11/15/2024 10:19 PM
General aviation test Questions And Answers
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Describe the result of adding a large positive number and a smaller negative number. -
answer✔smaller positive number, same as ignoring the signs and subtracting the smaller
number from the larger
how do you convert a fraction into a decimal? - answer✔divide numerator by denominator
What is the key step that must be performed in order to add or subtract unlike fractions? -
answer✔find the least common denominator
how do you divide one fraction by another? - answer✔invert the divisor and multiply
numerators together and denominators together
how can you convert a decimal into a percent? - answer✔multiply by 100 and add the %
sign or move the decimal two places to the right and add the % sign
how do you convert a fraction into a percent ? - answer✔convert it to a decimal, move the
decimal point to places to the right and add the % sign
How do you change a decimal into the nearest equivalent fraction? - answer✔multiply the
decimal by the desired denominator. The result becomes the numerator in the fraction
what are two different ways that a ratio may be expressed? - answer✔as a fraction, by
placing a colon between the two numbers, by using the word to between the two numbers
what is a proportion? - answer✔statement of equality between two or more ratios
what is meant by the root of a number? - answer✔two or more equal smaller numbers that
when multiplied together equal a specified number
how do you find the square of a number? - answer✔multiply the number by itself
what is a common method of making computations involving very large or very small
numbers more manageable? - answer✔convert the numbers into scientific notation by
using powers of 10
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how is 100,000 expressed as a power of 10? - answer✔105 (10 to the 5th power)
what formula is used to find the area of a rectangle and of a triangle? - answer✔rectangle-
A=L x W triangle A=1/2 (B x H)
define pi - answer✔a constant, expresses the relationship between the circumference of a
circle and its diameter. 3.1416 approx
describe a trapezoid - answer✔closed four sided figure - 2 parallel sides and 2 not parallel
sides
what is the formula for computing the area of a circle? - answer✔A=πr2
define matter - answer✔any substance that occupies space and has mass
matter may exist in what three states? - answer✔solid, liquid, gas
define kinetic energy - answer✔energy of motion
work is the product of what two factors? - answer✔Force and distance moved.
what are the parts of a lever? - answer✔rigid bar, pivot point called the fulcrum
A wheelbarrow is an example of what class of lever? - answer✔second - class
Are all three states of matter affected by thermal expansion and if so, which state is affected
most? - answer✔yes and gases are most affected
What is a British Thermal Unit? - answer✔amount of heat energy required to change temp
of 1pound of water 1 degree F
name three methods of heat transfer? - answer✔conduction, convection, radiation
what term defines the temperature at which all molecular motion ceases? -
answer✔absolute zero
can liquids be compressed? - answer✔no- generally incompressible
what are the customary units used to express hydraulic or pneumatic pressure in the
united states? - answer✔pounds per square inch
describe how pressure is transmitted when a force is applied to a confined liquid? -
answer✔equal in all directions
What formula expresses the relationship between force, pressure and area? -
answer✔force= area times pressure
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What is the approximate speed of sound at sea level on a standard day? - answer✔661
knots or 340 meters per second
what is the atmospheric pressure at sea level on a standard day? - answer✔29.92 inches of
mercury or 1013.2 millibars
on a standard day at sea level, what is the value for temperature? - answer✔59*F or 15*C
what are the factors that determine density altitude? - answer✔temp and atmospheric
pressure
what is the term used 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? - answer✔relative humidity
what are the four principle forces acting on an airplane in flight? - answer✔lift, drag, thrust,
gravity
what is the term that describes the angle between the relative wind and the chord line of an
airfoil? - answer✔angle of attack
what are the factors that cause an airplane wing to stall? - answer✔angle of attack exceeds
critical value and airflow separates from upper surface- becomes turbulent
what are the principle effects that result from lowering the flaps while in flight? -
answer✔lift increase, drag increase, stall speed decrease
what is the function of a wing mounted vortex generator? - answer✔delay or keep airflow
from separating from upper surface of wing during high speed flight
How does blade flapping help to compensate for dissymmetry of lift in helicopter main
rotor systems? - answer✔increases the angle of attack and lift on retreating blades.
decreases the angle of attack and lift on advancing blade
How does the airflow through the main rotor of a helicopter change during the transition
from normal flight to autorotation? - answer✔normal flight air downward- autorotation air
upward
what is friction? - answer✔opposition to relative motion between two objects in contact
one kilowatt is equal to how many watts? - answer✔1,000 watts
What law describes the most fundamental or basic relationships in an electrical circuit? -
answer✔ohm's law
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