BAKERS SCHOOL OF AERONAUTICS ORAL PREP QUESTIONS AND ANSWERS 2025
What is the most important law applicable to the study of electricity? - (ANSWER)Ohm's Law
What are the elements of Ohm's Law? - (ANSWER)Voltage, Current & Resistance
What are four sources of electrical power? - (ANSWER)Mechanical, chemical, photoelectric and thermal
What does an electrical circuit consist of? - (ANSWER)1. a source of electrical pressure
2. resistance
3. conductors
What represents capacitance in an AC circuit? - (ANSWER)a capacitor
What is the function of a capacitor? - (ANSWER)to store electricity
What is the unit of measure for capacitance? - (ANSWER)Farad
What is inductance? - (ANSWER)When voltage is induced by magnetic flux
What is an example of an inductor in a magneto? - (ANSWER)the coil
What is impedance? - (ANSWER)total opposition for AC to flow
What is the unit of measurement for impedance? - (ANSWER)Ohms
What are two things that happen when current flows through a conductor? - (ANSWER)a magnetic field;
heats up
,BAKERS SCHOOL OF AERONAUTICS ORAL PREP QUESTIONS AND ANSWERS 2025
What are the four factors that affect the resistance of an electrical conductor? - (ANSWER)gauge, length,
temperature and material
What is the unit of measurement of power in a DC circuit? - (ANSWER)watt
What is a kilowatt? - (ANSWER)1,000 watts
In a DC circuit, what occurs when voltage is increased while resistance remains constant? -
(ANSWER)increase in current
What are the three types of DC electrical circuits? - (ANSWER)series, parallel, and complex
A 24 volt lead-acid battery has how many cells? - (ANSWER)12 cells. Each rated at 2 volts.
What are the units that battery capacity are measured in? - (ANSWER)Ampere-hours
What should be the specific gravity of the electrolyte in a fully charge lead acid battery? -
(ANSWER)between 1,275 and 1,300
What instrument is used to determine the specific gravity of electrolyte in a lead acid battery? -
(ANSWER)a hydrometer
Why can a hydrometer NOT be used to determine the charge of a nickel-cadmium battery? -
(ANSWER)Specific gravity of the electrolyte in a nickel-cadmium battery does not change appreciably
When using a hydrometer to check the charge of a lead-acid battery, at what temperatures must a
correction factor be applied to the reading? - (ANSWER)above 90F or below 70F
What is the electromagnetic induction? - (ANSWER)transfer of electrical energy by means of a magnetic
field
,BAKERS SCHOOL OF AERONAUTICS ORAL PREP QUESTIONS AND ANSWERS 2025
How are battery compartments protected against corrosion? - (ANSWER)coated with special corrosion
resistant paint
What should be the correct electrolyte level in a properly serviced battery? - (ANSWER)3/8 inches above
the plates
What are paralleling generators and how is the load distributed? - (ANSWER)when two or more
generators are operated at the same time; must be shared equality
Describe a no-trip circuit breaker (trip free). - (ANSWER)makes it impossible to manually hold the circuit
closed
Can you store Ni-cad and Lead-acid batteries together? - (ANSWER)has a low internal resistance, the
current will increase, causing it to heat up
What type of lines are used on aircraft drawings to indicate hidden views, center lines, and alternate
position lines? - (ANSWER)a hidden view line is medium width and made up of short dashes. represents
and edge that cannot be seen
center lines are thin and made up of alternating long and short dashes. used to indicate the center.
alternate position lines are medium width and made up of one long and two short evenly spaced
dashes. used to show the alternate position of apart.
What is a sketch for a repair? - (ANSWER)It is a basic drawing that shows specific information and
provides minimum detail needed to manufacture a part.
What type of drawing is most helpful in troubleshooting a system? - (ANSWER)A schematic
Define "tolerance" as used in aircraft drawings. - (ANSWER)the difference between the plus and minus
allowable dimension.
, BAKERS SCHOOL OF AERONAUTICS ORAL PREP QUESTIONS AND ANSWERS 2025
Define "clearance" as used in aircraft drawings. - (ANSWER)dimension given for the space.
What is a fuselage station number? - (ANSWER)distance from the datum.
What information is given in the title block of a blueprint? - (ANSWER)number, name, scale, date, firm,
draftsman, checker and approving official.
Where is the title block usually found on an aircraft drawing? - (ANSWER)lower right corner
Why are the dimensions used, and how are they shown on the aircraft drawings? - (ANSWER)solid
narrow lines, broken at midpoint. indicate the size.
How can a change to an aircraft drawing be identified? - (ANSWER)revision letter
What is the "bill of materials" associated with aircraft blueprint? - (ANSWER)list of materials and parts
for fabrication or assembly.
Why are symbols used when drawing aircraft blueprints? - (ANSWER)shorthand used in drawings.
How many views are required to determine the shape of an object? - (ANSWER)front, top and right side.
What is the datum and its purpose when making weight and balance computations? -
(ANSWER)imaginary vertical lines from all measurements are taken and to determine the relative
location of items in the aircraft.
What is the purpose of weight and balance control? - (ANSWER)for safety and efficiency in flight.
When computing weight and balance, what is the 'movement' and how is it obtained? -
(ANSWER)moment is a force which tends to rotate the aircraft. multiplying the weight by the distance
from the datum.
What is the most important law applicable to the study of electricity? - (ANSWER)Ohm's Law
What are the elements of Ohm's Law? - (ANSWER)Voltage, Current & Resistance
What are four sources of electrical power? - (ANSWER)Mechanical, chemical, photoelectric and thermal
What does an electrical circuit consist of? - (ANSWER)1. a source of electrical pressure
2. resistance
3. conductors
What represents capacitance in an AC circuit? - (ANSWER)a capacitor
What is the function of a capacitor? - (ANSWER)to store electricity
What is the unit of measure for capacitance? - (ANSWER)Farad
What is inductance? - (ANSWER)When voltage is induced by magnetic flux
What is an example of an inductor in a magneto? - (ANSWER)the coil
What is impedance? - (ANSWER)total opposition for AC to flow
What is the unit of measurement for impedance? - (ANSWER)Ohms
What are two things that happen when current flows through a conductor? - (ANSWER)a magnetic field;
heats up
,BAKERS SCHOOL OF AERONAUTICS ORAL PREP QUESTIONS AND ANSWERS 2025
What are the four factors that affect the resistance of an electrical conductor? - (ANSWER)gauge, length,
temperature and material
What is the unit of measurement of power in a DC circuit? - (ANSWER)watt
What is a kilowatt? - (ANSWER)1,000 watts
In a DC circuit, what occurs when voltage is increased while resistance remains constant? -
(ANSWER)increase in current
What are the three types of DC electrical circuits? - (ANSWER)series, parallel, and complex
A 24 volt lead-acid battery has how many cells? - (ANSWER)12 cells. Each rated at 2 volts.
What are the units that battery capacity are measured in? - (ANSWER)Ampere-hours
What should be the specific gravity of the electrolyte in a fully charge lead acid battery? -
(ANSWER)between 1,275 and 1,300
What instrument is used to determine the specific gravity of electrolyte in a lead acid battery? -
(ANSWER)a hydrometer
Why can a hydrometer NOT be used to determine the charge of a nickel-cadmium battery? -
(ANSWER)Specific gravity of the electrolyte in a nickel-cadmium battery does not change appreciably
When using a hydrometer to check the charge of a lead-acid battery, at what temperatures must a
correction factor be applied to the reading? - (ANSWER)above 90F or below 70F
What is the electromagnetic induction? - (ANSWER)transfer of electrical energy by means of a magnetic
field
,BAKERS SCHOOL OF AERONAUTICS ORAL PREP QUESTIONS AND ANSWERS 2025
How are battery compartments protected against corrosion? - (ANSWER)coated with special corrosion
resistant paint
What should be the correct electrolyte level in a properly serviced battery? - (ANSWER)3/8 inches above
the plates
What are paralleling generators and how is the load distributed? - (ANSWER)when two or more
generators are operated at the same time; must be shared equality
Describe a no-trip circuit breaker (trip free). - (ANSWER)makes it impossible to manually hold the circuit
closed
Can you store Ni-cad and Lead-acid batteries together? - (ANSWER)has a low internal resistance, the
current will increase, causing it to heat up
What type of lines are used on aircraft drawings to indicate hidden views, center lines, and alternate
position lines? - (ANSWER)a hidden view line is medium width and made up of short dashes. represents
and edge that cannot be seen
center lines are thin and made up of alternating long and short dashes. used to indicate the center.
alternate position lines are medium width and made up of one long and two short evenly spaced
dashes. used to show the alternate position of apart.
What is a sketch for a repair? - (ANSWER)It is a basic drawing that shows specific information and
provides minimum detail needed to manufacture a part.
What type of drawing is most helpful in troubleshooting a system? - (ANSWER)A schematic
Define "tolerance" as used in aircraft drawings. - (ANSWER)the difference between the plus and minus
allowable dimension.
, BAKERS SCHOOL OF AERONAUTICS ORAL PREP QUESTIONS AND ANSWERS 2025
Define "clearance" as used in aircraft drawings. - (ANSWER)dimension given for the space.
What is a fuselage station number? - (ANSWER)distance from the datum.
What information is given in the title block of a blueprint? - (ANSWER)number, name, scale, date, firm,
draftsman, checker and approving official.
Where is the title block usually found on an aircraft drawing? - (ANSWER)lower right corner
Why are the dimensions used, and how are they shown on the aircraft drawings? - (ANSWER)solid
narrow lines, broken at midpoint. indicate the size.
How can a change to an aircraft drawing be identified? - (ANSWER)revision letter
What is the "bill of materials" associated with aircraft blueprint? - (ANSWER)list of materials and parts
for fabrication or assembly.
Why are symbols used when drawing aircraft blueprints? - (ANSWER)shorthand used in drawings.
How many views are required to determine the shape of an object? - (ANSWER)front, top and right side.
What is the datum and its purpose when making weight and balance computations? -
(ANSWER)imaginary vertical lines from all measurements are taken and to determine the relative
location of items in the aircraft.
What is the purpose of weight and balance control? - (ANSWER)for safety and efficiency in flight.
When computing weight and balance, what is the 'movement' and how is it obtained? -
(ANSWER)moment is a force which tends to rotate the aircraft. multiplying the weight by the distance
from the datum.
