricity in electromagnetic fields.
,GENERAL ASA BAKER'S SCHOOL FAA ORAL QUESTIONS AND
CORRECT ANSWERS 100% VERIFIED 2026 UPDATE!!
What is the basic unit of inductance? - (ANSWER)henry
What is meant by impedance? - (ANSWER)total opposition to flow of alternating current. It is the sum of
the resistance, capacitive reactance and inductive reactance.
How do you find the polarity of a magnet? - (ANSWER)Hold the magnet in the left hand with the fingers
in the direction of electron flow. Your thumb will point to the north.
In what unit is impedance measured? - (ANSWER)Ohms
What is the basic unit of electrical power in the DC circuit? - (ANSWER)Watt
What is meant by kilowatt? - (ANSWER)1,000 watts
What happens to the current in a DC circuit if the voltage is increased but the resistance stays the same?
- (ANSWER)current increases
What are 3 types of DC circuits? - (ANSWER)series, parallel, series-parallel
How many cells are there in a 24-volt lead acid battery? - (ANSWER)12
What is the specific gravity of the electrolyte in a fully charged lead-acid battery? - (ANSWER)1.275-
1.300
What is the range of temperatures of the electrolyte in a lead acid battery that does not require that you
apply a correction when measuring its specific gravity? - (ANSWER)70-90 degrees Fahrenheit
, GENERAL ASA BAKER'S SCHOOL FAA ORAL QUESTIONS AND
CORRECT ANSWERS 100% VERIFIED 2026 UPDATE!!
What instrument is used to measure the specific gravity of the electrolyte in a lead acid battery? -
(ANSWER)hydrometer
How is a lead acid battery compartment treated to prevent corrosion? - (ANSWER)paint with a tar-
based/asphaltic paint or polyurethane
What is used to neutralize spilled electrolyte from a lead-acid battery? - (ANSWER)baking soda & water
(sodium bicarbonate)
How high should the electrolyte level be in a properly serviced lead-acid battery? - (ANSWER)Only up to
the level of the indicator in the cell (3/8" above plates or up to baffle plate)
What precautions should be taken in a maintenance shop where both lead-acid and nickel-cadmium
batteries are stored? - (ANSWER)They should be kept separate and tools should not be used
interchangeably.
Why is a hydrometer not used to measure the state of charge of a nickel-cadmium battery? -
(ANSWER)Its specific gravity does not change appreciably
What is used to neutralize spilled electrolyte from a nickel-cadmium battery? - (ANSWER)boric acid and
water
What is meant by electromagnetic induction? - (ANSWER)Transferance of electricity between two
conductors that are not connected
How many Ohms are in a megohm? - (ANSWER)1 million (1,000,000)
What part of an amp is a milliamp? - (ANSWER)1 thousandth (.001)
