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

December 2008 ques. Paper with Model ans
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
Ans: issue 4.11 with data of issue 4.1, ED - Basant Agrawal, TMH.
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
Ans: issue four Page 5.33, ED - Basant Agrawal, TMH.
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
Ans: issue 24 Page 4.25 of ED - Basant Agrawal, TMH.
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
Ans: Archemedian spiral has to be drawn for 1 convolution having shortest and greatest radii 20 mm and 60 mm respectively. Also draw tangent and normal to the curve. Refer issue 6.6 Page 6.6, ED - Basant Agrawal, TMH.

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
Ans: Similar to issue 15 Page 9.47, ED - Basant Agrawal, TMH.
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
Ans: issue 14 Page 10.13 of ED - Basant Agrawal, TMH.
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

Earning:   Approval pending.