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Different types of planes are:
1. Reference plane: In general, two planes are employed for projection and are known as reference planes or principal planes of projection. These planes intersect at a right angle to each other.
2. Vertical plane (V.P.): The plane which is vertical is called a vertical plane and is denoted by V.P. Vertical plane is also known as frontal plane since the front view is projected on this plane.
3. Horizontal plane (H.P.): The plane which is horizontal but at a right angle to the VP. is called the horizontal plane.
4. Auxiliary plane (A.P.): Any other plane, placed at any angles to the principal planes, is called an auxiliary plane.
5. Profile plane (P.P.): The plane which is at right angles to the two principal planes is called auxiliary vertical plane (A.V.P.) or profile plane (P.P.).
Types of views are
1. The front view is the view of the object obtained on the V.P. by drawing projectors perpendicular to V.P. from the various corners of the object.
2. The top view is the view of the object obtained on the H.P. by drawing projectors perpendicular to H.P. from the various corners of the object.
3. The side view is the view of the object obtained on the P.P. by drawing projectors perpendicular to P.P. from the various corners of the object.
So when an object is cut by a section plane parallel to H.P and perpendicular to V.P, then the sectional view of the object is obtained in top view.
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1) Section plane is used to show____a) visible features of solidb) invisible features of solidc) geometry of solid
d) geometry of visible features
b) invisible features of solid
2) Imaginary cutting plane is called as____a) cutting bladeb) invisible features of solidc) section plane
d) auxiliary plane
3) Section is indicated by____a) equispaced thick line inclined at 45 degreeb) equispaced dotted line inclined at 30 degreec) equispaced thin inclined at 45 degree
d) equispaced thin inclined at 30 degree
c) equispaced thin inclined at 45 degree
4) Generally, section planes are _________to one of the reference planes and either perpendicular, parallel, or inclined to the other plane.a) inclinedb) parallel
c) perpendicular
d) cannot say
5) Generally, section planes are _________to one of the reference planes and either perpendicular, parallel, or inclined to the other plane.a) inclinedb) parallel
c) perpendicular
d) cannot say
6) Auxiliary plane parallel to the section plane is used to draw_____ a) apparent shape of the sectionb) true shape of the section
c) edge view of the section
d) none of the above
b) true shape of the section
7) When the projection of the section plane appears as a straight line in VP, it is______a) parallel to HPb) perpendicular to HP
c) parallel to VP
d) perpendicular to VP
8) The projection of the section on a reference plane parallel to the section plane will show the _____a) apparent shape of the sectionb) true shape of the section.
c) straight line
d) curved line
b) true shape of the section.
9) The cone resting on its base on HP is cut by a section plane parallel to HP, projection of section on HP will be _____a) triangleb) straight line
c) trapezoid
d) circle
10) Pentagonal prism resting on its base on HP cut by a section plane which is perpendicular VP and inclined to HP, projection of section on VP will be _____a) rectangleb) pentagon
c) inclined line
d) horizontal line.
11) When solid is cut by section plane perpendicular to vertical plane and inclined to the horizontal plane, the true shape of the section will appear in _____a) front viewb) top view
c) side view
d) none of the above
12) When the section is projected on the auxiliary plane which is parallel to the section plane, we get______a) apparent shape of the sectionb) true shape of the section
c) true shape of solid
d) straight line
13) When the section plane is inclined to HP, ______ is used to get the true shapea) auxiliary plane perpendicular to the section planeb) auxiliary plane parallel to the section plane
c) auxiliary plane parallel to HP
d) auxiliary plane parallel to VP
b) auxiliary plane parallel to section plane
14) When the section plane is perpendicular to both the reference planes, the true shape of the section will be seen in____a) horizontal planeb) vertical plane
c) profile plane
d) auxiliary plane
15) When the section plane is parallel to the horizontal plane, the projection of the section will be seen in ____ as a line.a) Front viewb) vertical plane
c) profile plane
d) None of the above
16) When section plane perpendicular to VP and inclined to HP cut all the edges of square prism, projection of section in HP will be____a) squareb) rectanglec) inclined line
d) horizontal line
17) When the section plane perpendicular to VP and inclined to HP cuts all generators of the cone, the true shape of the section will be___a) ellipseb) parabolac) hyperbola
d) circle
18) When the section plane perpendicular to VP and inclined to HP cuts all generators of the cylinder, the apparent shape of the section in HP will be___a) ellipseb) parabolac) hyperbola
d) circle
19) Which of the following positions of section plane is not possiblea) perpendicular to HP and parallel to VPb) perpendicular to VP and parallel to HPc) perpendicular to HP and perpendicular to VP
d) parallel to HP and parallel to VP
d) parallel to HP and parallel to VP
20) When the cylinder resting on its base on HP is cut by a section plane perpendicular to HP passing through its axis, the true shape of the section will be__a) vertical lineb) horizontal linec) circle
d) rectangle