Rajiv Gandhi Proudyogiki Vishwavidyalaya 2008 B.E Engineering Graphics - Question Paper

December 2008 ques. Paper
BE (First/Second) Semester examination
(Common to all Branches)
Time: three hrs
Maximum Marks: 100
Minimum Marks: 35
Note: (i) ans 1 ques. from every unit.
(ii) presume misprint/missing data suitably.
(iii) Draw in 1st angle projection unless otherwise specified.
(iv) Due credits will be provided for neatness, quality of lines and lettering.
Unit-I
1. a) A map is to be drawn with RF 1:40. Construct a scale to learn metres, decimeters and centimeters and long enough to measure upto six m. Show on it a distance of 3.84 m. eight marks
1. b) A point moves in a plane in such a way that the sum of its distances from 2 fixed points 60 mm apart is 90 mm. Name and draw the locus of this point around the fixed points. eight marks

OR
2. a) A cube of five cm side represents a tank of 8000 cubic metre quantity. obtain the RF and construct a scale to measure upto 60 m and mark on it a distance of 47 m. Indicate RF of the scale. eight marks
2. b) A point moves along a bar at an uniform speed. The bar rotates about its end O at an uniform speed. Name and construct the path of a point P starting from a position 20 mm away and move upto 60 mm away from the fixed end of bar during its 1 revolution. Draw tangent at a point 45 mm away from O. eight marks
Unit-II
3. a) A line AB inclined at 40º to HP has its front view 60 mm long and inclined at 60º to the reference line. 1 end is 20 mm away from both the reference planes in 1st quadrant. Locate the position of end B. obtain actual length and actual inclination of the line with VP. Also show its traces. eight marks
3. b) A pentagonal lamina of 30 mm side rests on HP on 1 of its corners with its surface perpendicular to VP and inclined at 30º to HP. Draw its projections when the side opposite to the corner in HP is parallel to VP. eight marks
OR
4. a) The front view of a 75 mm long straight line AB measures 45 mm, while its top view measures 60 mm. Its end A lies 15 mm beneath HP and 20 mm behind VP, while the other end lies in 1st quadrant. Draw the projections of AB and find actual inclinations of AB with the reference planes. eight marks
4. b) The top view of a lamina whose surface is perpendicular to VP and inclined at an angle of 45º to HP appears as a regular hexagon of 30 mm side, having a side parallel to the reference line. Draw the projections of plane and find its actual shape. eight marks
Unit-III
5. a) A square prism of base side 25 mm and height 60 mm, is kept on HP with its axis vertical and 2 base sides equally inclined to VP. It is cut by a part plane whose VT makes an angle of 30º with the reference line bisects the axis. Draw sectional top view and actual shape of part. eight marks
5. b) A right regular pyramid of base side 25 mm and height 70 mm has a base edge in HP and slant edge in VP. Draw projections of the pyramid. Also draw a different top view on an auxiliary plane inclined at 30º to HP. eight marks
OR
6. A right regular hexagonal pyramid of base 30 mm side and axis 75 mm long has 1 of its slant edges in the HP and the vertical plane containing this edge and axis is inclined at 30º to the VP. Draw the projection when apex is 20 mm in front of VP.
It is now cut by a part plane whose HT makes an angle of 60º with the reference line. Draw sectional view and actual shape of part when the part plane bisects the axis. eight marks
Unit-IV
7. a) The isometric view of an object is shown in Fig. 1. Draw its 3 views looking from the directions shown. eight marks
OR
7. a) Draw isometric projection of a spherical ball of 40 mm diameter resting centrally on the top of a pentagonal disc of base side 30 mm and height 50 mm. eight marks
7. b) Develop the lateral surface of a right regular hexagonal prism of base 35 mm side and height 75 mm, kept vertically with a base side perpendicular to VP and having a cylindrical hole of 40 mm diameter drilled centrally with the axis of hole being perpendicular to VP. eight marks
OR
8. A vertical circular pipe of 60 mm diameter has a branch of 40 mm diameter at right angles with their axes in the identical plane, which is parallel to the reference VP. Draw the curve of intersection. Also develop the surface of 2 pipes in the region of intersection. 16 marks
Unit-V
9. a) explain salient features of CAD. four marks
9. b) State the series of AutoCAD command steps to draw a rectangle of size 100 mm × 60 mm with the help of line commands. four marks
9. c) discuss any 4 methods of drawing an arc in AutoCAD. eight marks
OR
10. Fill in the blanks: four marks
a) The command used to make a mirror copy of the opted object is named as mirror.
b) The movement of pick box and cross hairs is guided by the mouse.
c) Limits command creates an artificial and invisible boundary for the drawing.
d) The standard tool bar contains commonly used draw and edit.
10. b) Name different methods of locating a point in CAD and discuss any 1 of them. six marks
10. c) State the series of command steps needed to reproduce the object shown in fig. 2. with the help of line command using rectangular coordinate system. six marks

Earning:   Approval pending.