This set of Engineering Drawing Multiple Choice Questions & Answers focuses on “Projection of Solids with Axes Inclined to both Horizontal and Vertical Plane”.

a) 1

b) 4

c) 2

d) 3

View Answer

Explanation: The stages are i) keeping in simple position, ii) Axis inclined to one plane and parallel to the other, iii) Final position. The 2nd and 3rd positions may be obtained either by the alteration of the positions of the solid i.e. view or reference lines.

2. The front views of 1^{st}, 2^{nd} and final stages of square prism, has its axis inclined at 45 degrees with H.P and has an edge of its base on H.P and inclined 30 degrees with V.P while drawing orthographic projections are _______________

a) Rectangle, rectangle, hexagon

b) Square, rectangle, rectangle

c) Rectangle, rectangle, octagon

d) Square, rectangle, hexagon

View Answer

Explanation: As the 1

^{st}stage is to keep the solid in simple position and given is front view it is rectangle and then rotated to an angle of 45 degrees with H.P which again gives rectangle and then rotating 30 degrees with V.P which gives an irregular hexagon.

3. The top views of 1^{st}, 2^{nd} and final stages of square prism, has its axis inclined at 45 degrees with H.P and has an edge of its base on H.P and inclined 30 degrees with V.P while drawing orthographic projections are ______________

a) Rectangle, rectangle, hexagon

b) Square, rectangle, rectangle

c) Rectangle, rectangle, octagon

d) Square, rectangle, hexagon

View Answer

Explanation: As the 1

^{st}stage is to keep the solid in simple position and given is top view it is square and then rotated to an angle of 45 degrees with H.P which gives rectangle and then rotating 30 degrees with V.P which gives again rectangle.

4. The top views of 1^{st}, 2^{nd} and final stages of regular cone, has its axis inclined at 30 degrees with H.P and 45 degrees with V.P while drawing orthographic projections are _________________

a) Circle, triangle, triangle

b) Circle, triangle with base as ellipse, triangle with base as ellipse

c) Triangle, triangle, triangle with base as ellipse

d) Triangle, triangle, triangle

View Answer

Explanation: As the 1

^{st}stage is to keep the solid in simple position and given is top view it is circle and then rotated to an angle of 30 degrees with H.P which gives triangle with base as ellipse and then rotating 45 degrees with V.P which gives again triangle with base as ellipse.

^{st}, 2

^{nd}and final stages of regular cone, has its axis inclined at 30 degrees with H.P and 45 degrees with V.P while drawing orthographic projections are __________

a) Circle, triangle, triangle

b) Circle, triangle with base as ellipse, triangle with base as ellipse

c) Triangle, triangle, triangle with base as ellipse

d) Triangle, triangle, triangle

View Answer

Explanation: As the 1

^{st}stage is to keep the solid in simple position and given is front view it is triangle and then rotated to an angle of 30 degrees with H.P which again gives triangle and then rotating 45 degrees with V.P which gives triangle with base as ellipse.

6. The front views of 1st, 2nd and final stages of a pentagonal pyramid, has one of its triangular faces in the V.P and edge of the base contained by that face makes an angle of 30 degrees with the H.P while drawing orthographic projections are _____________

a) Pentagon, irregular pentagon, irregular pentagon

b) Triangle, irregular pentagon, irregular pentagon

c) Triangle, triangle, irregular pentagon

d) Pentagon, triangle, irregular pentagon

View Answer

Explanation: As the 1

^{st}stage is to keep the solid in simple position for given conditions the solid’s base should be placed on V.P so front view gives pentagon and then rotated so as to one of the face touch the V.P now the view will become irregular pentagon and then adjust so that edge of base on V.P makes 30 degrees with H.P so it show irregular pentagon from front view.

7. The top views of 1^{st}, 2^{nd} and final stages of a pentagonal pyramid, has one of its triangular faces in the V.P and edge of the base contained by that face makes an angle of 30 degrees with the H.P while drawing orthographic projections are _____________

a) Pentagon, irregular pentagon, irregular pentagon

b) Triangle, irregular pentagon, irregular pentagon

c) Triangle, triangle, irregular pentagon

d) Pentagon, triangle, irregular pentagon

View Answer

Explanation: As the 1

^{st}stage is to keep the solid in simple position for given conditions the solid’s base should be placed on V.P so top view gives triangle and then rotated so as to one of the face touch the V.P now the view will remain triangle and then adjust so that edge of base on V.P makes 30 degrees with H.P so it show irregular pentagon from top.

8. A cube is resting on H.P on one of its corners with a solid diagonal perpendicular to the V.P. What are the front views of 1st, 2nd, 3rd stages while drawing orthographic projections?

a) Rectangle, rectangle, regular hexagon

b) Square, irregular hexagon, irregular hexagon

c) Rectangle, rectangle, irregular hexagon

d) Square, regular hexagon, regular hexagon

View Answer

Explanation: As in the 1

^{st}stage the cube is to placed in the position occurred when the diagonal of base perpendicular to V.P so front view gives rectangle and then rotated so as to keep one of the corners only on H.P so the front view will be rectangle then if we make diagonal perpendicular to V.P the front view will be regular hexagon.

a) Rectangle, rectangle, regular hexagon

b) Square, irregular hexagon, irregular hexagon

c) Rectangle, rectangle, irregular hexagon

d) Square, regular hexagon, regular hexagon

View Answer

Explanation: As in the 1

^{st}stage the cube is to be placed in the position occurred when the diagonal of base perpendicular to V.P so top view gives square and then rotated so as to keep one of the corners only on H.P so the top view will be irregular hexagon then if we make diagonal perpendicular to V.P the top view will be irregular hexagon.

10. A pentagonal prism is resting on H.P on one of its corners and from top view the solid’s axis is making 30 degrees with the xy reference line. What are the top views of the 1st, 2nd, 3rd stages of orthographic drawing?

a) Rectangle, rectangle, heptagon

b) Pentagon, heptagon, heptagon

c) Rectangle, heptagon, rectangle

d) Pentagon, rectangle, heptagon

View Answer

Explanation: As in the 1

^{st}stage the pentagonal prism is to be placed in simple position the axis perpendicular to V.P so top view gives pentagon and then rotated so as to keep one of the corners only on H.P so the top view will be irregular heptagon then adjusting the axis so as to make 30 degrees with xy reference line so top view remain same.

11. A pentagonal prism is resting on H.P on one of its corners and from top view the solid’s axis is making 30 degrees with the xy reference line. What are the front views of the 1^{st}, 2^{nd}, 3^{rd} stages of orthographic drawing?

a) Rectangle, rectangle, heptagon

b) Pentagon, heptagon, heptagon

c) Rectangle, heptagon, rectangle

d) Pentagon, rectangle, heptagon

View Answer

Explanation: As in the 1

^{st}stage the pentagonal prism is to be placed in simple position the axis perpendicular to V.P so front view gives rectangle and then rotated so as to keep one of the corners only on H.P so the front view will remain same then from projections of top view the front is drawn so a irregular heptagon will form.

12. A pentagonal pyramid is placed on H.P on one of its base’s edge and the triangular surface containing the edge on which it is resting is making 45 degrees with H.P. Draw orthographic views and what are the top views of 1^{st}, 2^{nd}, 3^{rd} stages?

a) Triangle, triangle, irregular pentagon

b) Pentagon, irregular polygon of 4 sides, irregular polygon of 4 sides

c) Triangle, triangle, irregular polygon of 4 sides

d) Pentagon, irregular pentagon, irregular pentagon

View Answer

Explanation: In the 1

^{st}stage the solid’s axis is perpendicular to H.P and one base’s edge is perpendicular to V.P. so the top view will be pentagon and then made to rest on only one edge so top view will be irregular polygon of 4 sides and then adjusted to a given angle so top view will be same.

13. A pentagonal pyramid is placed on H.P on one of its base’s edge and the triangular surface containing the edge on which it is resting is making 45 degrees with H.P. Draw orthographic views and what are the front views of 1^{st}, 2^{ndrd} stages?

a) Triangle, triangle, irregular pentagon

b) Pentagon, irregular polygon of 4 sides, irregular polygon of 4 sides

c) Triangle, triangle, irregular polygon of 4 sides

d) Pentagon, irregular pentagon, irregular pentagon

View Answer

Explanation: In the 1

^{st}stage the solid’s axis is perpendicular to H.P and one base’s edge is perpendicular to V.P. so the front view will be triangle and then made to rest on only one edge so front view will remain same and then adjusted to a given angle so front view will be pentagon.

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