Dale Crane General Exam Questions And
Answers Verified 100% Correct
What is the result of cell imbalance in a nickel-cadmium battery? - ANSWER- The low
internal resistance allows current to flow between the unbalanced cells and generate
heat.
What is thermal runaway? - ANSWER- The large current flow allowed by the low
internal resistance causes the middle cells to produce more heat than they can
dissipate. The heat further lowers the internal resistance so more current can flow, this
continues until the battery destroys itself.
How may thermal runaway be prevented? - ANSWER- By carefully monitoring the
temperature of the middle cells and controlling the charging current to prevent an
excess of current flowing into the battery.
How is it possible to know when a nickel-cadmium battery is fully charged? - ANSWER-
Completely discharge the battery and give it a constant-current charge to 140% of its
ampere-hour capacity.
What is used to neutralize spilled electrolyte from nickel-cadmium battery? - ANSWER-
A solution of boric acid and water.
How many views can there be an orthographic projection? - ANSWER- Six.
How many views are used to show most objects in an aircraft drawing? - ANSWER-
Three.
What information is given in the title block of an aircraft drawing? - ANSWER- The name
and address of the company who made the part, the name of the part, the scale of the
drawing, the name of the draftsman, the name of the engineer approving the part, and
the number of the part ( the drawing number ).
Where Is the title block normally located on an aircraft drawing? - ANSWER- In the
lower right-hand of the drawing.
How can you know that the aircraft drawing you are using is the most current version of
the drawing? - ANSWER- By the number in the revision block, and by the log of the
most recent drawings.
What is a fuselage station number? - ANSWER- The distance in inches from the datum,
,measured along the longitudinal axis of the fuselage.
What is a butt line? - ANSWER- A reference line to the right or left of the center line of
the aircraft.
What is a detail drawing? - ANSWER- A drawing that includes all the information
needed to fabricate the part.
What is an assembly drawing? - ANSWER- A drawing that shows all the components of
a part in an exploded form. A parts list is included with an assembly drawing.
What is an installation drawing? - ANSWER- A drawing that shows the location of the
parts and assemblies on the complete aircraft.
What type of drawing is most helpful in troubleshooting a system? - ANSWER- A
schematic diagram.
What is a block diagram? - ANSWER- A drawing that shows the various functions of a
system by a series of blocks. These blocks do not include any detail, but indicate what
happens in each block.
How are dimensions shown on an aircraft drawing? - ANSWER- By numbers shown in
the break of a dimension line.
What is the purpose of a sketch of a repair? - ANSWER- It shows a specific bit of
information and includes the minimum amount of detail needed to manufacture the part.
What are the four steps in making a sketch? - ANSWER- 1) Block in the space
and basic shape used for the sketch. 2) Add details to the basic block. 3) Darken
lines that are to show up as visible lines in the finished sketch.
4) Add dimensions and any other information that will make the sketch more usable.
What is the purpose of a center line on an aircraft drawing? - ANSWER- It divides a part
into symmetrical halves.
When should an aircraft be reweighed? - ANSWER- After an extensive repair or
alteration that could change its weight or center of gravity.
Why is it necessary to consider the category under which an aircraft is licensed when
computing it's weight and balance? - ANSWER- Different categories under an aircraft
can be licensed have different maximum gross weights and different center of gravity
ranges.
Where do you find the leveling means that are specified for a particular aircraft? -
,ANSWER- In the Type Certificate Data Sheet for the aircraft?
What is meant by tare weight? - ANSWER- The weight of any chocks and other items
that are used to hold the aircraft on the scales.
What must be done with tare weight when an aircraft is weighed? - ANSWER- It must
be subtracted from the scale readings to find the weight of the aircraft.
Why are the distances of all the items installed in an aircraft measured from the datum
when computing weight and balance? - ANSWER- This makes it possible to find the
point about which the aircraft would balance (the center of gravity).
Which has the more critical center of gravity range, an airplane or a helicopter? -
ANSWER- A helicopter.
What is included in the empty weight of an aircraft? - ANSWER- The weight of the
airframe, engines, and all items of operating equipment that have fixed locations and
are permanently installed in the aircraft. Empty weight includes optional and special
equipment, fixed ballast, full reservoirs of hydraulic fluid and engine lubricating oil, and
unusable fuel.
Where is the maximum allowable gross weight of an aircraft found? - ANSWER- In the
Type Certificate Data Sheet for the aircraft.
What equipment must be installed in an aircraft when it is weighed to find its empty
weight center of gravity? - ANSWER- All the equipment listed in the Aircraft List as
"required equipment" or as equipment that is permanently installed.
What is meant by permanent ballast for an aircraft? - ANSWER- Weight that is
permanently installed in an aircraft to bring the empty weight center of gravity into
allowable limits.
Is there a Federal Regulation requiring that all private aircraft be reweighed
periodically? - ANSWER- No.
What must be done with a temporary ballast when weighing an aircraft? - ANSWER- It
must be removed from the aircraft.
What must be done to find the empty weight of an aircraft if it has been weighed with
fuel in its tanks? - ANSWER- The weight of the fuel and it's moment must be
subtracted from the weight and moment of the aircraft as it was weighed.
What is meant by minimum fuel as is used in the computation of aircraft weight and
balance? - ANSWER- No more fuel than the quantity necessary for one-half hour of
, operation at rated maximum continuous power. It is the maximum amount of fuel used
in weight and balance computations when low fuel may adversely affect the most
critical balance conditions.
What is meant by the maximum zero fuel weight of an aircraft? - ANSWER- The
maximum permissible weight of a loaded aircraft (passengers, crew,cargo,etc.), less it's
fuel.
What Is meant by undrainable fuel? - ANSWER- The fuel that is left in the tank, lines
and components when the aircraft is placed in level flight position and the fuel drained
at the main fuel strainer. This is also called residual fuel.
Describe the way you would find the empty weight and empty weight center of gravity of
an airplane if there are no weight and balance records available? - ANSWER- The
aircraft is weighed, and the empty weight center of gravity is computed. These values
are recorded in the new weight and balance records started for the aircraft.
What are two reasons weight and balance control are important in an aircraft? -
ANSWER- For safety of flight and for most efficient operation of the aircraft.
Where is the center of gravity for most airplanes located in relation to the center of lift? -
ANSWER- The CG is normally ahead of the center of lift.
What is meant by the datum that is used for weight and balance computations? -
ANSWER- It is readily identified reference chosen by the aircraft manufacturer from
which all longitudinal locations on the aircraft are referenced.
What is meant by moment in the computation of weight and balance? - ANSWER- A
force that tends to cause rotation. It is the product of the weight of an object in pounds
and the distance of the object from the datum in inches.
How do you find the moment of an item installed in an aircraft? - ANSWER- Multiply the
weight of the item in pounds by its distance from the datum in inches.
What is meant by the arm of an item installed in an aircraft? - ANSWER- The distance,
in inches, between the center of gravity of the item and the datum.
Where do you find the arm of an item installed in an aircraft? - ANSWER- In the Type
Certificate Data Sheets for the aircraft.
What is meant by a moment index? - ANSWER- A moment divided by a constant such
as 10, 100, 1,000.
Answers Verified 100% Correct
What is the result of cell imbalance in a nickel-cadmium battery? - ANSWER- The low
internal resistance allows current to flow between the unbalanced cells and generate
heat.
What is thermal runaway? - ANSWER- The large current flow allowed by the low
internal resistance causes the middle cells to produce more heat than they can
dissipate. The heat further lowers the internal resistance so more current can flow, this
continues until the battery destroys itself.
How may thermal runaway be prevented? - ANSWER- By carefully monitoring the
temperature of the middle cells and controlling the charging current to prevent an
excess of current flowing into the battery.
How is it possible to know when a nickel-cadmium battery is fully charged? - ANSWER-
Completely discharge the battery and give it a constant-current charge to 140% of its
ampere-hour capacity.
What is used to neutralize spilled electrolyte from nickel-cadmium battery? - ANSWER-
A solution of boric acid and water.
How many views can there be an orthographic projection? - ANSWER- Six.
How many views are used to show most objects in an aircraft drawing? - ANSWER-
Three.
What information is given in the title block of an aircraft drawing? - ANSWER- The name
and address of the company who made the part, the name of the part, the scale of the
drawing, the name of the draftsman, the name of the engineer approving the part, and
the number of the part ( the drawing number ).
Where Is the title block normally located on an aircraft drawing? - ANSWER- In the
lower right-hand of the drawing.
How can you know that the aircraft drawing you are using is the most current version of
the drawing? - ANSWER- By the number in the revision block, and by the log of the
most recent drawings.
What is a fuselage station number? - ANSWER- The distance in inches from the datum,
,measured along the longitudinal axis of the fuselage.
What is a butt line? - ANSWER- A reference line to the right or left of the center line of
the aircraft.
What is a detail drawing? - ANSWER- A drawing that includes all the information
needed to fabricate the part.
What is an assembly drawing? - ANSWER- A drawing that shows all the components of
a part in an exploded form. A parts list is included with an assembly drawing.
What is an installation drawing? - ANSWER- A drawing that shows the location of the
parts and assemblies on the complete aircraft.
What type of drawing is most helpful in troubleshooting a system? - ANSWER- A
schematic diagram.
What is a block diagram? - ANSWER- A drawing that shows the various functions of a
system by a series of blocks. These blocks do not include any detail, but indicate what
happens in each block.
How are dimensions shown on an aircraft drawing? - ANSWER- By numbers shown in
the break of a dimension line.
What is the purpose of a sketch of a repair? - ANSWER- It shows a specific bit of
information and includes the minimum amount of detail needed to manufacture the part.
What are the four steps in making a sketch? - ANSWER- 1) Block in the space
and basic shape used for the sketch. 2) Add details to the basic block. 3) Darken
lines that are to show up as visible lines in the finished sketch.
4) Add dimensions and any other information that will make the sketch more usable.
What is the purpose of a center line on an aircraft drawing? - ANSWER- It divides a part
into symmetrical halves.
When should an aircraft be reweighed? - ANSWER- After an extensive repair or
alteration that could change its weight or center of gravity.
Why is it necessary to consider the category under which an aircraft is licensed when
computing it's weight and balance? - ANSWER- Different categories under an aircraft
can be licensed have different maximum gross weights and different center of gravity
ranges.
Where do you find the leveling means that are specified for a particular aircraft? -
,ANSWER- In the Type Certificate Data Sheet for the aircraft?
What is meant by tare weight? - ANSWER- The weight of any chocks and other items
that are used to hold the aircraft on the scales.
What must be done with tare weight when an aircraft is weighed? - ANSWER- It must
be subtracted from the scale readings to find the weight of the aircraft.
Why are the distances of all the items installed in an aircraft measured from the datum
when computing weight and balance? - ANSWER- This makes it possible to find the
point about which the aircraft would balance (the center of gravity).
Which has the more critical center of gravity range, an airplane or a helicopter? -
ANSWER- A helicopter.
What is included in the empty weight of an aircraft? - ANSWER- The weight of the
airframe, engines, and all items of operating equipment that have fixed locations and
are permanently installed in the aircraft. Empty weight includes optional and special
equipment, fixed ballast, full reservoirs of hydraulic fluid and engine lubricating oil, and
unusable fuel.
Where is the maximum allowable gross weight of an aircraft found? - ANSWER- In the
Type Certificate Data Sheet for the aircraft.
What equipment must be installed in an aircraft when it is weighed to find its empty
weight center of gravity? - ANSWER- All the equipment listed in the Aircraft List as
"required equipment" or as equipment that is permanently installed.
What is meant by permanent ballast for an aircraft? - ANSWER- Weight that is
permanently installed in an aircraft to bring the empty weight center of gravity into
allowable limits.
Is there a Federal Regulation requiring that all private aircraft be reweighed
periodically? - ANSWER- No.
What must be done with a temporary ballast when weighing an aircraft? - ANSWER- It
must be removed from the aircraft.
What must be done to find the empty weight of an aircraft if it has been weighed with
fuel in its tanks? - ANSWER- The weight of the fuel and it's moment must be
subtracted from the weight and moment of the aircraft as it was weighed.
What is meant by minimum fuel as is used in the computation of aircraft weight and
balance? - ANSWER- No more fuel than the quantity necessary for one-half hour of
, operation at rated maximum continuous power. It is the maximum amount of fuel used
in weight and balance computations when low fuel may adversely affect the most
critical balance conditions.
What is meant by the maximum zero fuel weight of an aircraft? - ANSWER- The
maximum permissible weight of a loaded aircraft (passengers, crew,cargo,etc.), less it's
fuel.
What Is meant by undrainable fuel? - ANSWER- The fuel that is left in the tank, lines
and components when the aircraft is placed in level flight position and the fuel drained
at the main fuel strainer. This is also called residual fuel.
Describe the way you would find the empty weight and empty weight center of gravity of
an airplane if there are no weight and balance records available? - ANSWER- The
aircraft is weighed, and the empty weight center of gravity is computed. These values
are recorded in the new weight and balance records started for the aircraft.
What are two reasons weight and balance control are important in an aircraft? -
ANSWER- For safety of flight and for most efficient operation of the aircraft.
Where is the center of gravity for most airplanes located in relation to the center of lift? -
ANSWER- The CG is normally ahead of the center of lift.
What is meant by the datum that is used for weight and balance computations? -
ANSWER- It is readily identified reference chosen by the aircraft manufacturer from
which all longitudinal locations on the aircraft are referenced.
What is meant by moment in the computation of weight and balance? - ANSWER- A
force that tends to cause rotation. It is the product of the weight of an object in pounds
and the distance of the object from the datum in inches.
How do you find the moment of an item installed in an aircraft? - ANSWER- Multiply the
weight of the item in pounds by its distance from the datum in inches.
What is meant by the arm of an item installed in an aircraft? - ANSWER- The distance,
in inches, between the center of gravity of the item and the datum.
Where do you find the arm of an item installed in an aircraft? - ANSWER- In the Type
Certificate Data Sheets for the aircraft.
What is meant by a moment index? - ANSWER- A moment divided by a constant such
as 10, 100, 1,000.
