Rajiv Gandhi Proudyogiki Vishwavidyalaya 2008 B.E (first/second) semester - Question Paper

Ans: issue 12 Page 9.58, ED - Basant Agrawal, TMH.
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
Ans: issue 24 Page 10.14 of ED - Basant Agrawal, TMH.

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
Ans:
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
Ans:
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
Ans: issue 11.38 Page 11.39, ED - Basant Agrawal, TMH, and thereafter proceed with parts of solids.

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
Ans:
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
Ans:
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
Ans: issue three Page 13.36 of ED - Basant Agrawal, TMH.
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
Ans:

Unit-V
9. a) explain salient features of CAD. four marks
Ans: Refer Page 18.1 of ED - Basant Agrawal, TMH.
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
Ans: issue 22 Page 18.45, ED - Basant Agrawal, TMH.
9. c) discuss any 4 methods of drawing an arc in AutoCAD. eight marks
Ans: issue 19 Page 18.44, ED - Basant Agrawal, TMH.
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
Ans: issue 11 Page 18.44, ED - Basant Agrawal, TMH.
9. 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
Ans: issue 19 Page 18.44, ED - Basant Agrawal, TMH.

Earning:   Approval pending.