BE (First/Second) Semester Exam(Common to all Branches)
Time: 3 hrs
Maximum Marks: 80
Minimum Marks: 28
Time: 3 hrs
Maximum Marks: 80
Minimum Marks: 28
Note:
Attempt any five questions selecting one question from each unit. Assume suitable misprint/missing data. Draw in first angle projection unless stated otherwise. Answer the questions in drawing sheet only.
Unit-I
1. a) In a map of Bhopal, a distance of 36 km between two localities is shown by a line of 45 cm long. Calculate its R.F. and construct a plain scale to read kilometres and hectometres. Show a distance of 9.3 km on it. 8 marks
Ans: Refer problem 4.1 Page 4.4 of ED - Basant Agrawal, TMH.
1. b) A circle of 50 mm diametre rolls along a straight line without slipping. Draw the curve traced out by a point P on the circumference for one complete revolution of the circle. Name the curve also. 8 marks
Ans: Refer problem 5.5 Page 5.8 of ED - Basant Agrawal, TMH.
OR
2. a) Using the scale of chords, construct angles of 45º and 60º. 8 marks
Ans: Refer problem 6.1 Page 6.1 of ED - Basant Agrawal, TMH.
2. b) A line AB of 100 mm length is inclined at an angle 30 degree to the H.P. and parallel to V.P. The point A is 15 mm above H.P. and 20 mm in front of V.P. Draw the front view and top view of the line. 8 marks
Ans: Refer problem 9.4 Page 9.5 of ED - Basant Agrawal, TMH.
Unit-II
3. a) Draw the projection of the following points on the same ground lines, keeping the projectors 15 mm apart: (i) A in the HP and 20 mm behind VP (ii) B 25 mm below the HP and 25 mm behind VP (iii) C 15 mm above the HP and 20 mm in front of VP (iv) D 40 mm below HP and 25 mm in front of VP. 8 marks
Ans: Refer problem 9.24 Page 9.27 of ED - Basant Agrawal, TMH.
3. b) The front view of a line, inclined at 30º to the VP is 65 mm long. Draw the projections and true length of the line when it is parallel to and 40 mm above the HP and its one end being 30 mm in front of the VP. 16 marks
Ans: Refer problem 9.24 Page 9.27 of ED - Basant Agrawal, TMH.
OR
4. The projectors of the ends of a line AB are 6 mm apart. The end A is 2 cm above HP and 3 cm in front of the VP. The end B is 1 cm below HP and 4 cm behind the VP. Determine the true length and traces of AB and its inclinations with the two planes. 16 marks
Ans: Refer problem 10.7 Page 10.7 of ED - Basant Agrawal, TMH.
Ans: Refer problem 10.7 Page 10.7 of ED - Basant Agrawal, TMH.
Unit-III
5. a) A circle of 40 mm diameter is resting on HP on a point with its surface inclined at 30º to HP. Draw the projections of the circle when the top view of the diameter through the resting point makes an angle of 45º with xy. 8 marksAns: Draw only first stage of Fig 11.27 Page 11.23 of ED - Basant Agrawal, TMH.
5. b) A pentagonal pyramid of edge of base 25 mm and height 60 mm is resting on the corner of its base on HP and the slant edge containing that corner is inclined at 45º with HP. Draw the projections of the solid, when its axis makes an angle of 30º with VP. 8 marks
Ans: Refer problem 11.29 Page 11.32 of ED - Basant Agrawal, TMH.
OR
6. a) Draw the projections of a regualr hexagon of 25 mm side having one of its sides in the HP and inclined at 60º to the VP and its surface making an angle of 45º with the HP. 8 marks
Ans: Refer problem 8 Page 12.36 of ED - Basant Agrawal, TMH.
6. b) Draw the projections of a cube 20 mm long edges resting on the HP on one of its corners with a solid diagonal perpendicular to the VP. 8 marks
Ans: Refer problem 13.1 Page 13.2 of ED - Basant Agrawal, TMH.
Unit-IV
7. a) A right circular cone of base diameter 45 mm and axis 55 mm long is lying on one of its generators on HP. It is cut by a horizontal section plane paasing through the mid point of the axis. Draw the projections of the cone and its true section. 8 marks
Ans: Similar to problem 15.18 Page 15.15 of ED - Basant Agrawal, TMH.
7. b) A cylinder has been truncated by a circular surface as shown in the following fig. 1. Draw the development of surface of the cylinder. 8 marks
Ans: Refer problem 1 Page 18.44 of ED - Basant Agrawal, TMH.
Ans: Refer problem 1 Page 18.44 of ED - Basant Agrawal, TMH.
OR
8. a) Draw the isometric view of the block shown in Fig. 2. 8 marks
Ans: Refer problem 1 Page 18.44 of ED - Basant Agrawal, TMH.
Ans: Refer problem 1 Page 18.44 of ED - Basant Agrawal, TMH.
8. b) A hexagonal pyramid base 30 mm side and axis 65 mm long is resting on its base on the HP with two edges parallel to the VP. It is cut by a section plane perpendicular to the VP and inclined at 45º to the HP. and intersecting the axis at a point 25 mm above the base. Draw front view and sectional top view of the section. 8 marks
Ans: Refer problem 1 Page 18.44 of ED - Basant Agrawal, TMH.
Ans: Refer problem 1 Page 18.44 of ED - Basant Agrawal, TMH.
Unit-V
9. a) What is CAD. State the advantages of CAD. 6 marks
Ans: Refer problem 1 Page 18.44 of ED - Basant Agrawal, TMH.
Ans: Refer problem 1 Page 18.44 of ED - Basant Agrawal, TMH.
9. b) Explain any two methods of drawing a circle in AutoCAD. 5 marks
Ans: Refer problem 1 Page 18.44 of ED - Basant Agrawal, TMH.
9. c) Name five edit commands used in CAD. 5 marks
Ans: Refer section 18.16 Page 18.26 of ED - Basant Agrawal, TMH.
OR
10. a) Name various methods of locating a point in CAD and explain ant to of them. 6 marks
Ans: Refer section 18.3 Page 18.1 of ED - Basant Agrawal, TMH.
10. b) Fill in the blanks: 5 marks
(i) Computer is an ___ device with ___ brain.
(ii) ROM stands for ___.
(iii) ___ are those commands which can tell the basic functions of AutoCAD.
(iv) ___ is a bright dot on the screen.
(v) Commercial Computer Aided Drafting was introduced in 1964 by ___.
10. c) State whether the statement is true or false: 5 marks
(i) Machine language has only two words "True or false".
(ii) Once the computer is switched off, ROM forgets evergything.
(iii) The utility commands control the basic functions of AutoCAD.
(iv) ERASE and UNDO are Edit Commands.
(v) Hatch command is used in drawing sectional view of an object.
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