ME119 2019-1 Practice for Sheet 1 Projections of lines - orthographic PDF

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INDIAN INSTITUTE OF TECHNOLOGY, BOMBAY Department of Mechanical Engineering ME 119 Engineering Drawing & Graphics 2018-19 Semester 2 Sheet 2: Projections of points, lines and Orthographic projections Instructions:  Practice all problems in your rough book before coming to the Drawing Session.  Scale, dimension the drawings suitably. Label the important points/nodes on the drawing.  All problems carry equal weightage.  4 problems from this sheet will be randomly picked for you to practise in the drawing Session. Projections of Points, lines Q1: Two lines PQ and PR makes an angle of 120 degrees between them in their front view and top view. PQ is parallel to both HP and VP. Determine the true angle between PQ and PR. Q2: A line PQ, 100mm long, is inclined at 30° to H.P. and at 45° to V.P. Its mid-point is in V.P. and 20mm above the H.P. P is in 3rd quadrant and Q is in 1st quadrant. Draw its projections. Q3: Point A is 30 mm above HP and 20 mm behind VP, while point Q is 40 mm below HP and 30 mm in front of VP. The distance between the end-projectors of a line AB is 60 mm. Draw the projections of the line and determine the true length and true inclinations of line with HP and VP. Q4. Line AB 100 mm long is inclined 30 degrees and 45 degrees to HP and VP respectively. Point A is 10 mm above HP and its VT is 20 mm below HP. Draw the projections of the line. Q5: Point A is 25 mm behind the VP and 30 mm below the HP, while another point B is 40 mm above HP and 15 mm in front of VP. The projectors of point A and B are at a distance of 70 mm. Find the third point C which is in front of VP and lies in the HP such that its distance front A and point B is 90 mm and 60 mm, respectively. Q6: The front view of the line AB measures 70 mm and makes an angle of 45 degrees with XY. A is in the H.P and the V.T of the line is 15mm below the H.P. The line is inclined at 30 deg. to the V.P. Draw the projections of AB, and find its true length, inclination with the H.P and its H.T. Q7: The distance between the end projectors of a line PQ are 60 mm apart, while the projectors passing from the Horizontal trace (H.T) and vertical trace (V.T) is 90 mm apart. The H.T is 35 mm behind the V.P and the V.T is 55 mm below the H.P. The point P is 7 mm behind the V.P. Find the true length of line and true inclination angles with the H.P and V.P. Q8. The projectors drawn from the H.T. and the V.T. of a straight are 80 mm apart while those from its ends are 50 mm apart. The H.T. is 35 mm in from of V.P., the V.T. is 55 mm above the H.P. and the end A is 10 mm above the H.P. Draw the projections of AB and determine its true length and inclinations with the reference planes.

Q9: End A of a line AB lies in the HP and is 25 mm behind the VP. The other end B is in VP and is 50 mm above the HP. The distance between the projectors is 70 mm. Draw the projections of this line AB and find its true inclination with HT and VT. Q10: End A of a line AB lies is 25 mm below HP and 35 mm behind VP. The line is 35 degree inclined to HP. There is point P on AB which lies both in HP and VP. Draw the projections of this line AB and find the inclination with VP and find the traces HT and VT. Orthographic projection: Q11. Using First angle projection, draw the front and top view of the following object. Q12. Using Third angle projection, draw the front and right side view of the following object.

Q13. Using First angle projection, draw the front, right and top view of the following object. Q14. Using third angle projection, draw the front, left and top view of the following object....