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Exam (elaborations)

AT 116 EXAM LATEST UPDATED

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  • AT 116
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  • AT 116

AT 116 EXAM LATEST UPDATED...

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  • September 17, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
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  • AT 116
  • AT 116
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AT 116 EXAM LATEST UPDATED

Which is true concerning the density of the air?
a. Air is less dense when there is high humidity
b. Air is more dense when there is high humidity
c. Density stays the same - ANSWER a.

Which is true concerning the density of the air?
a. The air density (air pressure) at 18,000 feet is about 1/2 of the density at sea
level
b. The air density (air pressure) at 34,000 feet is about 1/2 of the density at sea
level
c. The air density (air pressure) at 63,000 feet is about 1/2 of the density at sea
level - ANSWER a.

Which is true concerning the density of the air?
a. Air is less dense when the air is cold
b. Air is more dense when the air is cold
c. Density stays the same regardless of air temperature - ANSWER b.

Which is true of air temperature?
a. Air temperature falls at a constant rate until 18,000 feet, and then air
temperature decreases faster as you continue up in altitude.
b. Air temperature falls at a constant rate until 36,000 feet, and then air
temperature decreases faster as you continue up in altitude.
c. Air temperature falls at a constant rate until 36,000 feet, and then air
temperature remains constant as you continue up in altitude. - ANSWER c.

Which of the following factors for a standard day atmospheric condition is
wrong?
a. 70 degrees F
b. Sea level altitude
c. Zero humidity
d. 41 degrees north latitude - ANSWER a.

True or False: Life is greater when the air has more mass - ANSWER True

, True or False: Lift is greatest on cool, dry days, at low altitude - ANSWER True

True or False: Water molecules in the air have greater mass than oxygen or
nitrogen molecules - ANSWER False

True or False: Static pressure comes from air molecules moving at high speed in
a straight line running into the wing, much like what you feel when you put
your hand out the car window and the air hits your hand - ANSWER False

True or False: It is the density or mass of the static, non-moving air randomly
vibrating against the bottom of the wing that causes differences in the amount of
lift due to humidity, temperature, and density. - ANSWER True

What happens to static pressure in a tube when the area of the tube decreases?
a. decreases
b. increases
c. stays the same - ANSWER a.

What happens to air velocity in a tube when the area of the tube decreases?
a. decreases
b. increases
c. stays the same - ANSWER b.

The narrowing of the area of a tube is called what?
a. A narrow point of the tube
b. Differentiator
c. Venturi - ANSWER c.

Which of the following statements is true?
a. static pressure- dynamic pressure = total pressure
b. static pressure/ dynamic pressure= total pressure
c. static pressure + dynamic pressure = total pressure - ANSWER c.

Bernoulli's Principle says?
a. The static pressure of a fluid decreases as the speed of the fluid increases
b. The static pressure of a fluid decreases as the speed of the fluid decreases
c. The static pressure of a fluid decreases as the speed of the fluid remains the
same - ANSWER a.

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