JEPPESEN - GENERAL TECHNICIAN / TEST GUIDE
WITH ORAL AND PRACTICAL STUDY GUIDE || A+
GUARANTEED.
Describe the result of adding a large positive number and a smaller negative number. correct
answers The result is a smaller positive number, and is the same as ignoring the signs and
subtracting the smaller number from the larger.
How do you convert a fraction into a decimal? correct answers Divide the top number
(numerator) by the bottom number (denominator).
What is the key step that must be performed in order to add or subtract unlike fractions?
correct answers You must find the lowest (least) common denominator.
How do you divide on fraction by another? correct answers You invert the divisor and
multiply the numerators together and the denominators together.
How can you convert a decimal into a percent? correct answers (1) Multiply the decimal by
100 and add the percent sign. (2) Move the decimal point two places to the right and add the
percent sign.
How do you convert a fraction into a percent? correct answers Convert it to a decimal, move
the decimal point two places to the right and add the percent sign.
How do you change a decimal into the nearest equivalent fraction? correct answers Multiply
the decimal by the desired denominator. The result becomes the numerator in the fraction.
How are two different ways that a ratio may be expressed? correct answers (1) As a fraction.
(2) By placing a colon (:) between the two numbers. (3) By using the word "to" between the
two numbers.
What is a proportion? correct answers A statement of equality between two or more ratios.
What is meant by the root of a number? correct answers A root is two or more equal smaller
numbers that, when multiplied together, equal the specified number.
How do you find the square of a number? correct answers Multiply the number by itself.
Example: 4×4=16, 7×7=49.
What is a common method of making computations involving very large or very small
numbers more manageable? correct answers Convert the numbers into scientific notation by
using powers of 10.
How is 100,000 expressed as a power of 10? correct answers 10^5 (10 to the 5th power)
What formula is used to find the area of a rectangle and of a triangle? correct answers For a
rectangle, A = L x W. For a triangle, A = 1/2(B x H)
,Define Pi (π). correct answers Pi is a constant that expresses the relationship between the
circumference of a circle and its diameter and is approximately equal to 3.1416.
Describe a trapezoid. correct answers A trapezoid is a closed, four-sided figure having two
parallel sides and two sides that are not parallel.
What is the formula for computing the area of a circle? correct answers A = π r^2
Define matter. correct answers Any substance that occupies space and has mass.
Matter may exist in what three states? correct answers Solid, liquid, gas.
Define kinetic energy. correct answers Kinetic energy is the energy of motion.
Work is the product of what two factor? correct answers Force and the distance moved.
What are the parts of a lever? correct answers A rigid bar and a pivot point called the
fulcrum.
A wheelbarrow is an example of what class of lever? correct answers A second-class lever.
Are all three states of matter affected by thermal expansion and if so, which state is affected
most? correct answers All three states are affected, with gas being affected the most.
What is a British Thermal Unit? correct answers The amount of heat energy required to
change the temperature of 1 pound of water 1 degree Fahrenheit.
Name the three methods of heat transfer? correct answers Conduction, convection and
radiation
What term defines the temperature at which all molecular motion ceases? correct answers
Absolute zero.
Can liquids be compressed? correct answers No, liquids are generally considered
incompressible.
What are the customary units used to express hydraulic or pneumatic pressure in the United
States? correct answers Pounds per square inch (PSI).
Describe how pressure is transmitted when a force is applied to a confined liquid. correct
answers Pressure is transmitted equally in all directions.
What formula expresses the relationship between force, pressure and area? correct answers
Force equals Area times Pressure.
What is the approximate speed of sound at sea level on a standard day? correct answers 661
knots or 340 meters per second.
What is the atmospheric pressure at sea level on a standard day? correct answers 29.92 inches
of Mercury or 1013.2 millibars.
, On a standard day at sea level, what is the value for temperature? correct answers 59°F or
15°C.
What are the factors that determine density altitude? correct answers Temperature 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?
correct answers Relative humidity.
What are the four principal forces acting on an airplane in flight? correct answers Lift, drag,
thrust, and gravity.
What is the term that describes the angle between the relative wind and the chord line of an
airfoil? correct answers The Angle of Attack (AOA).
What are the factors that cause an airplane wing to stall? correct answers 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 principal effects that result from lowering the flaps while in flight? correct
answers Lift increases, drag increases, and stall speed decreases.
What is the function of a wing mounted vortex generator? correct answers 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? correct answers 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? correct answers During normal flight the air moves downward
and during autorotation the air moves upward.
What is friction? correct answers The opposition to relative motion between two objects in
contact with each other.
One Killowatt is equal to how many Watts? correct answers 1000 Watts.
What law describes the most fundamental or basic relationships in an electrical circuit?
correct answers Ohm's Law.
What are the three elements of Ohm's law? correct answers Voltage, current, and resistance.
How would you write Ohm's law as an equation? correct answers E = I x R, R = E / I, or I =
E/R
WITH ORAL AND PRACTICAL STUDY GUIDE || A+
GUARANTEED.
Describe the result of adding a large positive number and a smaller negative number. correct
answers The result is a smaller positive number, and is the same as ignoring the signs and
subtracting the smaller number from the larger.
How do you convert a fraction into a decimal? correct answers Divide the top number
(numerator) by the bottom number (denominator).
What is the key step that must be performed in order to add or subtract unlike fractions?
correct answers You must find the lowest (least) common denominator.
How do you divide on fraction by another? correct answers You invert the divisor and
multiply the numerators together and the denominators together.
How can you convert a decimal into a percent? correct answers (1) Multiply the decimal by
100 and add the percent sign. (2) Move the decimal point two places to the right and add the
percent sign.
How do you convert a fraction into a percent? correct answers Convert it to a decimal, move
the decimal point two places to the right and add the percent sign.
How do you change a decimal into the nearest equivalent fraction? correct answers Multiply
the decimal by the desired denominator. The result becomes the numerator in the fraction.
How are two different ways that a ratio may be expressed? correct answers (1) As a fraction.
(2) By placing a colon (:) between the two numbers. (3) By using the word "to" between the
two numbers.
What is a proportion? correct answers A statement of equality between two or more ratios.
What is meant by the root of a number? correct answers A root is two or more equal smaller
numbers that, when multiplied together, equal the specified number.
How do you find the square of a number? correct answers Multiply the number by itself.
Example: 4×4=16, 7×7=49.
What is a common method of making computations involving very large or very small
numbers more manageable? correct answers Convert the numbers into scientific notation by
using powers of 10.
How is 100,000 expressed as a power of 10? correct answers 10^5 (10 to the 5th power)
What formula is used to find the area of a rectangle and of a triangle? correct answers For a
rectangle, A = L x W. For a triangle, A = 1/2(B x H)
,Define Pi (π). correct answers Pi is a constant that expresses the relationship between the
circumference of a circle and its diameter and is approximately equal to 3.1416.
Describe a trapezoid. correct answers A trapezoid is a closed, four-sided figure having two
parallel sides and two sides that are not parallel.
What is the formula for computing the area of a circle? correct answers A = π r^2
Define matter. correct answers Any substance that occupies space and has mass.
Matter may exist in what three states? correct answers Solid, liquid, gas.
Define kinetic energy. correct answers Kinetic energy is the energy of motion.
Work is the product of what two factor? correct answers Force and the distance moved.
What are the parts of a lever? correct answers A rigid bar and a pivot point called the
fulcrum.
A wheelbarrow is an example of what class of lever? correct answers A second-class lever.
Are all three states of matter affected by thermal expansion and if so, which state is affected
most? correct answers All three states are affected, with gas being affected the most.
What is a British Thermal Unit? correct answers The amount of heat energy required to
change the temperature of 1 pound of water 1 degree Fahrenheit.
Name the three methods of heat transfer? correct answers Conduction, convection and
radiation
What term defines the temperature at which all molecular motion ceases? correct answers
Absolute zero.
Can liquids be compressed? correct answers No, liquids are generally considered
incompressible.
What are the customary units used to express hydraulic or pneumatic pressure in the United
States? correct answers Pounds per square inch (PSI).
Describe how pressure is transmitted when a force is applied to a confined liquid. correct
answers Pressure is transmitted equally in all directions.
What formula expresses the relationship between force, pressure and area? correct answers
Force equals Area times Pressure.
What is the approximate speed of sound at sea level on a standard day? correct answers 661
knots or 340 meters per second.
What is the atmospheric pressure at sea level on a standard day? correct answers 29.92 inches
of Mercury or 1013.2 millibars.
, On a standard day at sea level, what is the value for temperature? correct answers 59°F or
15°C.
What are the factors that determine density altitude? correct answers Temperature 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?
correct answers Relative humidity.
What are the four principal forces acting on an airplane in flight? correct answers Lift, drag,
thrust, and gravity.
What is the term that describes the angle between the relative wind and the chord line of an
airfoil? correct answers The Angle of Attack (AOA).
What are the factors that cause an airplane wing to stall? correct answers 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 principal effects that result from lowering the flaps while in flight? correct
answers Lift increases, drag increases, and stall speed decreases.
What is the function of a wing mounted vortex generator? correct answers 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? correct answers 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? correct answers During normal flight the air moves downward
and during autorotation the air moves upward.
What is friction? correct answers The opposition to relative motion between two objects in
contact with each other.
One Killowatt is equal to how many Watts? correct answers 1000 Watts.
What law describes the most fundamental or basic relationships in an electrical circuit?
correct answers Ohm's Law.
What are the three elements of Ohm's law? correct answers Voltage, current, and resistance.
How would you write Ohm's law as an equation? correct answers E = I x R, R = E / I, or I =
E/R
