General

8110. A line used to show an edge which is not visible is a A— phantom line. B— hidden line. C—break line.

A phantom line is a light line made up of an alternate long dash and two short dashes. A phantom line shows the location of a part that is used as a reference. A hidden line is a medium-weight, dashed line that shows a surface or a part that is not visible from the view in which it appears. A break line is a wavy or a zigzag line used to show that a part has been broken off and only part of it is shown.

8107. A specific measured distance from the datum or some other point identified by the manufacturer, to a point in or on the aircraft is called a A— zone number. B— reference number. C—station number.

A station number is a number used to identify the number of inches from the datum or other point identified by the manufacturer to a point in or on the aircraft.

8113. (Refer to Figure 31.) What are the proper procedural steps for sketching repairs and alterations? A— 3, 1, 4, 2. B— 4, 2, 3, 1. C— 1, 3, 4, 2.

An easy way to make a sketch of a repair or alteration is to: 3 Block in the space and basic shape to be used for the sketch; 1 Add details to the basic block; 4 Darken the lines that are to show up as visible lines in the finished sketch; and 2 Add dimensions and any other information that will make the sketch more usable.

8108. Which statement is true regarding an orthographic projection? A— There are always at least two views. B— It could have as many as eight views. C—One-view, two-view, and three-view drawings are the most common.

An orthographic projection can show as many as six views of an object. One-view, two-view, and three-view drawings are the most commonly used types of orthographic projections.

8103. What type of line is normally used in a mechanical drawing or blueprint to represent an edge or object not visible to the viewer? A— Medium-weight dashed line. B— Medium solid line. C—Alternate short and long light dashes.

Answer ( Medium solid line.) A medium-weight dashed line is called a hidden line and is used to show an edge or object not visible to the viewer. A medium solid line is used as a visible outline or object line. Alternate short and long light dashes are used to show a center line.

8105. (1 ) A detail drawing is a description of a single part. (2) An assembly drawing is a description of an object made up of two or more pans. Regarding the above statements, A— only No. 1 is true. B— neither No. 1 nor No. 2 is true. C—both No. 1 and No. 2 are true.

Answer ( both No. 1 and No. 2 are true..) Statement ( 1) is true. A detail drawing is a description of a single part that includes enough information to allow the part to be manufactured (fabricated). Statement (2) is also true. An assembly drawing is a drawing that shows the way various detail parts are put together to form an assembly or a subassembly Assembly drawings refer to the various parts to be assembled by the drawing number of their detail drawings.

8104. (Refer to Figure 27.) In the isometric view of a typical aileron balance weight, identify the view indicated by the arrow. A—1. B—3. C—2.

Answer (B—3.) View 3 shows the aileron balance weight as seen from the direction shown by the arrow. This view shows the outline of the weight and the outline of the hole. Both of these are drawn as solid lines. The two bolt holes are shown as light, dashed line (hidden lines), and there are also two hidden lines that show the break lines where the radius begins for the tip of the weight.

8106. (Refer to Figure 28.) Identify the bottom view of the object shown. A— 2. B— 3. C—1.

Answer (View 2) View 1 is not a correct orthographic view of this part. View 2 shows the part as it would be seen looking up at it from the bottom. The vertical lines are hidden. View 3 is not a correct orthographic view of this part.

8110-1. What type of drawing line consists of alternating long and short lines? A— Dimension. B—Center. C—Hidden

Centerlines are made up of alternate long and short dashes. They indicate the center of an object or part of an object. Where centerlines cross, the short dashes intersect symmetrically. In the case of veal small circles, the centerlines may be shown unbroken.

8112. (1) Schematic diagrams indicate the location of individual components in the aircraft. (2) Schematic diagrams indicate the location of components with respect to each other within the system. Regarding the above statements, A— only No. 1 is true. B—both No. 1 and No. 2 are true. C—only No. 2 is true.

Statement ( 1) is not true. Schematic diagrams do not indicate the location of individual components in the aircraft. Statement (2) is true. Schematic diagrams do show the location of the components with respect to each other within the system.

8111. (Refer to Figure 30.) Identify the bottom view of the object. A— 1. B— 2. C— 3.

View 1 is the bottom. The two vertical surfaces are shown as hidden lines. View 2 is the left side. The two horizontal surfaces are shown as hidden lines. View 3 is the top view The two vertical surfaces are shown as visible lines.

8109. (Refer to Figure 29.) Identify the left side view of the object shown. A—1. B—2. C—3.

View 1 is the right side. We see the horizontal surface as a visible line. View2 is the bottom view. The vertical surface is shown as a hidden line. View 3 is the left side. The horizontal surface is shown as a hidden line.