EXERCISES(10A) PROJECTIONS OF STRAIGHT LINES-1 SOLUTIONS (ENGINEERING DRAWING BY N.D.BHATT TEXTBOOK)
Автор: RAKESH VALASA
Загружено: 2020-11-10
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1(a). Draw the projections of a 75 mm long straight line, in the following positions.
(i) parallel to both the H.P. and the V.P. and 25 mm from each
(ii) Parallel to and 30 mm above the H.P. and in the V.P.
(iii) Parallel to and 40 mm in front of the V.P. and in the H.P.
b
i) Perpendicular to the H.P., 20 mm in front of the V.P. and its one end 15 mm above the H.P.
ii) Perpendicular to the V.P., 25 mm above the H.P. and its one end in the V.P.
iii) Perpendicular to the H.P, in the V.P. and its one end in the H.P.
c
(i) inclined at 45° to the V.P., in the H.P. and it’s one end in the V.P.
(ii) inclined at 30° to the H.P. and it’s one end 20 mm above it; parallel to and 30 mm in front of the V.P.
(iii) Inclined at 60° to the V.P. and its one end 15mm in front of it; parallel to and 25 mm above the H.P.
2. A 100 mm long line is parallel to and 40 mm above H.P. Its two ends are 25 mm and 50 mm in front of the V.P. respectively. Draw its projections and find its inclination with the V.P.
3. A 90mm long line is parallel to and 25mm in front of the V.P. Its one end is in the H.P. while the other is 50 mm above the H.P. Draw its projections and find its inclination with the HP.
4. The top view of a 75 mm long line measures 55 mm. The line is in the V.P. its one end being 25 mm above the H.P. Draw its projections.
5. The front view of a line, inclined at 30° to the V.P. is 65 mm long. Draw the projections of the line, when it is parallel to and 40 mm above the H.P., its one being 30 mm in front of the V.P.
6. A vertical line AB, 75 mm long, has its end A in the H.P. and 25 mm in front of the V.P. A line AC, 100 mm long, is in the H.P. and parallel to the V.P Draw the projections of the line joining B and C, and determine its inclination with the H.P.
7. Two pegs fixed on a wall are 4.5 meters apart. The distance between the pegs measured parallel to the floor is 3.6 meters. If one peg is 1.5 meters above the floor, find the height of the second peg and the inclination of the line joining the two pegs, with floor.
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