A&P General Oral Exam (Jeppesen) 2026-2027
Questions And Answers Graded A+
What term defines the temperature at which all molecular motion ceases?
Absolute zero.
Can liquids be compressed?
No, liquids are generally considered incompressible.
What are the customary units used to express hydraulic or pneumatic pressure in
the U.S.?
Pounds per square inch
Describe how pressure is transmitted when a force is applied to a confined liquid.
Pressure is transmitted equally in all directions.
What formula expressed the relationship between force, pressure and area?
Force equals area times pressure.
What is the approximate speed of sound at sea level on a standard day?
661 knots or 340 meters per second.
,What is the atmospheric pressure at sea level on a standard day?
29.92 inches of Mercury or 1013.2 millibars.
On a standard day at sea level, what is the value for temperature?
59 deg. F or 15 deg. C
What are the factors that determine density altitude?
Temperature and atmospheric pressure.
What is the term to describe the ratio between the amount of moisture actually
present in the atmosphere as compared to the amount the air could hold if it were
completely saturated?
Relative humidity.
What are the four principle forces acting on an airplane in flight?
Lift, drag, thrust, and gravity.
What is the term that describes the angle between the relative wind and the chord
line of airfoil?
,The Angle of Attack (AOA).
What are the factors that cause the airplane wing to stall?
Stall is caused when the angle of attack exceeds a critical value and the airflow
separates from the upper surface and becomes turbulent.
What are the principle effects that result from lowering the flaps while in flight?
Lift increases, drag increases, and stall speed decreases.
What is the function of a wing mounted vortex generator?
Vortex generators delay or keep the airflow from separating from the upper surface
of a wing during high speed flight.
How does blade flapping help to compensate for dissymmetry of lift in helicopter
main rotor systems?
Flapping increases the angle of attack and lift on the retreating blade and decreases
the angle of attack and lift on the advancing blade.
How does the airflow through the main rotor of a helicopter change during the
transition from normal flight to autorotation?
During normal flight the air moves downward and during autorotation the air
moves upward.
, What is friction?
The opposition to relative motion between two objects in contact with each other.
One kilowatt is equal to how many watts?
1,000 watts
What law describes the most fundamental or basic relationship in an electrical
circuit?
Ohm's law
What are the three elements of Ohm's law?
Voltage, current, and resistance.
How would you write the Ohms law as an equation?
E=I x R, R = E/I, or I= E/R
If the resistance in a DC circuit remains the same but the voltage doubles, what
happens to the amount of current flowing in the circuit?
It also doubles.
Questions And Answers Graded A+
What term defines the temperature at which all molecular motion ceases?
Absolute zero.
Can liquids be compressed?
No, liquids are generally considered incompressible.
What are the customary units used to express hydraulic or pneumatic pressure in
the U.S.?
Pounds per square inch
Describe how pressure is transmitted when a force is applied to a confined liquid.
Pressure is transmitted equally in all directions.
What formula expressed the relationship between force, pressure and area?
Force equals area times pressure.
What is the approximate speed of sound at sea level on a standard day?
661 knots or 340 meters per second.
,What is the atmospheric pressure at sea level on a standard day?
29.92 inches of Mercury or 1013.2 millibars.
On a standard day at sea level, what is the value for temperature?
59 deg. F or 15 deg. C
What are the factors that determine density altitude?
Temperature and atmospheric pressure.
What is the term to describe the ratio between the amount of moisture actually
present in the atmosphere as compared to the amount the air could hold if it were
completely saturated?
Relative humidity.
What are the four principle forces acting on an airplane in flight?
Lift, drag, thrust, and gravity.
What is the term that describes the angle between the relative wind and the chord
line of airfoil?
,The Angle of Attack (AOA).
What are the factors that cause the airplane wing to stall?
Stall is caused when the angle of attack exceeds a critical value and the airflow
separates from the upper surface and becomes turbulent.
What are the principle effects that result from lowering the flaps while in flight?
Lift increases, drag increases, and stall speed decreases.
What is the function of a wing mounted vortex generator?
Vortex generators delay or keep the airflow from separating from the upper surface
of a wing during high speed flight.
How does blade flapping help to compensate for dissymmetry of lift in helicopter
main rotor systems?
Flapping increases the angle of attack and lift on the retreating blade and decreases
the angle of attack and lift on the advancing blade.
How does the airflow through the main rotor of a helicopter change during the
transition from normal flight to autorotation?
During normal flight the air moves downward and during autorotation the air
moves upward.
, What is friction?
The opposition to relative motion between two objects in contact with each other.
One kilowatt is equal to how many watts?
1,000 watts
What law describes the most fundamental or basic relationship in an electrical
circuit?
Ohm's law
What are the three elements of Ohm's law?
Voltage, current, and resistance.
How would you write the Ohms law as an equation?
E=I x R, R = E/I, or I= E/R
If the resistance in a DC circuit remains the same but the voltage doubles, what
happens to the amount of current flowing in the circuit?
It also doubles.
