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_______ decreases at 1''Hg per 1,000 foot increase in altitude. A, Barometric pressure B, Density pressure C, True altitude D, Measured pressure altitude ✔✔Barometric Pressure What are the standard temperature and pressure values for sea level? A, 59 degrees C and 1013.2 millibars B, 15 degrees F and 29.92" Hg. C, 59 degrees C and 29.92" Hg. D, 0 degrees C and 1013.2 millibars E, 15 degrees C and 29.92" Hg. ✔✔E, 15 degrees C and "29.92" Hg. Pressure altitude corrects for the difference between _______ and standard pressure. A, humidity B, density altitude C, barometric pressure
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_______ decreases at 1''Hg per 1,000 foot increase in altitude.
A, Barometric pressure
B, Density pressure
C, True altitude
D, Measured pressure altitude ✔✔Barometric Pressure
What are the standard temperature and pressure values for sea level?
A, 59 degrees C and 1013.2 millibars
B, 15 degrees F and 29.92" Hg.
C, 59 degrees C and 29.92" Hg.
D, 0 degrees C and 1013.2 millibars
E, 15 degrees C and 29.92" Hg. ✔✔E, 15 degrees C and "29.92" Hg.
Pressure altitude corrects for the difference between _______ and standard pressure.
A, humidity
B, density altitude
C, barometric pressure
A, Low temperature, low relative humidity, and low density altitude
B, High temperature, low relative humidity, and low density altitude
C, High temperature, high relative humidity, and high density altitude
D, Low temperature, high relative humidity, and high density altitude ✔✔C, High temperature, high relative humidity, and high density altitude
Which formula is used for calculating density altitude?
A, mass ÷ volume
C, (29.92 - Barometric Pressure) 1,000 + Elevation
D, 15 - (2 ÷ 1,000 x PA) ✔✔B, PA + [120 (OAT ‒ ISA)
The "standard day" serves as a universal baseline for measuring _______.
A, atmospheric pressure
B, barometric temperature
C, density altitude
D, ground roll ✔✔A, atmospheric pressure
Density Altitude is _________ corrected for non-standard temperature.
D, 2C per and 1" Hg per 1000 feet
E, 2F per and 1" Hg per 100 feet ✔✔D, 2C per and 1" Hg per 1000 feet
What is the Leading Edge?
A, is where the airflow separated by the leading edge rejoins.
B, is the part of the wing that first contacts the air
C, the curvature of the lower surface of an airfoil.
D, a line connecting the leading and trailing edges of an airfoil
E, the curvature of the upper surface of an airfoil.
F, the angle between the chord line and the relative wind. ✔✔B, is the part of the wing that first contacts the air
What is the trailing edge?
A, is where the airflow separated by the leading edge rejoins.
B, is the part of the wing that first contacts the air
C, the curvature of the lower surface of an airfoil.
D, a line connecting the leading and trailing edges of an airfoil
E, the curvature of the upper surface of an airfoil.
What is the Lower Cambarge.
A, is where the airflow separated by the leading edge rejoins.
B, is the part of the wing that first contacts the air
C, the curvature of the lower surface of an airfoil.
D, a line connecting the leading and trailing edges of an airfoil
E, the curvature of the upper surface of an airfoil.
F, the angle between the chord line and the relative wind ✔✔C, the curvature of the lower surface of an airfoil.
What is the Cord Line?
A, is where the airflow separated by the leading edge rejoins.
B, is the part of the wing that first contacts the air
C, the curvature of the lower surface of an airfoil.
D, a line connecting the leading and trailing edges of an airfoil
E, the curvature of the upper surface of an airfoil.
F, the angle between the chord line and the relative wind ✔✔D, a line connecting the leading and trailing edges of an airfoil.
What is the Angle of Attack?
B, directly proportional
C, inversely proportional
D, unrelated ✔✔B, directly proportional
Millibars (mb) is a unit of measurement for _______.
A, air temperature
B, atmospheric pressure
C, density
D, fluid friction ✔✔B, atmospheric pressure
Which of the following are factors that affect air density?
Select all that apply.
A, Humidity
B, Pressure
C, Viscosity
D, Friction
E, Temperature ✔✔A, Humidity. B, Pressure. E, Temperature.
Which if the following is a good formula for calculating the density of a substance?
C, Increase Weight
D, Produce Thrust
E, Run the Engine ✔✔B, Produce Lift. D, Produce Thrust. E, Run the Engine.
True or False the relative Humidity makes a bigger difference in the performance of an airplane than the Pressure in the atmosphere surrounding the airplane.
A, True
B, False ✔✔B, False
When an object moves through a fluid, which of the following will affect fluid friction?
Select all that apply.
A, The fluid's color
B, The fluid's viscosity
C, The speed of the object
D, The object's density
E, The shape of the object ✔✔B, The fluid's viscosity. C, The speed of the object. E, The shape of the object.
An airfoil's movement through air is similar to _______.
A, a moving freight train
A, avoid a moving object
B, move below an airplane's wing
C, attach to a convex surface
D, go around a wing or rotor ✔✔C, attach to a convex surface
Viscosity is a fluid's resistance to _______.
A, friction
B, light
C, flow
D, heat ✔✔C, Flow
Which statement is true about an object moving through a fluid?
A, Viscosity changes according to the size of the object.
B, The object moves faster if the fluid is more viscous.
C, Fluid friction increases as the object's velocity increases.
D, Less viscosity means more fluid friction. ✔✔C, Fluid friction increases as the object's velocity increases.
The Magnus Effect occurs because __________ drags the air around it.
