A&P Powerplant Oral Exam Prep
2026/2027 – Aviation Mechanic
Questions, Answers, and Test Bank
Describe the result of adding a large positive number and a smaller negative
number. - ANSWER-The result is a smaller positive number.
How do you convert a fraction into a decimal? - ANSWER-Divide the numerator by
the denominator.
What is the key step that must be performed in order to add or subtract unlike
fractions? - ANSWER-Find the lowest common denominator.
How do you divide one fraction by another? - ANSWER-Invert the divisor and
multiply.
How can you convert a decimal into a percent? - ANSWER-Multiply by 100 and
add the % sign.
How do you convert a fraction into a percent? - ANSWER-Convert into a decimal
and then multiply by 100 and adding the % sign.
,How do you change a decimal into the nearest equivalent fraction? - ANSWER-
Multiply by the desired denominator to get the numerator.
What are two different ways that a ratio may be expressed? - ANSWER-1. As a
fraction
2. By placing a colon (:) between the two numbers
3. Use the word "to" between the two numbers.
What is a proportion? - ANSWER-A statement of equality between two or more
ratios.
What is meant by the root of the number? - ANSWER-A smaller number that
when multiplied by itself two or more times results in the specified number.
How do you find the square of a number? - ANSWER-Multiply the number by
itself.
What is the common method of making computations involving very large or very
small numbers more manageable? - ANSWER-Convert into scientific notation
using powers of 10.
How is 100,000 expressed as a power of 10? - ANSWER-10 to the 5th power.
What formula is used to find the area of a rectangle and a triangle? - ANSWER-
Rectangle = L x W
Triangle = 1/2 (B x H)
,Define Pi. - ANSWER-Pi is a constant that defines the relationship between the
circumference and the diameter of a circle. Approximately equal to 3.1416
Describe a trapezoid. - ANSWER-A trapezoid is a closed, four sided figure with two
parallel sides.
What is the formula for computing the area of a circle? - ANSWER-Pi (r x r). Pi R
squared!
Define matter. - ANSWER-Anything that occupies space and has mass.
Matter may exist in what three states? - ANSWER-Solid, liquid, and 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-A rigid bar and a pivot point called the
fulcrum.
A wheelbarrow is a example of what class of lever? - ANSWER-A second-class
lever.
, Are all three states of matter affected by thermal expansion and if so, which state
is affected most? - ANSWER-All three states are affected, with gas being affected
the most.
What is a British Thermal Unit? - ANSWER-The amount of heat energy required to
change the temp of 1 pound of water 1 degree Fahrenheit.
Name the three methods of heat transfer? - ANSWER-Conduction, convection and
radiation.
What term defines the temperature at which all molecular motion ceases? -
ANSWER-Absolute zero.
Can liquids be compressed? - ANSWER-No, liquids are generally considered
incompressible.
What are the customary units used to express hydraulic or pneumatic pressure in
the U.S.? - ANSWER-Pounds per square inch
Describe how pressure is transmitted when a force is applied to a confined liquid.
- ANSWER-Pressure is transmitted equally in all directions.
What formula expressed the relationship between force, pressure and area? -
ANSWER-Force equals area times pressure.
2026/2027 – Aviation Mechanic
Questions, Answers, and Test Bank
Describe the result of adding a large positive number and a smaller negative
number. - ANSWER-The result is a smaller positive number.
How do you convert a fraction into a decimal? - ANSWER-Divide the numerator by
the denominator.
What is the key step that must be performed in order to add or subtract unlike
fractions? - ANSWER-Find the lowest common denominator.
How do you divide one fraction by another? - ANSWER-Invert the divisor and
multiply.
How can you convert a decimal into a percent? - ANSWER-Multiply by 100 and
add the % sign.
How do you convert a fraction into a percent? - ANSWER-Convert into a decimal
and then multiply by 100 and adding the % sign.
,How do you change a decimal into the nearest equivalent fraction? - ANSWER-
Multiply by the desired denominator to get the numerator.
What are two different ways that a ratio may be expressed? - ANSWER-1. As a
fraction
2. By placing a colon (:) between the two numbers
3. Use the word "to" between the two numbers.
What is a proportion? - ANSWER-A statement of equality between two or more
ratios.
What is meant by the root of the number? - ANSWER-A smaller number that
when multiplied by itself two or more times results in the specified number.
How do you find the square of a number? - ANSWER-Multiply the number by
itself.
What is the common method of making computations involving very large or very
small numbers more manageable? - ANSWER-Convert into scientific notation
using powers of 10.
How is 100,000 expressed as a power of 10? - ANSWER-10 to the 5th power.
What formula is used to find the area of a rectangle and a triangle? - ANSWER-
Rectangle = L x W
Triangle = 1/2 (B x H)
,Define Pi. - ANSWER-Pi is a constant that defines the relationship between the
circumference and the diameter of a circle. Approximately equal to 3.1416
Describe a trapezoid. - ANSWER-A trapezoid is a closed, four sided figure with two
parallel sides.
What is the formula for computing the area of a circle? - ANSWER-Pi (r x r). Pi R
squared!
Define matter. - ANSWER-Anything that occupies space and has mass.
Matter may exist in what three states? - ANSWER-Solid, liquid, and 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-A rigid bar and a pivot point called the
fulcrum.
A wheelbarrow is a example of what class of lever? - ANSWER-A second-class
lever.
, Are all three states of matter affected by thermal expansion and if so, which state
is affected most? - ANSWER-All three states are affected, with gas being affected
the most.
What is a British Thermal Unit? - ANSWER-The amount of heat energy required to
change the temp of 1 pound of water 1 degree Fahrenheit.
Name the three methods of heat transfer? - ANSWER-Conduction, convection and
radiation.
What term defines the temperature at which all molecular motion ceases? -
ANSWER-Absolute zero.
Can liquids be compressed? - ANSWER-No, liquids are generally considered
incompressible.
What are the customary units used to express hydraulic or pneumatic pressure in
the U.S.? - ANSWER-Pounds per square inch
Describe how pressure is transmitted when a force is applied to a confined liquid.
- ANSWER-Pressure is transmitted equally in all directions.
What formula expressed the relationship between force, pressure and area? -
ANSWER-Force equals area times pressure.
