DEPT OF MECHANICAL ENGINEERING, AWHEC, CALICUT







ENGINEERING GRAPHICS ASSIGN - 3


3   Lines inclined to both plane


3.1  The top view of a line PQ makes an angle of 30 with the horizontal and has a length of 100 mm. The end Q is in the HP and P is in the VP and 65 mm above the HP. Draw the projections of the line and find its true length and true inclinations with the reference planes. Also show its traces

3.2  A straight line ST has its end S 10 mm. In front of the VP and nearer to it. The mid-point m of the line is 50 mm in front of the VP and 40 mm. above the HP. The front and top views measure 90 mm and 120 mm. respectively. Draw the projections of the line. Also find its true length and inclinations with the HP and the VP.


3.3  A line MN inclined at 40° to VP has its end 50 mm. and 20 mm. above HP. The length of its front view is 70 mm. and its VT is 10 mm. above HP. Find its true length, true inclination with HP and locates the traces

3.4  A line RS of length 120 mm  has its end R 50 mm in front of VP. The HT of the line is 40 mm. In front of VP and the VT is 48 mm. above the HP. If the distance between HT and VT is 100 mm. Draw the projections of the line.

3.5  The ends P, Q and R of three rods are resting on the ground. The other ends meet at 0, 60 mm above the ground. The top view of the assembly consists of three lines of length 50 mm, 40 mm and 30 mm. The 50 mm line makes 30 with the horizontal. Angle between 50 mm and 30 mm line is 100. The 40 mm line is further displaced by 120 from 30 mm line. Draw the projection of assembly and find its true length and true inclination of each rod with ground

3.6  A line PQ has its end P 10 mm. above the HP and 20 mm in front of VP. The end Q is 35 mm in front of the VP. The front view of the line measures 75 mm. The distance between the end projectors is 50 mm. Draw the projections of the line and find its true length and its time inclination with the VP and HP

(Question 3.5 and 3.6 are for home work)