Sectional Views, Auxiliary Views, Axonometric and Oblique Views
1. When the interior of an object is complicated, which of the following view is used?
a) Front view
b) Side view
c) Top view
d) Sectional view
.
Answer: d
Explanation: When the interior of an object is complicated, the number of dashed is overlap by the continuous lines due to their same position. For that reason sectional view is used. Top view or front view here may or may not be useful.
2. What is the type of sections from given option?
a) Full section
b) Side section
c) Top section
d) Front section
.
Answer: a
Explanation: Various types of sections which are used in section view are as following:
1 – Full section
2 – Half section
3 – Revolved section
4 – Removed section
5 – Broken out section
6 – Auxiliary section
7 – Assembly section.
3. When the cutting plane cuts the entire object the section is known as _______
a) Full section
b) Half section
c) Revolved section
d) Removed section
.
Answer: a
Explanation: When the cutting plane cuts the entire object the section is known as a full section. This method of sectioning is mostly used in sectioning work. It gives the total object details in one section.
4. Straight cutting plane in one line can be used if ___________
a) all the hidden objects are not in one line
b) all the hidden objects are in one line
c) the single line nor offset sectioning is useful and shape of the object is inclined
d) it is used for combined objects
.
Answer: b
Explanation: Straight cutting plane in one line can be used if all the hidden objects are in one line. Offset cutting planes can be used if the hidden objects are in one line. Straight cutting planes are not useful for the combined objects.
5. Inclined and offset cutting planes can be used if __________
a) all the hidden objects are not in one line
b) all the hidden objects are in one line
c) the single line nor offset sectioning is useful and shape of the object is inclined
d) it is used for combined objects
.
Answer: d
Explanation: Inclined and offset cutting planes can be used for combined objects. Inclined cutting planes can be useful when neither single line nor offset sectioning is useful. And also it is useful when the shape of the object is inclined.
6. For the object which is symmetrical about the central axis; from which method of section it can be drawn __________
a) Full section
b) Half section
c) Revolved section
d) Removed section
.
Answer: b
Explanation: Half section method of sectioning is useful for objects symmetrical about the central axis. For half section consider the two planes which are perpendicular to each other containing the center line of the object. Other methods are not useful for the objects symmetrical about the vertical axis.
7. When the section is to be drawn for a small area of the object, a ________section is used.
a) full section
b) half section
c) revolved section
d) removed section
.
Answer: c
Explanation: When the section is to be drawn for a small area of the object, a revolved section is used. The section is at a right angle to the axis of the object and can be placed or drawn anywhere.
8. Crane hook is to drawn by _________method.
a) full section
b) half section
c) removed section
d) revolved section
.
Answer: d
Explanation: The cross section of the arm of a pulley is shown by the revolved section method which is not showing by the other sectioning method. For a crane hook, revolved sections are shown at different locations as the section is changing continuously along the axis. Means crane hook is not drawn or shown by the other method.
9. The section in which the sectional views are not drawn there itself, but at a place adjacent to it is known as _________
a) removed section
b) broken out section
c) auxiliary section
d) assembly section
.
Answer: a
Explanation: The section in which the sectional views are not drawn there itself, but at a place adjacent to it is known as a removed section. In this section, the turbine blade and different cross section are to be drawn by this method. Each view is designated by a pair of letters such as A-A, B-B, etc.
10. The cutting plane cut the small portion after before the is cut by the full or half section, the section is known as __________
a) removed section
b) broken out section
c) auxiliary section
d) assembly section
.
Answer: b
Explanation: If the cutting plane for full length or half length of the object removes the external features, then the cutting panes used for a small portion. The portion is called a partial section or broken out section. If you take a full section, some external details are removed.
11. The section which cuts the object at an angle is called ________
a) removed section
b) broken out section
c) auxiliary section
d) assembly section
.
Answer: c
Explanation: Auxiliary views are drawn when the cutting plane at an angle. It shows the detail of the inclined feature. The section which cuts the object at an angle is called an Auxiliary view.
12. The section which draws the section of assembly drawing is called as ____________
a) removed section
b) broken out section
c) auxiliary section
d) assembly section
.
Answer: d
Explanation: A sectional view of the assembly is called the assembly section. This view gives the details when all the parts are assembled together. Assembly drawing is a combined drawing of all the parts joined together at proper places.
13. Cutting plane is shown by _______ with thick end and two arrows in the direction view.
a) section line
b) chain line
c) single line
d) double line
.
Answer: b
Explanation: Cutting plane is shown by chain line with thick end and two arrows in the direction view. Cutting plane is named by identification letters such as A-A, X-X, Y-Y, etc. Cutting plane is that which cut the section plane at suitable angle for viewing internal dimensions.
14. In assembly half section, the section line cut the plane at an angle _________ or ________
a) 35, 45
b) 45, 125
c) 35, 135
d) 45, 135
.
Answer: d
Explanation: In assembly half section, solid area cut by the cutting plane is shown by thin section lines at 45° or 135°, if material is iron. Means the section cut the plane at an angle 45° or 135°. This angle is also used for the hatching line which is used in section planes when the two objects are adjacent.
15. If some important details are in the view it is sown by the ______ line.
a) section line
b) chain line
c) dashed line
d) double line
.
Answer: c
Explanation: If some important details are required, then dashed lines can be used. Hidden edges are generally not shown if they come in sectional view and should be avoided as far as possible. Because showing both the lines the sectional view is confusing for understanding.
16. Thin parts like stiffeners, webs, bolts, rivets, etc. are ________ if they are cut by the cutting plane along their axis.
a) not hatched
b) hatched
c) sectioned
d) not sectioned
.
Answer: a
Explanation: Thin parts like stiffeners, bolts, rivets, webs, etc. are not hatched if they are cut by the cutting plane along their axis. But it is shown by hatched if the cutting plane cuts at right angles to the axis. These parts are never shown with section lines.
17. ________ are not hatched but darkened like solids.
a) Very thin parts
b) Thin parts
c) Thick parts
d) Single part
.
Answer: a
Explanation: Very thin parts are not hatched but darkened like solids. For small parts, the gap is reduced, and for big parts, the section lines are drawn at a greater distance. For very large areas, section lines are drawn at near the boundary surface up to a certain length and central portion is left unhatched.
18. Long parts that cannot be accommodated on the drawing sheet are ____________
a) Shown continuous
b) Shown partly brake and partly continuous
c) Shown broken
d) Shown by reducing its scale
.
Answer: c
Explanation: Long parts that cannot be accommodated on the drawing sheet are shown broken with the cross section conventions. Means, the drawing which is not completely fitted within the sheet is shown by cross section conventions.
19. The crests of the thread are shown by a ______ continuous line and roots by ______ continuous line.
a) thin, thick
b) thick, thin
c) single, thin
d) double, thick
.
Answer: b
Explanation: The crests of the thread are shown by a thick continuous line and roots by thin continuous line. Because it is correct as by the appearance or viewing. Also, it is easy for understanding and details and properties of drawing.
20. The gap between crest and root lines should not be less than ______ the thickness of thick line.
a) half
b) equal
c) twice
d) thrice
.
Answer: c
Explanation: The gap between crest and root lines is kept equal to the depth of the thread. It should not be less than twice the thickness of thick line or 0.7 mm whichever is bigger. For hidden screw threads, the crests and roots are shown by dashed line.
21. Incomplete thread is hatches in assembly of external and internal thread.
a) True
b) False
.
Answer: b
Explanation: Incomplete threads are not hatches in assembly of external and internal thread; the area common to both is shown hatched at an angle of external thread. Because the not hatching sows the threads are incomplete in nature according to that view incomplete threads are not hatches in assembly of an external and internal thread.
22. Whatever material is cut by the cutting plane, should be _______
a) not hatched
b) hatched
c) empty
d) vertical
.
Answer: b
Explanation: Whatever material is cut by the cutting plane should be hatched. If material is other than iron, standard conventions for some commonly used materials are being used. Like aluminum material showing by the inclined lines and this is placed at too far distance.
23. The hatching line should be inclined at an angle ________
a) 35°
b) 25°
c) 45°
d) 55°
.
Answer: c
Explanation: The hatching lines are parallel to each other and it is normally inclined at an angle 45° or 135°.If the object is inclined to the horizontal. The hatching angle is to be measured from the objects horizontal axis and inclined at an angle 45° or 135°.
24. When two different parts are adjacent to each other, then the section line is drawn at an angle _____ and _______
a) 35° and 125°
b) 45° and 135°
c) 45° and 125°
d) 35° and 135°
.
Answer: b
Explanation: When two different parts are adjacent to each other, then the section line is drawn at an angle 45° and 135°. If one part is hatched at an angle 45° then the second object section line drawn at an angle 135° from horizontal. Due to this section line shows the two different objects. It is easy for understanding that it has two separate objects.
25. For three parts are placed in which of the case is fitted for that ___________
a) Change angle of hatching for third part as 45° or 75°
b) The gap between the section lines for object is same for the entire object
c) There will be no offset for the section line
d) The gap between the section lines for object is not same for the entire object
.
Answer: c
Explanation: When the three objects is placed adjacent to each other following point is to be noted
1 – Change angle of hatching for third part as 30° or 60°.
2 – Offset the lines keeping the angle as 45° or 135°.
3 – Change the gap between the lines relative to the two objects.
The angle of section lines at 45° is to be kept with reference to the axis of the object.
26. The distance between two section lines is called ________
a) length of the section line
b) width of the section line
c) thickness of the section line
d) pitch of the section line
.
Answer: d
Explanation: The distance between two section lines is pitch of the section line. There is no fixed point or distance at which the section line is draw. It is generally in between the 1 to 3 mm is depending upon the size of the object. Pitch of section lines is one of the most important topics in section lines.
27. The method which suggests the draw the section lines at equal distances is called _________
a) distance of section lines
b) drawing section lines
c) pitch of section lines
d) angle of section lines
.
Answer: b
Explanation: For better appearance, the section lines are drawn at a proper distance. The method which suggests the draw the section lines at equal distances is called drawing section lines. The section line is drawn with the help of set square and T- square and draws a section line at 45° or 135°.
28. Cutting plane is shown by _______ with thick end and two arrows in the direction view.
a) section line
b) chain line
c) single line
d) double line
.
Answer: b
Explanation: Cutting plane is shown by chain line with thick end and two arrows in the direction view. Cutting plane is named by identification letters such as A-A, X-X, Y-Y, etc. Cutting plane is that which cut the section plane at suitable angle for viewing internal dimensions.
29. In assembly half section, the section line cut the plane at an angle _________ or ________
a) 35, 45
b) 45, 125
c) 35, 135
d) 45, 135
.
Answer: d
Explanation: In assembly half section, solid area cut by the cutting plane is shown by thin section lines at 45° or 135°, if material is iron. Means the section cut the plane at an angle 45° or 135°. This angle is also used for the hatching line which is used in section planes when the two objects are adjacent.
30. If some important details are in the view it is sown by the ______ line.
a) section line
b) chain line
c) dashed line
d) double line
.
Answer: c
Explanation: If some important details are required, then dashed lines can be used. Hidden edges are generally not shown if they come in sectional view and should be avoided as far as possible. Because showing both the lines the sectional view is confusing for understanding.
31. Thin parts like stiffeners, webs, bolts, rivets, etc. are ________ if they are cut by the cutting plane along their axis.
a) not hatched
b) hatched
c) sectioned
d) not sectioned
.
Answer: a
Explanation: Thin parts like stiffeners, bolts, rivets, webs, etc. are not hatched if they are cut by the cutting plane along their axis. But it is shown by hatched if the cutting plane cuts at right angles to the axis. These parts are never shown with section lines.
32. ________ are not hatched but darkened like solids.
a) Very thin parts
b) Thin parts
c) Thick parts
d) Single part
.
Answer: a
Explanation: Very thin parts are not hatched but darkened like solids. For small parts, the gap is reduced, and for big parts, the section lines are drawn at a greater distance. For very large areas, section lines are drawn at near the boundary surface up to a certain length and central portion is left unhatched.
33. Long parts that cannot be accommodated on the drawing sheet are ____________
a) Shown continuous
b) Shown partly brake and partly continuous
c) Shown broken
d) Shown by reducing its scale
.
Answer: c
Explanation: Long parts that cannot be accommodated on the drawing sheet are shown broken with the cross section conventions. Means, the drawing which is not completely fitted within the sheet is shown by cross section conventions.
34. The crests of the thread are shown by a ______ continuous line and roots by ______ continuous line.
a) thin, thick
b) thick, thin
c) single, thin
d) double, thick
.
Answer: b
Explanation: The crests of the thread are shown by a thick continuous line and roots by thin continuous line. Because it is correct as by the appearance or viewing. Also, it is easy for understanding and details and properties of drawing.
35. The gap between crest and root lines should not be less than ______ the thickness of thick line.
a) half
b) equal
c) twice
d) thrice
.
Answer: c
Explanation: The gap between crest and root lines is kept equal to the depth of the thread. It should not be less than twice the thickness of thick line or 0.7 mm whichever is bigger. For hidden screw threads, the crests and roots are shown by dashed line.
36. Incomplete thread is hatches in assembly of external and internal thread.
a) True
b) False
.
Answer: b
Explanation: Incomplete threads are not hatches in assembly of external and internal thread; the area common to both is shown hatched at an angle of external thread. Because the not hatching sows the threads are incomplete in nature according to that view incomplete threads are not hatches in assembly of an external and internal thread.
37. Whatever material is cut by the cutting plane, should be _______
a) not hatched
b) hatched
c) empty
d) vertical
.
Answer: b
Explanation: Whatever material is cut by the cutting plane should be hatched. If material is other than iron, standard conventions for some commonly used materials are being used. Like aluminum material showing by the inclined lines and this is placed at too far distance.
38. The hatching line should be inclined at an angle ________
a) 35°
b) 25°
c) 45°
d) 55°
.
Answer: c
Explanation: The hatching lines are parallel to each other and it is normally inclined at an angle 45° or 135°.If the object is inclined to the horizontal. The hatching angle is to be measured from the objects horizontal axis and inclined at an angle 45° or 135°.
39. When two different parts are adjacent to each other, then the section line is drawn at an angle _____ and _______
a) 35° and 125°
b) 45° and 135°
c) 45° and 125°
d) 35° and 135°
.
Answer: b
Explanation: When two different parts are adjacent to each other, then the section line is drawn at an angle 45° and 135°. If one part is hatched at an angle 45° then the second object section line drawn at an angle 135° from horizontal. Due to this section line shows the two different objects. It is easy for understanding that it has two separate objects.
40. For three parts are placed in which of the case is fitted for that ___________
a) Change angle of hatching for third part as 45° or 75°
b) The gap between the section lines for object is same for the entire object
c) There will be no offset for the section line
d) The gap between the section lines for object is not same for the entire object
.
Answer: c
Explanation: When the three objects is placed adjacent to each other following point is to be noted
1 – Change angle of hatching for third part as 30° or 60°.
2 – Offset the lines keeping the angle as 45° or 135°.
3 – Change the gap between the lines relative to the two objects.
The angle of section lines at 45° is to be kept with reference to the axis of the object.
41. The distance between two section lines is called ________
a) length of the section line
b) width of the section line
c) thickness of the section line
d) pitch of the section line
.
Answer: d
Explanation: The distance between two section lines is pitch of the section line. There is no fixed point or distance at which the section line is draw. It is generally in between the 1 to 3 mm is depending upon the size of the object. Pitch of section lines is one of the most important topics in section lines.
42. The method which suggests the draw the section lines at equal distances is called _________
a) distance of section lines
b) drawing section lines
c) pitch of section lines
d) angle of section lines
.
Answer: b
Explanation: For better appearance, the section lines are drawn at a proper distance. The method which suggests the draw the section lines at equal distances is called drawing section lines. The section line is drawn with the help of set square and T- square and draws a section line at 45° or 135°.
43. The drawing in which the view is drawn at an angle 30° and 150° is called ___________
a) Auxiliary view
b) Front view
c) Isometric view
d) Perspective view
.
Answer: c
Explanation: The drawing in which the view is drawn at an angle 30° and 150° is called Isometric view. This view is same as the 3d view. It is easy to draw than the 3D view. This view is used when there is no provision for the drawing of 3D view.
44. The view in which the victory stand is drawn is known as __________
a) auxiliary view
b) 3D view
c) perspective view
d) isometric view
.
Answer: d
Explanation: The victory stand is an example of the isometric view. In which the three axes are drawn is OX, OY and OZ are at 30° and 150°and vertical to the horizontal axis. In this firstly mark the origin. OX, OY and OZ are the isometric axes.
45. All horizontal lines are in isometric drawing is _________
a) parallel to OX
b) parallel to OZ
c) parallel to OY
d) inclined to OX
.
Answer: a
Explanation: All horizontal lines are in isometric drawing is parallel to OX. All vertical lines should be drawn parallel to OZ. Join all the points by a line in the same sequence as in orthographic views. IN orthographic front view all the corners are indicated by point.
46. Angles of inclined surfaces are the actual angles in isometric views.
a) True
b) False
.
Answer: b
Explanation: Angles of inclined surfaces are not actual angles in isometric views, because the axes OX and OY are at 120° to each other. Means the angle between the OX and OY are 120°to each other. Hence angle cannot be transferred in these views.
47. The scale which is used in the isometric drawing is known as ________
a) simple scale
b) reducing scale
c) enlarged scale
d) isometric scale
.
Answer: d
Explanation: The scale which is used in the isometric drawing is known as isometric scale. Reducing scale is the scale in which the drawing size is reduced by some assumptions for better viewing. Enlargement scale is the scale which increases the dimension of size by some assumptions for better viewing.
48. The command which is used for drawing isometric grid is _____
a) XLINE
b) POLYLINE
c) DDRMODES
d) CIRCLE
.
Answer: c
Explanation: The command which is used for drawing isometric grid is DDRMODES. Isometric grid is used in drawing isometric view. In DDRMODES command type in the box of AutoCAD the dialog box is open in these various options are seen related to the isometric grid.
49. The default spacing in GRID Y is _________ mm.
a) 11
b) 21
c) 12
d) 10
.
Answer: d
Explanation: The default spacing in GRID Y is 10mm in isometric grid. It is an important feature which is used in Isometric grid. This option is shown in the grid spacing tiles which is shown in the dialog box it is created by using command DDRMODES.
50. The cursor does not change when we ON the isometric grid in Auto cad.
a) True
b) False
.
Answer: a
Explanation: The shape of the cursor change when we ON the isometric grid it is changed by the command DDRMODES in the dialog box. Press F5 key and see that changes the cursor style in auto cad. Align the cursor according to the plane in which the drawing is created.
51. The model which is created by using basic entities of two dimensioning is called __________
a) Surface model
b) Wire frame model
c) Solid model
d) Isometric model
.
Answer: b
Explanation: The model which is created by using basic entities of two dimensioning is called as wire frame model. Wire frame model is made by using two dimensional basic entities such as points, straight lines, curves, polygons, circles, etc. The model shows like a frame constructed out of wire and hence it is called a wire frame model.
52. Types of models which is commonly used are ___________
a) Simple model
b) Composite model
c) Isometric model
d) Solid model
.
Answer: d
Explanation: The types of models which are commonly used are Solid model, Surface model and wire frame model. The wire frame model are the simplest form of models which are used in drawing This model is draw with the help of two dimensional basic entities are line, rectangle, cycle, curves and polygons etc.
53. In which of the types of wire frame model is used for drawing flat objects?
a) 2D wire frame model
b) 2.5 wire frame model
c) 3D wire frame model
d) Solid model
.
Answer: a
Explanation: In 2D wire frame model the flat objects are to be drawn. 2.5 wire frame model represents three dimensional objects as long as it does not have side wall details. 3D wire frame model is used for three dimensional representations of objects with side wall details.
54. The __________ form the basis for surface models.
a) surface model
b) solid model
c) wire frame model
d) isometric model
.
Answer: b
Explanation: The wire frame models form the basis for surface models. The wire frame model is easy and simple to construct. The wire frame model requires less computer memory for storage compared to surface and solid model.
55. The wire frame entities are _________
a) Plane surface
b) Ruled surface
c) Tabulated surface
d) Polygons
.
Answer: d
Explanation: The basic wire frame model geometric entities are analytic entities and synthetic entities. The analytic entities are points, lines, arcs, circles, fillets, chamfers, and conics. The synthetic entities are various types of splines and Bezier curve.
56. The representation of complex objects which is not be drawn by wire frame model is called as ____________
a) Surface model
b) Wire frame model
c) Solid model
d) Isometric model
.
Answer: a
Explanation: The representation of complex objects such as automotive bodies, aircraft bodies, ship bodies, castings, and dies cannot be achieved by wire frame modeling. In such cases, another method of geometric modeling used is known as surface modeling.
57. The surface model is created by using ___________
a) Analytic entities
b) Synthetic entities
c) Analytic and Synthetic entities
d) Basic entities
.
Answer: c
Explanation: A surface model is generated by using wire frame entities i.e. analytic and synthetic. A system may require one wire frame entity to create a surface of revolution or it may require two wire frame entities to create a ruled surface.
58. What is the basic part of the surface model on which the surface is to be drawn?
a) Ruled
b) Ruler
c) Size
d) Mesh
.
Answer: d
Explanation: The mesh is the basic part of the surface model on which the surface is to be drawn. IN order to assist the visualization of a surface on a graphics display, artificial fairing lines, called mesh are added on the surface. The mesh size is controlled by the user.
59. The surface form used to model an aircraft body may not be sufficient to model the human heart.
a) True
b) False
.
60. The basic surface modeling entities are ____________
a) Polygons
b) Circle
c) Surface of revolution
d) Chamfers
.
Answer: c
Explanation: The basic surface model entities are ruled surface, tabulate surface, plane surface, Bezier surface, B-spline surface, coons patch, fillet surface and offset surface. The basic wire frame entities are circle, polygons and chamfers.
61. The surface which is not to be drawn by the surface model drawn by __________
a) Surface model
b) Wire frame model
c) Solid model
d) Isometric model
.
Answer: c
Explanation: The surface which is not to be drawn by the surface model drawn by solid model. The solid modeling is the easiest and the most advanced method of geometric modeling. A solid model is a completeness ad un ambiguity of the solid model are attributed to the fact that unlike the wire frame and solid model.
