# Engineering Drawing Questions and Answers – Projection of Line Inclined to one Plane and Parallel to other

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This set of Engineering Drawing Multiple Choice Questions & Answers (MCQs) focuses on “Projection of Line Inclined to one Plane and Parallel to other”.

1. A line of length 10 cm parallel to horizontal plane and inclined to vertical plane with an angle of 25 degrees. What is the length in front view?
a) 10 cm
b) 0 cm
c) 9.06 cm
d) 4.22 cm

Explanation: Here accordingly the conditions given that line is parallel to horizontal plane and inclined to vertical plane at 25 degrees the front view’s length is the cosine of actual length. 10 cm x cos (25) = 9.06 cm.

2. A line of length 5 inches parallel to horizontal plane and inclined to vertical plane with an angle of 35 degrees. What is the length in side view?
a) 7.28 inches
b) 2.86 inches
c) 4.09 inches
d) 5 inches

Explanation: Here accordingly the conditions given that line is parallel to horizontal plane and inclined to vertical plane at 35 degrees the side view’s length is the sine of actual length. 5 inches x sin (35) = 2.86 inches.

3. A line of length 0.3 m parallel to profile plane and inclined to vertical plane with an angle of 25 degrees. What is the length in side view?
a) 0.3 m
b) 0.27 m
c) 0.12 m
d) 0.15 m

Explanation: Here accordingly the conditions given that line is parallel to horizontal plane and inclined to vertical plane the side view’s length is the actual length of line but front view or top view give different lengths.
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4. A line of length 5 dm is parallel to vertical plane and inclined to horizontal plane with an angle of 55 degrees. What is the length in top view?
a) 2.86 dm
b) 4.09 dm
c) 5 dm
d) 2.5 dm

Explanation: Here accordingly the conditions given that line is parallel to vertical plane and inclined to horizontal plane at 55 degrees the top view’s length is the cosine of actual length. 5 dm x cos (55) = 2.86 dm.

5. A line of length 5 dm is parallel to vertical plane and inclined to horizontal plane with an angle of 65 degrees. What is the length in side view?
a) 2.11 dm
b) 4.53 dm
c) 5 dm
d) 0 dm

Explanation: Here accordingly the conditions given that line is parallel to vertical plane and inclined to horizontal plane at 55 degrees the top view’s length is the cosine of actual length. 5 dm x sin (65) = 4.53 dm.
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6. A line of length 15 cm is parallel to horizontal plane and 10 cm away from it and making an angle of 45 degrees with profile plane. The distance from line to xy reference line in front view will be __________
a) 15 cm
b) 10 cm
c) 7.07 cm
d) 10.06 cm

Explanation: Given line is of any length but we are asked distance from line to xy reference line in front view which is the distance from the line to horizontal plane even if the line may inclined to other planes.

7. A line of length 15 cm is parallel to horizontal plane and vertical plane and 10 cm away from vertical plane. The distance from line to vertical reference line in side view will be __________
a) 10 cm
b) 15 cm
c) 0 cm
d) 10.06 cm

Explanation: Given line is of any length but given it is parallel to horizontal plane and vertical plane and 10 cm away from the vertical plane so as the side view gives the distance from horizontal plane and vertical plane here the distance is 10 cm.

8. A line of length 12 inches is parallel to vertical plane and 5 inches away from it and ends of it is 3, 4 inches away from the profile plane. The length of line in top view will be __________
a) 1 inch
b) 3 inches
c) 7 inches
d) 5 inches

Explanation: The line which is parallel to vertical has ends which are 3, 4 inches from profile plane and asked for top view so the difference between the distances of ends to profile plane gives the length in top view 4-3=1 inches.

9. A line of length 12 inches is parallel to vertical plane and 5 inches away from it and ends of it is 3, 4 inches away from the profile plane. The length of line in top view will be __________
a) 11.61 inches
b) 11.31 inches
c) 11.95 inches
d) 30.37 inches

Explanation: Given a line of length 12 inches and parallel to vertical plane and it may be any inches away from it the top view is calculated as given here √(122-12 )= 11.95 inches. 1 is because of 4-3 inches = 1 inch.

10. A line of length 12 inches is parallel to vertical plane and 5 inches away from it and making an angle of 5 degrees with profile plane. The distance from line to xy reference line in top view will be ________inches.
a) 5 inches
b) 12 inches
c) 4.9 inches
d) 0.43 inches

Explanation: Given line is of any length but we are asked to find the distance from line to xy reference line in top view which is the distance from the line to vertical plane even if the line may inclined to other planes.

11. A line of length 12 inches is parallel to vertical plane and 5 inches away from it and ends make 6 and 7 inches from profile plane. The length of line in top view will be ________inches.
a) 11.61 inches
b) 11.31 inches
c) 11.95 inches
d) 30.37 inches

Explanation: Given a line of length 12 inches and parallel to vertical plane and it may be any inches away from it the top view is calculated as given here √(122-12 )= 11.95 inches. 1 is because of 7-6 inches = 1 inch.

12. A line of length 12 cm is parallel to profile plane and 5 cm away from it and ends make 6 and 7 cm from horizontal plane. The length of line in side view will be ________cm.
a) 5 cm
b) 12 cm
c) 11.95 cm
d) 11.31 cm

Explanation: The front view of line on or parallel to vertical plane gives the actual length. The top view of line on or parallel to horizontal plane gives the actual length. The side view of line on or parallel to the profile plane gives the actual length.

13. A line of length 25 cm is parallel to horizontal plane and 10 cm away from it and ends make 10 and 5 cm from profile plane. The length of line in front view will be ________inches.
a) 10 cm
b) 25 cm
c) 24.49 cm
d) 5 cm

Explanation: Given a line of length 25 cm and parallel to the horizontal plane and it may be any inches away from it the front view is calculated as given here √(252-52 )= 24.49 inches. 5 is because of 10-5 inches = 5 cm.

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