# Projection of line and planes, Past Exams for Engineering Drawing and Graphics

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ME2I/EDR/UNIT1/LECT1

Unit 1- Projection of straight line and plane

Line : the shortest distance between two points.

Position of straight line:

1. Line parallel to V. P. and H. P.

2. Line parallel to V. P. and inclined to H. P.

ME2I/EDR/UNIT1/LECT2

3. Line parallel to H. P. and inclined to V. P.

4. Line inclined to H. P. and V. P. both.

ME2I/EDR/UNIT1/LECT3

ME2I/EDR/UNIT1/LECT4

EX. A line PQ, 9 cm long is 20 mm above HP and makes an angle of 30° with VP. Its end is 2.5 cm in front of VP. Draw its projection.

h = 20mm, d = 25mm, Ө = 30°

…………………………………………………………………………………………………… ………………………………….

EX. A line PQ, 8 cm long is 20 mm above HP and makes an angle of 40° with VP. Its end is 2.5 cm in front of VP. Draw its projection.

ME2I/EDR/UNIT1/LECT5

Ex. A line 50mm long is inclined at 45° to the VP and parallel to HP. The nearest end line is parallel to HP. The nearest end line is 25mm of VP. Draw Projection.

…………………………………………………………………………………………………… …………………………………

A line 80mm long is inclined at 35° to the VP and parallel to HP. The nearest end line is parallel to HP. The nearest end line is 25mm of VP. Draw Projection.

ME2I/EDR/UNIT1/LECT6

Ex. A line 55mm long is inclined at 45° to the VP and 30° to HP. The nearest end line is 15mm above to HP and 12mm in front of VP. The nearest end line is 25mm of VP. Draw Projection.

…………………………………………………………………………………………………… ………………………………….

Ex. A line 60 mm long is inclined at 35° to the VP and 40° to HP. The nearest end line is 15mm above to HP and 12mm in front of VP. The nearest end line is 25mm of VP. Draw Projection.

ME2I/EDR/UNIT1/LECT7

• Projection of planes:

Plane: any surface having negligible thickness is called planes.

Plane perpendicular to HP and VP.

ME2I/EDR/UNIT1/LECT8

Plane inclined to HP and Perpendicular to VP.

Plane perpendicular to Hp and inclined to VP

ME2I/EDR/UNIT1/LECT10

Plane inclined to both HP and VP

ME2I/EDR/UNIT1/LECT11

Ex. Draw a projection of a regular pentagon of 25mm side, having surface inclined to 30° to HP and a side parallel to the HP and inclined at an angle of 60° to the VP.

…………………………………………………………………………………………………… ………………………………….

Draw a projection of a regular pentagon of 40 mm side, having surface inclined to 40° to HP and a side parallel to the HP and inclined at an angle of 45° to the VP.

ME2I/EDR/UNIT1/LECT12

Ex. A rectangle (50 mm * 20 mm) plate of negligible thickness has its surface inclined at 60° to HP and one of its smaller side is inclined at 30° to VP. Draw its projections.

…………………………………………………………………………………………………… …………………………………. A rectangle (40 mm * 30 mm) plate of negligible thickness has its surface inclined at 45° to HP and one of its smaller side is inclined at 45° to VP. Draw its projections